Showing posts with label Infrastructure Antennas. Show all posts
Showing posts with label Infrastructure Antennas. Show all posts

Tuesday, 14 July 2026

Inside a Cellular Base Station Antenna

Most people will have seen the familiar white rectangular antenna panels mounted on telecom towers, rooftops and other structures. They are a visible part of the mobile network, but what is actually inside one of these panels is rarely seen.

In a recent Wireless Future video, Prof. Emil Björnson carries out a teardown of a cellular base station antenna that was discovered in a box when his research division moved offices. The antenna operates in the 3.5 GHz band, which is widely associated with 5G deployments, but it is important to understand that this is not specifically a ‘5G antenna’.

It is a passive sector antenna. It can be used with either 4G or 5G, depending on the radio signal connected to it.

The antenna is designed to cover a 60-degree sector and would be installed vertically using mounting points at the top and bottom. A conventional macro site may use multiple sector antennas pointing in different directions to provide coverage around the site.

At the bottom of the antenna is a radio frequency connector through which the transmitted and received signals pass. The antenna does not create or process the radio signal itself. The signal is generated by an external radio unit and carried to the antenna through a feeder cable.

There is also a small drain hole at the bottom of the enclosure. Although antenna panels are designed to operate outdoors, condensation or small amounts of water may still enter the enclosure. The drain allows this moisture to escape rather than accumulating inside.

After removing the enclosure, the internal antenna structure becomes visible. The antenna contains eight radiating elements arranged vertically. Each of these elements is a dipole antenna.

The radio signal enters through the connector and is distributed through a feed network to all eight elements. The elements transmit the same signal coherently. Their individual radio waves combine through constructive interference to produce a stronger and more directional radiation pattern.

The physical dimensions of the antenna are closely related to the wavelength of the radio signal. At around 3.5 GHz, one wavelength is approximately 8.5 centimetres. Each dipole is therefore around half a wavelength long, or approximately four centimetres.

Behind the dipoles is a metal reflector positioned approximately a quarter of a wavelength away, which is around two centimetres at this frequency. The reflector reduces radiation behind the antenna and helps direct more of the energy forwards.

Metal structures along the sides of the antenna further shape the horizontal radiation pattern, limiting the main coverage area to approximately 60 degrees. Instead of transmitting energy equally in every direction, the antenna concentrates it towards the geographical area that the sector is intended to serve.

The eight dipole elements are separated vertically by approximately eight centimetres, which is roughly one wavelength. Arranging the elements in a vertical column produces a narrow beam in the vertical, or elevation, plane.

This is useful because a base station normally needs to transmit signals across the surrounding area rather than towards the sky or directly into the ground. The horizontal beam provides coverage across the 60-degree sector, while the narrow vertical beam concentrates the radio energy towards users within the intended coverage area.

According to the antenna specifications shown in the video, it has a gain of 17.5 dBi. This corresponds to a peak power density roughly 56 times greater than that of an ideal isotropic antenna transmitting the same total power.

The antenna is not amplifying or creating additional power. Antenna gain is achieved by concentrating the available radio energy in particular directions while reducing the energy transmitted in others. This improves coverage and signal strength within the sector.

The maximum input power shown in the specifications is 150 watts. The data sheet also includes horizontal and vertical radiation patterns, mounting instructions and information about wind loading. These mechanical considerations are important because antennas must remain safely mounted and correctly aligned while exposed to wind, rain and changing temperatures.

The antenna was manufactured by the Italian company Sira Sistemi Radio. Its relatively simple internal construction demonstrates how passive base station antennas have traditionally worked. One radio signal is distributed across several antenna elements to create a fixed directional radiation pattern.

The same antenna could carry a 4G or 5G signal because the antenna itself does not understand the mobile technology being used. Provided that the radio frequency falls within its supported operating range, it simply converts electrical RF signals into electromagnetic waves and performs the reverse process when receiving signals.

This is different from many modern 5G Massive MIMO antenna systems.

In the passive antenna shown in the video, the eight radiating elements collectively behave as one large directional antenna. They receive the same input signal and produce a largely fixed beam.

An active Massive MIMO antenna has many individually controlled antenna elements or subarrays, together with multiple radio frequency chains. By adjusting the phase and amplitude of the signals supplied to different elements, the system can electronically form and steer beams, serve several users simultaneously and adapt the radiation pattern as network conditions change.

Modern active antenna units may also integrate the radio electronics into the antenna enclosure. This reduces feeder losses and allows closer coordination between the radio and antenna functions, although it also makes the equipment more complex than the passive panel examined in the teardown.

The video provides a useful reminder that an antenna is not simply an empty white box. Its dimensions, element spacing, reflector, feed network and surrounding metal structures all contribute to how radio energy is transmitted into the coverage area.

It also illustrates the progression of cellular infrastructure. Traditional passive sector antennas use carefully designed physical structures to create a fixed coverage pattern. Modern active antenna systems build on the same electromagnetic principles but add multiple radios, digital signal processing and dynamic beamforming.

The complete teardown and explanation from Prof. Emil Björnson can be viewed in the video below.

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Tuesday, 2 June 2026

MatSing Brings Lens Antenna Innovation to High-Density Wi-Fi Networks

As wireless connectivity demands continue to grow in stadiums, arenas and large public venues, network designers face an increasingly difficult balancing act. Fans expect seamless access to video streaming, social media, mobile ticketing, digital payments and a growing range of digital services, yet delivering the required capacity often means deploying hundreds or even thousands of antennas and access points throughout a venue. At MWC Barcelona 2026, MatSing unveiled a new approach to this challenge with the introduction of its MS-16.16W45 Wi-Fi 6E lens antenna.

MatSing is already well known within the wireless industry for its distinctive spherical lens antennas that have been deployed in major sports and entertainment venues around the world. Unlike conventional antenna designs that rely on reflection or electronic beam steering, MatSing's patented RF lens technology uses refraction to focus and direct radio signals. The concept is often compared to the way an optical lens focuses light, allowing multiple highly focused beams to be generated from a single antenna structure.

According to the company, the new MS-16.16W45 supports 16 independent beams and 4x4 MIMO operation across the Wi-Fi 6E spectrum from 5.125 GHz to 7.125 GHz. It is designed to provide coverage for thousands of simultaneous users from a single mounting location, reducing the amount of infrastructure required while simplifying deployment and maintenance.

What makes this announcement particularly interesting is that it applies a proven cellular deployment model to Wi-Fi networks. Over the past decade, MatSing's lens antennas have been used to address capacity challenges in large venues and outdoor events where traditional antenna architectures can struggle to scale efficiently. One of the company's early successes came at the Coachella music festival, where extremely high user density and heavy data usage created significant connectivity challenges. By using its lens antenna technology, MatSing was able to create dozens of sectors from a single installation point, providing the capacity required to support large numbers of connected users.

The same principle is now being applied to Wi-Fi. Large venues often require extensive Wi-Fi infrastructure, with antennas and access points distributed throughout seating areas, concourses and hospitality spaces. While this approach can deliver the required coverage and capacity, it also increases complexity, installation costs and ongoing maintenance requirements. MatSing argues that a small number of centralised lens antennas can create multiple high-capacity sectors while reducing antenna clutter and simplifying the overall network architecture.

Another interesting aspect of the technology is its ability to support multiple frequency bands and deployment scenarios. The company's lens antenna portfolio already supports cellular technologies including LTE, 5G and C-band deployments. The addition of a dedicated Wi-Fi 6E solution reflects the increasingly converged nature of venue connectivity, where cellular and Wi-Fi networks work together to provide a seamless user experience.

The announcement also highlights an area of wireless innovation that often receives less attention than advances in software, artificial intelligence and radio algorithms. Much of the industry's recent focus has been on improving network intelligence and optimisation, while the physical infrastructure used to focus and distribute radio signals has changed relatively little. MatSing's approach demonstrates that significant gains can still be achieved through innovation at the antenna level, particularly in environments where capacity and coverage requirements continue to grow year after year.

As venues prepare for increasingly connected fan experiences and the transition towards Wi-Fi 7 and future wireless technologies, infrastructure efficiency will become even more important. Whether MatSing's Wi-Fi lens antenna achieves the same level of success as its cellular counterparts remains to be seen, but its debut at MWC Barcelona 2026 offers an interesting glimpse into how high-density wireless networks may evolve in the years ahead.

Here is a good video from RCRTech's Principal Analyst, Sean Kinney, talking to Leo Matytsine, EVP and Cofounder of MatSing at MWC Barcelona 2026:

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Tuesday, 7 April 2026

Huawei’s PanoAAU Aims to Change the Economics of 5G Coverage

As 5G networks continue to expand beyond dense urban centres, the industry has been forced to confront a difficult reality. Traditional deployment models, built around three-sector sites and relatively narrow beam coverage, do not translate well into rural and semi-rural environments. Lower population density, larger coverage areas and tighter budgets mean that operators need to extract far more value from each site.

Huawei’s PanoAAU is one attempt to address this challenge. While it has been in the market for some time, publicly available technical detail remains limited. However, by piecing together information from different announcements and deployments, a clearer picture begins to emerge of what the solution is trying to achieve and why it matters.

At its core, PanoAAU is an evolution of the active antenna unit, designed to extend coverage both horizontally and vertically. The most notable shift is the move from the conventional 120 degree sector to a 180 degree wide-angle coverage. This is enabled through extremely large antenna array technology combined with beamforming and what Huawei describes as a wide-angle beam management approach. The practical implication is that a traditional three-sector site could, in some scenarios, be replaced with a two-sector configuration while still maintaining, or even improving, coverage.

This change is not just about radio performance. It has direct implications for site economics. Reducing the number of sectors means fewer radio units, less equipment on the tower, lower power consumption and potentially reduced site rental costs. In rural deployments, where return on investment is often marginal, these savings can be significant enough to make previously unviable sites commercially feasible.

The antenna design itself appears to rely on a combination of lightweight materials, low-loss feeding structures and metamaterial-based elements. These are intended to address the physical challenges that come with larger antenna arrays, particularly weight and signal loss. The use of such materials is consistent with a broader trend in radio design, where advanced materials are being used to push beyond traditional performance limits without making deployments impractical.

Software plays an equally important role. Wide-angle coverage introduces complexity in beam management, especially when trying to maintain capacity and user experience across a broader footprint. The solution therefore depends heavily on more precise and responsive beamforming algorithms to ensure that users are still served efficiently, even as the coverage area expands. This is particularly relevant for uplink performance, which is becoming increasingly important as networks evolve towards AI-driven applications and more interactive services.

PanoAAU also sits within a wider portfolio of radio solutions that Huawei has been promoting in the context of 5G-Advanced and what it refers to as 5.5G. Alongside products such as MetaAAU and EasyAAU, it reflects a move towards more specialised radio units tailored for different deployment scenarios. In this context, PanoAAU is positioned as a coverage-focused solution, particularly suited to suburban, rural and geographically complex environments.

Early deployments outside China provide some useful context. In Zambia, for example, MTN has worked with Huawei on dual-band active antenna solutions that are part of the same broader radio evolution. These deployments highlight a similar set of challenges, including limited tower space, the need to support both 4G and 5G, and the pressure to reduce both capital and operational expenditure. Solutions that integrate multiple bands and simplify installation are particularly attractive in such markets, where infrastructure constraints are often more pronounced.

There are also indications that the concept extends beyond traditional ground-level coverage. The emphasis on vertical reach suggests potential applications in high-rise urban environments and, increasingly, in low-altitude connectivity scenarios. This is where the discussion begins to overlap with one of the more interesting developments in 5G-Advanced, namely the integration of sensing capabilities into the network.

Recent trials in China have demonstrated how 5G-Advanced base stations can go beyond communication to provide radar-like sensing. Using integrated sensing techniques, networks are able to detect, track and monitor low-altitude objects such as drones in real time. Tests have shown that even very small objects can be identified with high accuracy, with the network able to determine position, speed and trajectory without relying on external systems such as GPS. This creates the possibility of electronic fencing, intrusion detection and broader airspace monitoring using the existing mobile infrastructure.

While this capability is not specific to PanoAAU, the underlying requirement is clear. Wider and more flexible coverage, including improved vertical reach, becomes increasingly important when networks are expected to support both communication and sensing functions. In that sense, technologies like PanoAAU can be seen as part of the enabling layer for these emerging use cases, particularly in scenarios where coverage continuity is critical.

Deployments in markets such as China and trials in other regions suggest that the solution is not purely theoretical. Operators have reportedly used it to reduce the number of required sites or sectors while maintaining service levels. In some cases, it has also been associated with lower energy consumption, aligning with the broader industry push towards greener network infrastructure.

The link to energy efficiency is particularly important. By integrating multiple capabilities into fewer units and enabling both 4G and 5G operation within the same hardware, solutions like PanoAAU can reduce overall network power consumption. This is increasingly becoming a key metric for operators, not just from a sustainability perspective but also in terms of operational expenditure.

It is also worth noting that PanoAAU is part of a broader shift in how radio access networks are being designed. The traditional approach of uniform site design is giving way to a more modular and scenario-driven strategy. Different environments require different solutions, and vendors are responding with increasingly diverse portfolios of radio units. In that sense, PanoAAU is less about a single product and more about a design philosophy focused on flexibility and efficiency.

That said, there are still open questions. Much of the available information comes from vendor-led announcements, with limited independent performance data. The real-world gains in coverage, capacity and cost savings will depend heavily on deployment conditions, spectrum availability and integration with existing networks. As with many new radio innovations, the benefits are likely to vary significantly from one market to another.

Even so, the underlying idea is difficult to ignore. If operators can meaningfully reduce the number of sectors or sites required for wide-area coverage without compromising user experience, it could have a lasting impact on how 5G networks are rolled out, particularly in underserved regions.

In that context, PanoAAU represents an interesting step in the ongoing evolution of radio access technology. It highlights the industry’s efforts to balance performance, cost and sustainability, while also preparing the network for emerging use cases that extend beyond traditional mobile broadband.

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Tuesday, 10 February 2026

Reconfigurable Antennas and the Infrastructure Implications For 6G

Reconfigurable antennas have been a topic of academic research for many years, but as 5G networks continue to densify and the industry begins to look seriously towards 6G, their relevance to real-world telecom infrastructure is becoming increasingly clear. A recent presentation by Prof. Chenhao Qi from Southeast University, Nanjing, China, titled Reconfigurable Antennas for Wireless Communications, offers a timely and technically rich overview of how antenna reconfigurability could influence future radio access network (RAN) design across sub-6 GHz, mmWave and, in the longer term, THz frequency bands. From an infrastructure perspective, the underlying message is straightforward: future networks will operate across far more diverse spectrum and deployment scenarios, and static antenna designs will struggle to deliver the required flexibility, efficiency and performance.

The performance targets associated with 6G go well beyond those of current 5G systems. Improvements are expected not only in peak data rates and spectral efficiency, but also in latency, positioning accuracy, reliability and energy efficiency. Achieving these targets requires networks that can adapt dynamically to changing electromagnetic conditions and physical environments. Today’s RAN deployments already span multiple layers, from sub-6 GHz macro coverage to mid-band capacity and mmWave hotspots. As frequencies increase, propagation becomes more sensitive to blockage, orientation and interference, making adaptability at the antenna level increasingly important.

Reconfigurable antennas are designed to address this challenge by allowing key antenna characteristics, such as operating frequency, radiation pattern and polarisation, to be adjusted dynamically. This adaptability can be achieved either electronically or through physical changes to the antenna structure. Electronically reconfigurable antennas integrate RF components such as PIN diodes, FET switches or MEMS into the antenna design, enabling very fast reconfiguration on timescales suitable for live network operation. Structurally reconfigurable antennas instead rely on physical movement or deformation of radiating elements, including approaches based on movable parts, liquid metals or flexible structures. While these techniques can offer high flexibility, they also introduce mechanical complexity and slower reconfiguration speeds, which can limit scalability in large-scale infrastructure deployments.

From a network infrastructure standpoint, electronic reconfiguration is particularly attractive. Fast switching speeds, compact integration and long-term reliability make it well suited to dense antenna arrays and multi-band base station designs. The ability to support multiple reconfiguration modes within a single antenna system also opens the door to more efficient hardware utilisation. Frequency reconfiguration allows antennas to switch between bands as spectrum availability or traffic demand changes. Polarisation reconfiguration can improve robustness in both line-of-sight and non-line-of-sight conditions by mitigating fading and misalignment. Pattern reconfiguration enables beam steering, null placement and coverage shaping without relying solely on external beamforming networks. In more advanced designs, these capabilities can be combined, allowing frequency, polarisation and radiation pattern to be adapted jointly.

The presentation also highlights how reconfigurable antennas interact with emerging RAN architectures, particularly in the context of integrated sensing and communication (ISAC) and massive MIMO. One example is a dual-band reconfigurable antenna array, commonly referred to as a DBRAA, that supports both sub-6 GHz and mmWave operation within a shared aperture. This reflects a practical reality for infrastructure deployments, where different frequency bands offer complementary advantages and must coexist efficiently. By dynamically forming sub-6 GHz antennas from mmWave elements, the DBRAA architecture enables finer control over antenna spacing and improved performance compared to fixed-position arrays, while also reducing the need for separate antenna hardware.

Another concept explored is the use of reconfigurable pixel antennas to realise electronically movable antenna arrays, described as reconfigurable pixel antenna-based electronic movable-antenna arrays (REMAA). The key insight here is that radiation pattern reconfiguration can be equivalent, from a channel perspective, to physically moving antenna elements. Achieving this electronically avoids the mechanical complexity associated with motor-driven or fluid-based movable antennas. For dense sites and space-constrained installations, REMAA offers a practical path to improved interference management, better multi-user performance and more efficient use of available antenna real estate.

At mmWave frequencies, power consumption and RF chain count remain major concerns for infrastructure providers. Hybrid beamforming architectures have already been adopted to strike a balance between performance and complexity, but the presentation goes a step further by introducing tri-hybrid beamforming. In this approach, digital beamforming, analogue beamforming and electromagnetic beamforming enabled by reconfigurable antennas are jointly optimised. Radiation-centre selection becomes an additional degree of freedom in the beamforming process, increasing design flexibility while reducing the number of active antenna ports. For large-scale mmWave arrays, this translates into higher spectral efficiency and improved energy efficiency, particularly as array sizes grow.

Taken together, these concepts point towards a future in which antenna systems play a far more active role in network optimisation. Reconfigurable antennas have the potential to reduce hardware duplication across frequency bands, improve adaptability to changing propagation conditions and traffic patterns, and support advanced use cases such as ISAC without a proportional increase in cost or power consumption. At the same time, the presentation makes it clear that several challenges remain, including accurate modelling of reconfigurable antennas, their integration into practical beamforming architectures and a deeper understanding of their end-to-end energy efficiency.

As the industry moves towards 6G, antennas are likely to evolve from largely static components into adaptive, software-controlled elements that are tightly integrated with signal processing and network intelligence. Reconfigurable antennas are not a single solution to all future RAN challenges, but they are emerging as an important building block for next-generation telecom infrastructure. For operators, vendors and infrastructure providers, the ideas presented offer a useful glimpse into how antenna technology could shape deployment strategies and network evolution in the years ahead.

The slides of the presentation are available here and the video is embedded below:

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Tuesday, 16 December 2025

Architecting Resilient Global Networks with Amazon LEO

At AWS re:Invent 2025, a joint presentation from Amazon LEO and AWS Global Infrastructure Services offered a detailed look at how non-terrestrial networks are being engineered to operate as part of modern global infrastructure. Nick Matthews, Principal Solutions Architect at Amazon LEO, and John Phillibert, Principal Network Development Engineer at AWS, focused not on consumer broadband headlines but on the architectural foundations needed to deliver resilient, low-latency connectivity at global scale.

The session provided a rare infrastructure-level walkthrough of how a low Earth orbit satellite network is being integrated directly with AWS edge and backbone services, and why this matters for enterprises, operators and critical infrastructure providers.

A LEO network designed like cloud infrastructure

Amazon LEO is building a constellation of more than 3,200 satellites in low Earth orbit, operating at altitudes between roughly 590 and 630 kilometres. From an infrastructure perspective, the key distinction from traditional geostationary satellite systems is not just lower latency, but the need to manage constant motion, frequent handovers and highly dynamic routing.

Satellites orbit the Earth approximately 16 times per day, remaining in view of a given location for only tens of seconds at a time. Rather than treating this as a constraint, Amazon LEO has designed the network using cloud-scale principles. Satellite positions, terminal locations and gateway connectivity are all highly predictable, allowing routing, frequency allocation and handover behaviour to be pre-computed and continuously optimised.

The result is a system that behaves far more like a terrestrial fibre or mobile network than a traditional satellite service, with expected round-trip latencies below 50 milliseconds and enterprise-grade throughput.

Terminals as hardened network edge devices

A significant portion of the engineering effort has been invested in user terminals. From an infrastructure viewpoint, these terminals act as the true network edge, and Amazon LEO has designed them to be rugged, simple to deploy and economically scalable.

Three terminal classes were outlined. A compact nano terminal supports low-power and IoT-style use cases. A pro terminal offers higher throughput in a device comparable in size to a laptop. At the high end, an ultra terminal supports gigabit-class connectivity suitable for large enterprise sites, temporary campuses or even data centre backup.

All terminals use electronically steered phased-array antennas, eliminating the need for mechanical movement and enabling rapid satellite tracking. From a deployment perspective, installation is intentionally straightforward, using standard Ethernet into existing enterprise or operational technology networks.

Space lasers and ground gateways as resilience tools

Beyond basic satellite-to-ground connectivity, Amazon LEO is deploying inter-satellite laser links. These links create a space-based backbone that allows traffic to be routed between satellites before descending to Earth. This has two important infrastructure implications.

First, it extends coverage to locations far from ground gateways, including oceans and air routes. Second, it introduces path diversity at a global scale. If a ground gateway is unavailable due to weather, fibre damage or power issues, traffic can be dynamically rerouted through alternative gateways without service interruption.

Ground gateways themselves are treated as high-capacity aggregation points, converting radio frequency links into terrestrial fibre connectivity. Their placement is closely aligned with AWS edge locations, minimising backhaul distance and reducing overall latency.

Tight integration with the AWS global backbone

John Phillibert’s contribution focused on why AWS infrastructure is central to making this model work at scale. AWS operates one of the world’s largest private global backbones, interconnecting regions, edge locations and direct connect sites over millions of kilometres of terrestrial and subsea fibre.

By anchoring Amazon LEO gateways directly into this backbone, satellite traffic enters a network designed for high automation, rapid fault remediation and consistent performance. Most network events within AWS are resolved automatically, without human intervention, which is essential when extending connectivity into remote or harsh environments.

Security is also built in at the infrastructure layer. AWS encrypts traffic across its backbone using MACsec, while Amazon LEO adds its own end-to-end encryption from terminal to point of presence. Even physical access to gateways or satellites yields only encrypted data, an important consideration for critical national infrastructure and regulated industries.

Infrastructure patterns for resilience and continuity

Several architectural patterns emerged repeatedly during the session. One is the use of Amazon LEO as a physically diverse connectivity path. Fibre cuts, natural disasters and power outages remain common failure modes in terrestrial networks, even in developed markets. A non-terrestrial path introduces true geographical and physical diversity, rather than simply logical redundancy.

Another pattern is rapid site enablement. In many industrial or logistics environments, waiting months for fibre or microwave links is not viable. A satellite terminal that can be shipped, installed and operational in days enables faster deployment of digital infrastructure, with terrestrial connectivity added later if required.

For more mature environments, Amazon LEO can complement existing architectures such as SD-WAN, private interconnects or direct cloud access. Integration with AWS Transit Gateway and Direct Connect allows traffic to remain private end to end, avoiding exposure to the public internet.

Extending compute and control to the edge

The infrastructure implications extend beyond connectivity alone. Reliable, high-bandwidth links enable changes in where compute and control systems are located. The session highlighted scenarios where local data centres exist solely because connectivity is unreliable. With improved resilience, workloads can be shifted to cloud regions, local zones or managed edge platforms.

In operational technology environments, this supports new models for monitoring, analytics and remote operation. SCADA systems, industrial sensors and video feeds can be securely backhauled to central platforms for analysis, while still maintaining local control loops where required.

This is less about replacing existing infrastructure overnight and more about enabling gradual architectural evolution, starting with connectivity and extending into compute placement and operational models.

A non-terrestrial network built for infrastructure scale

What stood out from the presentation was not just the technology itself, but the way it is being engineered. Amazon LEO is not positioned as a standalone satellite service, but as an extension of cloud and network infrastructure, designed using the same principles of automation, resilience and integration that underpin hyperscale data centres.

For telecom infrastructure professionals, the message was clear. Non-terrestrial networks are no longer niche overlays. When tightly integrated with terrestrial backbones, edge platforms and security frameworks, they become a foundational component of global connectivity strategies.

As Amazon LEO moves through its enterprise preview and towards service launch in 2026, its impact is likely to be felt less in marketing headlines and more in the quiet redesign of how resilient networks are built, extended and operated at global scale.

The talk is embedded below:

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Tuesday, 2 September 2025

Conical Antennas Boost Vodafone Germany’s Tunnel Coverage

Mobile coverage in tunnels has always been one of the most difficult challenges for network operators. Concrete walls, restricted space and the constant movement of air caused by passing vehicles all interfere with signal stability. Vodafone Germany has now taken a major step forward in overcoming these barriers with the deployment of a new generation of conical antennas. Designed by Ericsson, these antennas are engineered specifically for tunnel environments and have been introduced in the 1,400 metre Arlinger Tunnel near Pforzheim.

The new solution is based on a conical multi-band antenna that combines wide frequency support with a form factor able to withstand tunnel-specific conditions. Traditional antennas in tunnels often struggle with vibrations and pressure changes that occur whenever trains or cars move large volumes of air. These effects can cause instability in reception and transmission performance. The conical design offers superior resistance to these forces. Its aerodynamic shape reduces the impact of airflow and turbulence, which results in more stable signal propagation and higher reliability.

Ericsson’s antenna, known as the Antenna 9011 1LM (KRE 101 2571/1), operates across the 617 to 4200 MHz range. This wide frequency coverage ensures compatibility with all major mobile technologies from legacy 2G through to 5G mid-band and even C-band. The antenna achieves a gain of around 10 dBi and uses cross polarisation to support advanced features such as MIMO. It has been tested under demanding tunnel conditions, including alternating pressure cycles that simulate the effect of trains passing at high speed. These design elements make it particularly suitable for deployment in both road and rail tunnels.

In the Arlinger Tunnel, five of these antennas have been installed. Together they provide seamless coverage along the full tunnel length, ensuring that drivers and passengers can stay connected without interruptions. For commuters this means fewer dropped calls and more consistent data performance, while for Vodafone it represents a significant step in eliminating dead spots in challenging locations. The project also demonstrates how antenna engineering is evolving to meet the requirements of complex environments.

Delivering mobile coverage in tunnels is more complicated than simply placing antennas inside the structure. In shorter tunnels, antennas positioned at the entrance and exit can often suffice. In longer tunnels, however, operators must deploy signal repeaters and distribute the signal along the length of the tunnel using multiple antennas. This requires the installation of cabling and associated equipment, usually during periods when tunnels are closed for maintenance. To avoid duplication, one operator typically provides the infrastructure and others connect their networks to it.

Germany has a particularly extensive tunnel network with more than 270 tunnels on federal highways, over 400 on district and urban roads, and 761 railway tunnels. Collectively these extend for more than 1,200 kilometres. The introduction of conical antennas marks a practical response to the specific difficulties these environments present. Vodafone has already announced that it intends to use the new antenna type in 20 further tunnel projects across the country.

From an infrastructure perspective, the Arlinger Tunnel deployment highlights a broader trend towards highly specialised antenna systems. Rather than adapting generic equipment, manufacturers such as Ericsson are now producing models tailored for environments where airflow, vibration and space constraints dominate. The Antenna 9011 1LM shows how much progress has been made. Its mechanical robustness, compact size and wideband capability make it a versatile component for future-proof tunnel deployments.

Vodafone Germany’s network already reaches more than 93 percent of the population with 5G and the addition of tunnel coverage strengthens this footprint. For the growing number of travellers who depend on uninterrupted connectivity, solutions like the conical antenna are not just a technical achievement but also a practical improvement to everyday digital life. They also underline the importance of collaboration between operators and equipment vendors in tackling some of the toughest remaining infrastructure gaps.

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Tuesday, 29 July 2025

NGMN’s Common Language for Antennas Lays the Foundation for Future-Proof Infrastructure

Base station antennas are critical components of mobile networks, serving as the final link between radio systems and the air interface. Despite their importance, there has long been a lack of consistency in how antenna systems are specified, validated and integrated into networks. This inconsistency has led to inefficiencies in procurement, difficulties in multi-vendor environments, and challenges in scaling network performance. The latest publication from the NGMN Alliance, “Recommendations for Base Station Antennas”, aims to change this by introducing a harmonised framework for describing passive, active and hybrid antenna systems.

The updated document combines the previously separate guidance on passive and active antenna systems into a single, unified publication. Developed under the BASTA (Base Station Antenna) project, it defines a comprehensive set of electrical, mechanical and environmental parameters relevant to base station antennas. These include radiation characteristics such as gain, beamwidth, front-to-back ratio and sidelobe suppression, as well as practical aspects like dimensions, weight, connector type, wind load and ingress protection. For active antennas, it also defines parameters for beamforming capability, scanning range, traffic beam configuration and power control.

One of the key motivations behind the updated recommendations is the growing use of hybrid antenna systems. These combine passive elements, such as the antenna array and remote electrical tilt, with integrated active components like transceivers and digital beamforming units. Hybrid configurations are especially relevant in 5G networks, which rely on advanced techniques like massive MIMO and dynamic beam steering to deliver high capacity and spectral efficiency. However, deploying such systems at scale, particularly in disaggregated or Open RAN architectures, requires a standardised way to describe and compare antenna products from different vendors.

The NGMN publication addresses this need by introducing a structured methodology for presenting antenna parameters, including definitions, recommended test practices and digital exchange formats. Notably, it supports XML-based datasheets aligned with an agreed schema, enabling machine-readable processing of antenna data. This is particularly useful for operators seeking to automate parts of the network planning and procurement lifecycle, including performance comparison, site design and integration testing.

The framework also incorporates coordinate system conventions, including multiple spherical and Cartesian reference models, to provide flexibility in how antenna orientation and beam direction are described. This is essential for accurate modelling of antenna coverage and interference in radio planning tools. The document additionally covers Remote Electrical Tilt (RET) systems, including configuration management, software upgradeability and compliance with AISG protocols.

Importantly, the NGMN recommendations are designed to be implementation-agnostic. Rather than enforcing performance thresholds or mandating design practices, the focus is on standardising the language used to describe antenna characteristics. This approach ensures that innovative antenna designs, including those supporting new form factors or frequency bands, can still be accommodated as long as they conform to the descriptive framework.

A further advantage of the framework is its extensibility. While the current version focuses on antennas operating below 6 GHz, it is expected that future versions will include extensions for higher frequency bands and additional attributes such as energy consumption, carbon footprint and circularity. These sustainability metrics will become increasingly important as networks aim to reduce their environmental impact while delivering ever-higher performance.

The importance of this work becomes clear in the context of multi-vendor and disaggregated networks, where interoperability depends not only on open interfaces but also on consistent component descriptions. A shared vocabulary for base station antennas enables smoother integration, better lifecycle management and more effective use of network resources. It also reduces vendor lock-in and improves supply chain flexibility, which is especially valuable for operators pursuing Open RAN strategies.

As antenna systems continue to evolve, the ability to describe their behaviour and capabilities with precision will be vital. NGMN’s BASTA recommendations offer a practical and forward-looking solution, supporting both current deployment models and the transition toward future architectures such as 6G. By promoting transparency, repeatability and interoperability, this common language for antennas strengthens the foundation of mobile network infrastructure and contributes to a more efficient, open and sustainable ecosystem.

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Thursday, 3 July 2025

Transforming Poles into 5G Sites with Alpha Fusion Streetworks Solutions

During a recent visit to Glasgow for the SCONDA project showcase, a collaborative initiative focused on advancing urban connectivity, I was struck by how far street-level network infrastructure has come in combining functionality with aesthetics. Among the most visually discreet and technically advanced deployments were those featuring Alpha Wireless' wraparound antennas. The AW4032 antenna stood out for its innovative design, enabling mid-pole mounting in a configuration that blended effortlessly with the urban environment while delivering high-performance 5G coverage. 

Live tests on attendees’ devices showed 5G download speeds reaching up to 720 Mbps, with improved coverage and congestion relief across city-centre locations. One attendee reported that the deployment achieved average 5G download speeds of 520 Mbps, while also reducing low-speed hours by 89% and reaching peaks of over 1 Gbps on small cells in a live dense environment.

Alpha Wireless has developed its Fusion Streetworks solutions with a clear understanding of the challenges faced by operators in urban areas. As network densification accelerates, especially with the move towards 5G standalone architectures, securing new street-level sites is proving increasingly difficult. The Fusion Streetworks platform responds to this by making better use of existing infrastructure such as lamp posts and streetlights. The AW4032 antenna, which forms the centrepiece of this platform, is designed to mount mid-pole without requiring sidearms or external hardware that would increase wind loading or visual impact. As it is an antenna-only product, the AW4032 pairs with external small cell radios, offering operators flexibility in radio selection.

The AW4032 combines compact form with support for advanced radio capabilities. It supports 16 ports across dual bands — 1695 to 2690 MHz and 3300 to 4200 MHz — and enables 4x4 MIMO, delivering strong signal quality and throughput. When ports in adjacent sectors are connected, the antenna produces a pseudo-omnidirectional pattern, providing seamless 360-degree coverage suitable for dense urban environments, hotspots and high-traffic venues. It is also highly adaptable. Operators can configure the ports to suit different patterns: back-to-back for focused directional coverage, or four-way for broader area coverage, all using the same hardware.

This modularity means the same unit can serve single or dual-operator deployments, with each operator connecting to a separate set of ports. This enables shared infrastructure without interference and lowers total cost of ownership. For instance, the dual-operator setup divides the 16 ports between two MNOs while still offering pseudo-omni performance, which is particularly useful in areas where zoning permissions limit the number of separate installations.

What makes the solution especially effective in public spaces is the attention to detail in concealment. The Fusion platform includes options for radio shrouds and integrated cabling management to maintain a neat appearance. This has been instrumental in speeding up approvals in areas traditionally sensitive to new telecoms infrastructure.

Alpha Wireless has already seen its Fusion Streetworks solutions rolled out as part of a 5G standalone deployment in central Birmingham. Working with Ontix and Virgin Media O2, these antennas have been deployed on existing poles in busy city locations, demonstrating how legacy infrastructure can be revitalised to meet the demands of next-generation connectivity.

From an infrastructure perspective, the AW4032 exemplifies how antenna technology is evolving to match the operational and regulatory pressures of modern small cell deployment. It simplifies rollout, minimises street clutter, and offers a level of future readiness that is essential for long-term network planning. For cities looking to accelerate their 5G ambitions without compromising on design, Alpha Wireless’ Fusion Streetworks platform offers a proven and practical approach.

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Tuesday, 8 April 2025

Mobile Internet Setup for Vanlife: Infrastructure Insights from The Road Two Spoons

In today’s age of digital nomadism, mobile connectivity isn’t a luxury—it’s a necessity. For vanlifers like Jess and Marcus, better known as The Road Two Spoons, staying online while travelling full-time across Europe and Türkiye requires more than just a mobile hotspot. Their campervan serves as both home and office, meaning a robust and redundant internet setup is essential.

Their upgraded system offers a great case study into the infrastructure behind reliable van-based internet. It combines cellular and satellite connectivity with intelligent routing and efficient power use—demonstrating how mobile networking hardware can be optimised for life on the road.

The Core: A Multi-Path Internet Router

At the heart of the setup is the Teltonika RUTX50, a compact yet powerful 3G/4G/5G modem-router that supports multiple WAN inputs and advanced network management. Key features include:

  • Dual SIM support for redundancy (though only one slot is currently in use)
  • Auto-switching and load balancing capabilities
  • A low power draw suitable for off-grid living
  • 12V operation with physical on/off switching
  • Multiple antenna ports: 4 x SMA for 5G, 2 x ReSMA for Wi-Fi, and 1 x SMA for GPS
  • 5 x Gigabit Ethernet ports for flexible wired connections

The router integrates seamlessly with both a 5G antenna and a Starlink dish, offering connectivity even in the most remote regions.

Cellular Connectivity: Poynting Antenna Integration

For cellular signal reception, the van uses a Poynting MIMO-4-4 5G antenna. This external, roof-mounted unit connects directly to the RUTX50 to ensure strong signal acquisition, especially in fringe coverage areas.

This antenna enhances the performance of their ConnectPls Europe unlimited data SIM, providing primary connectivity when Starlink is unavailable or switched off. The setup allows automatic failover between cellular and satellite internet sources, keeping downtime to a minimum.

Satellite Support: Starlink Gen3 + Starvmount

Mounted securely on the van roof is a Starlink Gen3 (V4) dish, using the Starvmount DishyMultiMount. This combination ensures:

  • Flat, in-motion satellite connectivity via Starlink Roam
  • Fixed mounting at an optimal 8° angle, aiding both signal quality and weather resilience
  • Improved mechanical security over Starlink’s original mobility mount

Thanks to Starlink’s global coverage and low-Earth orbit satellite constellation, the couple can achieve 200+ Mbps speeds in locations where even sending a text would otherwise be impossible.

Power Considerations: 12V Starlink Conversion

To avoid reliance on inverters and 230V AC power, the Starlink system runs directly off the van’s 12V power system using a Starvmount Dishy NoAC DC power supply. This device:

  • Accepts a wide input voltage (9–36V), suitable for 12V or 24V installations
  • Offers plug-and-play integration between the Starlink dish and the RUTX50
  • Eliminates the need for Starlink’s original AC-powered router
  • Emits a minor static noise under load, so is ideally installed in a cupboard or enclosed space

A dedicated 12V switch allows the system to be powered down when not in use, contributing to overall energy efficiency.

Cabling and Waterproofing: Roof-Grade Sealing

Cables for both Starlink and the Poynting antenna are routed through the van’s roof using Scanstrut DS-H-MULTI-BLK cable seals. These seals are:

  • IP68-rated for waterproofing
  • UV-stable to withstand prolonged sun exposure
  • Trusted for roof penetrations in marine and automotive applications

This careful attention to weatherproofing ensures long-term reliability of the system, even in extreme environments.

One Wi-Fi Access Point, Seamless Switching

Because both Starlink and cellular data feed into the same RUTX50 router, the van operates a single internal Wi-Fi access point. The router automatically prioritises the Starlink connection when available, and falls back to the SIM card with minimal delay when Starlink is powered off.

This means no manual reconfiguration is required, simplifying the digital experience onboard and allowing Jess and Marcus to focus on their work, travel, and content creation.

Final Thoughts: Engineering Freedom on Four Wheels

What makes this campervan internet setup impressive is not just the performance, but the thoughtful integration of multiple technologies: 5G, satellite broadband, power management, and rugged installation. By combining a modular approach with careful hardware selection, The Road Two Spoons have created a high-reliability infrastructure that could easily be adapted to off-grid cabins, remote workstations, or mobile command vehicles.

As connectivity becomes more critical in all forms of modern living, this vanlife case study offers valuable insights into how telecom infrastructure can be effectively deployed outside traditional settings—bringing reliable broadband to wherever the road leads.

Watch the Setup in Action 🎥

Here’s a short video from The Road Two Spoons walking through their full campervan internet setup—from antennas to modems and Starlink on 12V:

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Tuesday, 14 January 2025

Decoding Starlink: The Technology Behind the Revolution

Starlink has been a regular feature on our blog. The race to provide global connectivity has seen remarkable innovation, and Starlink, SpaceX's satellite internet service, has been at the forefront. By utilising a network of low Earth orbit (LEO) satellites, Starlink promises faster speeds and reduced latency compared to traditional satellite internet. But what exactly sets Starlink apart? Let’s delve into the technical marvels behind this ground-breaking system.

Traditional broadcast satellites operate in geostationary orbits, approximately 35,000 kilometres above Earth. In contrast, Starlink's LEO satellites, orbiting at altitudes of around 550 kilometres, drastically reduce the distance signals travel. This significantly enhances performance and reduces latency, forming the foundation of Starlink’s technological advantage.

With Starlink internet, data is continuously exchanged between a ground dish and a Starlink satellite zooming across the sky at an incredible 27,000 km/h. How can the dish and satellite maintain a continuous connection? And how is data transmitted so efficiently? The video below delves deeply into the workings of the ground dish and satellites, revealing how a beam of data is formed, how it is swept across the sky, and what precisely is in that beam enabling incredibly fast internet speeds. This is a remarkable feat of technology and engineering!

Inside the Starlink Dish: Dishy McFlatface

At the heart of the Starlink system is its ground terminal, affectionately known as Dishy McFlatface. This device features an aperture-coupled patch antenna, a sophisticated design that allows it to efficiently emit and receive electromagnetic waves. Unlike traditional parabolic dishes, Dishy is compact, sleek, and meticulously optimised for Starlink’s specific needs.

How Does Dishy Work?

Dishy’s ability to send and receive data hinges on two critical technologies: beamforming and phased array beam steering.

  • Beamforming enables the dish to focus its electromagnetic waves into a directed beam, efficiently reaching Starlink satellites in orbit.
  • Phased Array Beam Steering introduces dynamism, allowing the beam to move across the sky by electronically adjusting the phase of signals emitted from various antenna elements. This agility is essential for maintaining a seamless connection with rapidly moving LEO satellites.

A Look at Signal Transmission

Once a beam is formed and directed, Dishy employs advanced modulation techniques, such as 64QAM (Quadrature Amplitude Modulation), to transmit data. This method combines amplitude and phase variations, maximising data throughput—a vital requirement for high-speed internet services.

Scaling Down: Electromagnetic Waves and Dishy’s Dimensions

Despite its advanced functionality, Dishy remains surprisingly compact. This miniaturisation is achieved by leveraging the properties of electromagnetic waves and employing innovative design principles, as outlined in Starlink’s patents.

The Bigger Picture

Starlink’s phased array technology represents a monumental leap in satellite communications, with implications extending beyond internet services. Its ability to dynamically steer beams has the potential to revolutionise fields such as autonomous vehicles, IoT, and remote sensing.

Conclusion

Starlink isn’t merely about providing internet access; it’s about redefining the very concept of connectivity. Through ground-breaking innovations in satellite placement, ground terminal design, and signal processing, Starlink sets a new benchmark for telecom infrastructure.

Video Contents

All the above is explained in a fantastic manner in the video embedded below. The video’s table of contents with timestamps for easy navigation as follows:

  • 00:00 - Intro to Starlink
  • 01:00 - Overview of Exploring Starlink
  • 01:46 - Difference between Starlink and Broadcast Satellites
  • 03:28 - Parts Inside a Dishy McFlatface
  • 05:06 - How Does an Aperture-Coupled Patch Antenna Work?
  • 09:13 - Electromagnetic Wave Emission
  • 12:45 - Forming a Beam that Reaches Space: Beamforming
  • 15:22 - Brilliant
  • 16:52 - Steering a Beam to Sweep Across the Sky
  • 18:54 - Starlink: Phased Array Beam Steering
  • 21:11 - Notes on Phased Array Beam Steering
  • 22:24 - Sending Data in a Beam to the Starlink Satellite
  • 23:27 - Inner Workings of 64QAM
  • 26:02 - Actual Size of Starlink Dishy & Electromagnetic Waves
  • 26:55 - Images from the Starlink Patent
  • 27:49 - Outro

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Tuesday, 17 September 2024

High-Speed FWA Using mmWave With the Help of Li-Fi

On a regular basis I keep reading about how Fixed Wireless Access (FWA) continues to gain ground at the expense of cable operators, especially in the USA (see articles by Ookla, OpenSignal). One of the challenges with FWA is the need to (generally) install external antennas, especially when higher frequencies like mmWaves is involved.

One of the approach would be to use transparent antennas that I have explained here. This would be difficult for residential consumers. The other approach, championed by pureLiFi is to use Light Based Communications to let the signal pass from outside to inside. Both these approaches were my wow moments at MWC 2024.

TelecomTV has a nice write-up on the pureLiFi/Solace solution from the conference here. Quoting from that:

This week, pureLiFi announced the LINXC Bridge, a self-installable double limpet that attaches itself to both sides of a window (see picture, above). 

“The idea is to help the signal get through glass,” explained pureLiFi CEO, Alistair Banham. The device transmits an optical version of the incoming radio signal through the glass window so the data can then be distributed to a router or other device once inside the room.

According to Banham, “getting outside signals in” has become ever more difficult as radio technologies have climbed the frequency range and adopted complex encodings, such as orthogonal frequency division multiplexing (OFDM), while the materials used to construct buildings have become less  permeable to radio signals. This is a looming problem, he says, because telcos will increasingly rely on millimetre wave (mmWave) fixed 5G radio links to extend broadband services, especially to those hard-to-reach homes and businesses in remote locations, and mmWave doesn’t like walls or windows.

The pureLiFi LINXC Bridge, developed in partnership with Canadian company Solace Power, is designed to overcome some of those problems. “A top priority is the avoidance of truck roll, so a key attraction for our telco customers is the system’s ease of installation – there’s no requirement to for an outside antenna or hole-boring through the side of the customer’s building, as the LINXC is designed to be self-installed, which eliminates installation costs and shortens the time to market for telco-delivered wireless broadband,” said Banham.

But the real Li-Fi breakthrough came about halfway through 2023 when the IEEE (Institute of Electrical and Electronics Engineers) took the wraps off 802.11bb, the optical variant of the Wi-Fi standard and, as a result, Li-Fi and Wi-Fi should be able to interwork within a customer’s premises. 

“Last year,” Banham explained, “we developed the light antenna so a Wi-Fi network can see it as just another antenna, so now we have full interoperability and that means we can demonstrate a complete ecosystem so that customers can see, touch, feel and understand its benefits.”

Perhaps the biggest benefit, and most attractive niche for Li-Fi, is within so-called radio sensitive environments which, thanks to the interoperability with Wi-Fi,  will enable it to selectively reach and connect things like critical medical equipment, for instance (a large and growing application area).

The new mmWave bridge product isn’t pureLiFi’s only offering –  there’s SkyLite, a “whole-room Li-Fi access point” and the Cube, described as a simple, secure working from home, gaming, streaming and on-the-move connectivity device.  

Banham says the ambition doesn’t stop there, as the company has plans to have Li-Fi “augment and extend other wireless and wireless technologies, ushering in a new era of bandwidth, speed and reliable communications."

The press release from Solace Power also includes the video of the solution and is available here.

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