Feature: Wireless Technology
A great example of Q/V band technology in action is the European Space Agency's ARTES initiative, which is driving forward the development of advanced satellite communications
Advanced satellite communications For many satellite operators, the Q/V band is the next step. This band doesn’t have the same level of atmospheric attenuation problems that come with higher frequencies. A great example of Q/V band
technology in action is the ARTES initiative by the European Space Agency (ESA), which is driving forward the development of advanced satellite communications. Filtronic has secured a contract with ESA to develop cutting- edge RF solutions for next-generation satellite networks for the Q/V band, as well as the K and Ka bands. Te project focuses on developing
high power, high linearity feeder links for satellite payloads. To make this work, different frequency bands are used for specific tasks — the Q-band is used for the downlink, from satellite to ground stations. Te high-power feeder link enables high data throughput to meet the needs of expanding New-Space constellations.
For the uplink, i.e., receiving data on
the satellite, the V-band is used, which allows access to large bandwidth for significantly higher data rates. This setup makes for much more efficient data transmission and plays a key role in boosting broadband access. It’s especially important for mega constellations, which are essential for meeting the growing global need for fast and reliable data.
Secure communications Beyond boosting commercial satellite services, the Q/V band holds great potential for secure communications, particularly in defence and military applications. The narrower beam width at higher frequencies is less susceptible to interception or jamming, which is crucial for military-grade communication systems. As frequencies increase, the signal
becomes more focused. Lower frequencies spread out, making them easier to intercept. But at millimetre-
wave frequencies like that of the Q and V bands, the signal is more targeted and less vulnerable to interference. This makes this band ideal for secure communications, particularly in sensitive, high-risk environments like battlefield operations. They are also harder to jam with interferers as the power required would be beyond the capabilities of conventional systems. While tactical communications at millimetre-wave frequencies aren’t widespread yet, their potential for better security and more efficient data transmission is driving growing interest within the defence sector. Higher frequencies are also improving missile technology, particularly in millimetre-wave seekers. The increased resolution of radar and detection systems at these frequencies allows for enhanced spatial awareness, crucial for pinpointing targets with greater accuracy, yet with the same protection from jamming in contested environments.
Thermal challenges As promising as the Q/V band is, one major problem its dedicated devices suffer from is heat management. Higher frequency devices are less efficient, so naturally convert more power into heat, which becomes especially problematic in space or other extreme environments where space and weight are at a premium and thermal management difficult. The good news is that advances in
www.electronicsworld.co.uk July/August 2025 09
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