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Telecom Business Review | Wednesday, March 16, 2022
The experimental results, presented at the 3rd International Union of Radio Science Atlantic/Asia-Pacific Radio Science Meeting, indicate that the device can provide continuous 'wide-angle' beam steering, allowing it to track a moving mobile phone user.
FREMONT, CA: A group of experts has revealed a new beam-steering antenna that improves data transmission efficiency for 'beyond 5G' - and opens up a spectrum of frequencies for mobile communications that are now unavailable to current technology. This device is capable of providing continuous beam steering, which makes it possible to track a mobile phone user in the same way that a satellite dish tracks a moving object, but at significantly faster speeds, according to the experimental results presented at the 3rd International Union of Radio Science Atlantic/Asia-Pacific Radio Science Meeting. The beam-steering antenna was developed by Dr James Churm, Dr Muhammad Rabbani, and Professor Alexandros Feresidis, Head of the Metamaterials Engineering Laboratory, to solve the efficiency problem of fixed base station antennas at higher frequencies that prevent them from being used for long-distance transmission.
The technology, which is around the size of an iPhone, is based on a metamaterial, which is a metal sheet with a grid of micrometre-sized pores. An actuator controls the height of a cavity within the metamaterial, delivering micrometre movements, and the antenna controls the deflection of a radio wave beam based on its position, focusing the beam into a highly directed signal and redirecting that energy as desired while increasing transmission efficiency. In addition to prototypes that will work with higher frequencies, the team is now working on applications that will extend beyond 5G mobile communications. A researcher at the University of Birmingham remarked that their models show how the beam steering technology might be capable of 94 per cent efficiency at 300 GHz, even though it was built for 5G use. Further, he also noted that the technology can be adapted for use in vehicle-to-vehicle, vehicle-to-infrastructure, vehicular radar, and satellite communications, enabling it for next-generation usage in automotive, radar, space and defence applications. At frequencies spanning the millimetre wave spectrum, particularly those identified for 5G (mmWave) and 6G, where high efficiency is currently only possible with sluggish, mechanically steered antenna technologies, the technology has shown vast improvements in data transmission efficiency.
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Prototypes of the beam-steering antenna at 26 GHz have demonstrated remarkable data transmission efficiency for 5G mmWave applications. The gadget is backwards compatible with the current 5G requirements used by mobile communication networks. Also, instead of employing the complex and inefficient feeding networks necessary for routinely deployed antenna systems, the new technique uses a low-complexity system that enhances performance and is easy to build. Dr Churm noted that the simplicity of the design and low cost of the elements are helpful for early adoption by the industry and the compact electronics layout makes it straightforward to deploy where space is limited. The team believes that the beam-steering antenna is suitable for a wide range of 5G and 6G applications along with the satellite and Internet of Things.
The University of Birmingham Enterprise has filed a patent for its next-generation beam-steering antenna technology and is looking for industry partners for cooperation, product development, and licencing.
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