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IBM and Ericsson squeeze mmWave phased array antennas into tiny module

With all the interest in millimeter wave spectrum to expand 5G (and WiFi) capacity, this has moved rapidly up the agenda of major vendors’ R&D programs. Targeting the 28 GHz band, IBM and Ericsson have collaborated to produce a phased array antenna in silicon, measuring just 2.8-inches square, which would enable it to be deployed in a wide range of form factors. The joint research project has resulted in a silicon-based array of 64 antennas, which support concurrent dual polarization both in transmit and receive modes. The companies have demonstated their prototype in a module of the kind they expect to be integrated into future 5G base stations for mmWave bands. They showed off the device working in 28 GHz,…

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