2019 · 72 citations · 4 references
EngineeringComputer EngineeringElectrical EngineeringAntennasMicroelectronicsWireless CommunicationsBeam SteeringBeamformingHigh-frequency Semiconductor DevicesMicrowave Integrated CircuitsMillimeter-wave CommunicationsRadio-frequency Integrated CircuitsBeam Steering In Millimeter-wave SystemsBeamforming GainGain ControlHybrid BeamformingMillimeter-wave Integrated CircuitsPhase ShiftersPower ConsumptionWireless Communication Systems
Millimeter-wave beamforming front-end ICs have been studied intensively as the service of 5G wireless communication is scheduled to begin in the near future [1-4]. The ICs include circuit elements such as PAs, LNAs, phase shifters, variable gain blocks, and switches to support antenna arrays for RF/hybrid beamforming. Due to the large number of antennas required for beamforming, the beamforming IC should include as many circuit elements as possible in a chip. The IC also needs high phase- and gain-control resolutions not only for controlling the beams precisely but also for error corrections and calibrations [1]. However, higher-bit controls of the phase and gain as well as high transmitting power increase the chip size in conventional structures, posing a trade-off between them. The front-end IC structure proposed here increases both transmitting power and gain/phase resolutions without increasing either the chip size or the power consumption.
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Bodhisatwa Sadhu, Yahya Tousi, Joakim Hallin et al. · IEEE Journal of Solid-State Circuits · 2017 · 567 citations
Kerim Kibaroglu, Mustafa Sayginer, Gabriel M. Rebeiz · IEEE Journal of Solid-State Circuits · 2018 · 431 citations