首页|W-band CMOS beamforming ICs and integrated phased-array antennas with 20+Gb/s data rates
W-band CMOS beamforming ICs and integrated phased-array antennas with 20+Gb/s data rates
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This article presents the design and implementation of W-band transmitter(TX)and receiver(RX)phased-array antennas,which leverage CMOS and printed circuit board(PCB)technologies to integrate the phased-array antennas with eight-channel beamforming ICs.The beamforming IC applies the variable gain amplifier(VGA)with fractional bits and the vector-modulated variable gain phase shifter(VGPS)for wide range and high precision of gain and phase shifting,providing moderate power gain.The phased-array board consists of 384 TX and 384 RX antenna elements,along with 48 TX and 48 RX beamforming ICs.It also incorporates Wilkinson power dividers/combiners,a power management system,and a beamforming control module,all integrated into a cost-effective multi-layer PCB.Fabricated in 65-nm bulk CMOS,the IC achieves 3° RMS phase error for phase shifting and 0.5 dB RMS gain error for gain shifting,ensuring high precision of antenna pointing.The over-the-air(OTA)measurement of the proposed W-band phased-array antennas achieves a 64-QAM constellation with a symbol rate of 3.5 GS/s,resulting in raw data rates of 21 Gb/s.
W-bandphased arrayCMOSGigabit wireless linkantenna on PCB
Dixian ZHAO、Peigen YU、Shan JIANG、Weihan GAO、Pingyang HE、Huiqi LIU
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School of Information Science and Engineering,Southeast University,Nanjing 210096,China
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