An Adaptive Beamforming Technique for UWB Impulse Transceiver

作者：Qiu, Lei^*; Liu, Supeng; Fang, Zhongyuan; Zheng, Yuanjin

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2019, 66(3): 417-421.

DOI：10.1109/TCSII.2018.2866614

• Beamforming
• CMOS
• impulse radio
• pulse generator
• receiver ultra
• transmitter
• ultra-wideband (UWB)

A two-channel beamforming ultra-wideband (UWB) impulse transceiver chip, which includes a beam steering TX controlled by a fractional delay locked loop and an adaptive RX that can self-tune the beamforming to the direction of incident pulses, is presented. The dual-channel timed array transmitter can generate UWB pulses in two separate transmitter paths with tunable path delay difference of 0 similar to 250 ps to achieve beam-steering capability. Each beamforming receiver channel has a measured continuous time delay between 0 similar to 250 ps. The proposed beamformer could provide maximum scan angle of up to +/- 60 degrees for two antennas with about 8-cm spacing. Fabricated in 0.18-mu m CMOS, the TX can beam steer across the full spatial range with resolution of 4 degrees, and the RX can continuously scan the full range with resolution of 3 degrees. The transmitter consumes 37 mA at 10 Mbps and receiver consumes 84 mA under 1.8-V power supply.

• 出版日期2019-3
• 单位同济大学; 南阳理工学院