An Adaptive Beamforming Technique for UWB Impulse Transceiver
| Autor: | Yuanjin Zheng, Supeng Liu, Zhongyuan Fang, Lei Qiu |
|---|---|
| Přispěvatelé: | School of Electrical and Electronic Engineering |
| Rok vydání: | 2019 |
| Předmět: |
Physics
Beamforming business.industry CMOS 020208 electrical & electronic engineering Beam steering Transmitter Electrical engineering 020206 networking & telecommunications 02 engineering and technology Impulse (physics) Phase-locked loop Beanforming Delay-locked loop Electrical and electronic engineering [Engineering] 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Transceiver business Adaptive beamformer |
| Zdroj: | IEEE Transactions on Circuits and Systems II: Express Briefs. 66:417-421 |
| ISSN: | 1558-3791 1549-7747 |
| DOI: | 10.1109/tcsii.2018.2866614 |
| Popis: | 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 0~250 ps to achieve beam-steering capability. Each beamforming receiver channel has a measured continuous time delay between 0~250 ps. The proposed beamformer could provide maximum scan angle of up to ±60° for two antennas with about 8-cm spacing. Fabricated in 0.18-μm CMOS, the TX can beam steer across the full spatial range with resolution of 4°, and the RX can continuously scan the full range with resolution of 3°. The transmitter consumes 37 mA at 10 Mbps and receiver consumes 84 mA under 1.8-V power supply. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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