An adaptive beamforming technique for UWB impulse transceiver
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 ca...
Saved in:
| Main Authors: | , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2019
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/105608 http://hdl.handle.net/10220/50178 http://dx.doi.org/10.1109/TCSII.2018.2866614 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | 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. |
|---|