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|Title:||3-to-5GHz 4-channel UWB beamforming transmitter with 1° phase resolution through calibrated vernier delay line in 0.13μm CMOS|
|Authors:||Wang, L. |
|Source:||Wang, L.,Guo, Y.X.,Lian, Y.,Heng, C.H. (2012). 3-to-5GHz 4-channel UWB beamforming transmitter with 1° phase resolution through calibrated vernier delay line in 0.13μm CMOS. Digest of Technical Papers - IEEE International Solid-State Circuits Conference 55 : 444-445. ScholarBank@NUS Repository. https://doi.org/10.1109/ISSCC.2012.6177083|
|Abstract:||Narrow-band phased-array transmitters provide an efficient way of obtaining higher power through spatial combining and achieving higher transmitter EIRP. They also provide beamforming and beam-steering capabilities . However, the commonly used phase shifter or LO phase-shifting techniques at RF become less attractive for 3-to-5GHz UWB due to their lossy, bulky and narrowband characteristics. On the other hand, True-Time-Delay (TTD)-based beamforming transmitters employed at baseband have been popularly adopted due to UWB's inherent digitally intensive nature . However owing to the limited achievable delay resolution and delay accuracy, the reported phase resolution is normally limited to 10°. This work introduces a 3-to-5GHz UWB beamforming system spanning from -45° to 90° phase range with 1° phase resolution. The fine delay resolution is achieved through a Vernier delay line without the need of advanced technology. The delay is calibrated with a ΔΣ DLL. © 2012 IEEE.|
|Source Title:||Digest of Technical Papers - IEEE International Solid-State Circuits Conference|
|Appears in Collections:||Staff Publications|
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