Please use this identifier to cite or link to this item: https://doi.org/10.1109/JSSC.2012.2216704
Title: 3-5 GHz 4-channel UWB beamforming transmitter with 1° scanning resolution through calibrated vernier delay line in 0.13-μm CMOS
Authors: Wang, L. 
Lian, Y. 
Heng, C.-H. 
Keywords: Δσ DLL
All-digital UWB transmitter
beamforming delay chain
PSD calibration circuit
UWB beamforming transmitter
Vernier delay line
Issue Date: 2012
Source: Wang, L., Lian, Y., Heng, C.-H. (2012). 3-5 GHz 4-channel UWB beamforming transmitter with 1° scanning resolution through calibrated vernier delay line in 0.13-μm CMOS. IEEE Journal of Solid-State Circuits 47 (12) : 3145-3159. ScholarBank@NUS Repository. https://doi.org/10.1109/JSSC.2012.2216704
Abstract: A 3-5 GHz 4-channel UWB beamforming transmitter with 1° scanning resolution and 135° scanning range is presented in this paper. The fine resolution is attained through Vernier delay lines capable of fine resolution down to 10 ps. Accurate path delay across channels as well as UWB pulse center frequency are achieved through the proposed Δσ DLL calibration technique, which speeds up the calibration by 48 times compared with a counter-based approach. A novel power spectral density calibration circuit is included to adjust the UWB pulse shape for meeting the FCC mask. Fabricated in 0.13-μm CMOS, the proposed transmitter occupies only 7.2 μm. The power consumption is 9.6 mW while transmitting at 80 Mbps, with each transmitter achieving 10 pJ/bit and transmitter efficiency of 7.5%. This is about ten times better than those existing UWB beamforming transmitters. © 2012 IEEE.
Source Title: IEEE Journal of Solid-State Circuits
URI: http://scholarbank.nus.edu.sg/handle/10635/53855
ISSN: 00189200
DOI: 10.1109/JSSC.2012.2216704
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