Title :
A Wideband CMOS Linear Digital Phase Rotator
Author :
Wang, Hua ; Hajimiri, Ali
Author_Institution :
California Inst. of Technol., Pasadena
Abstract :
This paper presents a 10-bit wideband Cartesian phase rotator with a novel linear digital VGA implemented in a 0.13 um CMOS process. The VGA topology is robust to device modeling uncertainties and PVT variations. The system provides 7.8 dB voltage gain with -3 dB bandwidth of 7.6 GHz. A maximum phase error of 2deg has been achieved for a phase shifting range of 360deg with 32 phase steps of 11.25deg. The capability to compensate for mismatched quadrature inputs is also demonstrated.
Keywords :
CMOS integrated circuits; phase shifters; wideband amplifiers; CMOS process; VGA topology; bandwidth 7.6 GHz; gain 7.8 dB; linear digital variable gain amplifier topology; mismatched quadrature inputs compensation; phase shifting range; size 0.13 mum; wideband Cartesian phase rotator; wideband linear digital phase rotator; word length 10 bit; Bandwidth; CMOS process; Circuit topology; Crosstalk; Narrowband; Phase shifters; Phased arrays; Uncertainty; Voltage; Wideband;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405821
