DocumentCode :
1089527
Title :
Full 360 ^{\\circ } Vector-Sum Phase-Shifter for Microwave System Applications
Author :
Zheng, You ; Saavedra, Carlos E.
Author_Institution :
Queen´´s Univ., Kingston, ON, Canada
Volume :
57
Issue :
4
fYear :
2010
fDate :
4/1/2010 12:00:00 AM
Firstpage :
752
Lastpage :
758
Abstract :
An innovative vector-sum phase shifter with a full 360?? variable phase-shift range is proposed and experimentally demonstrated in this paper. It employs an active balun and a very high-speed CMOS operational transconductance amplifier (OTA) integrator to generate the four quadrature basis vector signals. The fabricated chip operates in the 2-3 GHz, it exhibits an average insertion gain of 1.5 dB at midband, and has an RMS phase error below 5?? over the measured frequency span. The chip consumes 24 mW of DC power and is highly compact, measuring only 0.38 mm2 including bonding pads.
Keywords :
CMOS analogue integrated circuits; MMIC amplifiers; MMIC phase shifters; baluns; operational amplifiers; OTA integrator; active balun; bonding pads; fabricated chip; frequency 2 GHz to 3 GHz; gain 1.5 dB; innovative vector-sum phase-shifter; microwave system applications; power 24 mW; very high-speed CMOS operational transconductance amplifier; Active balun; differential amplifier; integrated circuit; microwave circuits; phase shifter; quadrature generation;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2009.2025851
Filename :
5089459
Link To Document :
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