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A variable gain CMOS phase shifter for phased array antenna applications
Author(s) -
Mitra Dipankar,
Roy Palash,
Dawn Debasis
Publication year - 2017
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.30283
Subject(s) - phase shift module , phased array , variable gain amplifier , beamforming , cmos , antenna (radio) , true time delay , electrical engineering , engineering , antenna gain , electronic engineering , amplifier , radiation pattern , insertion loss , antenna factor , operational amplifier
This letter presents for the first time the development of a variable gain CMOS phase shifter using 0.18 µm CMOS process in the S‐band frequencies to be integrated with conformal phased array beamforming antenna for smart communication radar applications. The vector modulator based phase shifter has an integrated variable gain amplifier codesigned with the phase shifter circuitry in order to be capable of controlling both phase and gain simultaneously which is necessary to recover the degraded radiation pattern due to the conformal shaping of the phased array antenna. The phase shifter achieves measured continuous phase shift of 303° along with measured 7 dB gain control range over 2–2.60 GHz and an insertion loss of 7.12 dB at 2.2 GHz. The measured DC power consumption of the phase shifter is 34.2 mW from a 2 V supply with a smaller chip area of 1.12 mm 2 including all pads. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:324–328, 2017