Title :
A 3.5 GHz phase shifter of high input power range with digitally controlled VGA
Author :
Yan, Tzu-Chao ; Lin, Wei-Zhen ; Kuo, Chien-Nan
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
fDate :
Nov. 30 2011-Dec. 2 2011
Abstract :
A high input power range phase shifter is designed and fabricated on 0.18-μm CMOS technology. With proposed variable gain amplifier in I/Q vector combination based phase shifter, the performance of output signal has been improved. From measured results, the gain variation and phase distortion versus input power of output signal are smaller than 1.5 dB and ±2°, respectively. The minimum DC consumption of core circuit is 15.46 mW from 1.8 V supply voltage.
Keywords :
CMOS integrated circuits; amplification; amplifiers; phase shifters; CMOS technology; I/Q vector combination; digitally controlled VGA; frequency 3.5 GHz; high input power range phase shifter; variable gain amplifier; voltage 1.8 V; CMOS integrated circuits; Gain; Phase distortion; Phase measurement; Phase shifters; Transconductance; Vectors; I/Q vector combination; gain variation; phase distortion; phase shifter;
Conference_Titel :
Radio-Frequency Integration Technology (RFIT), 2011 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0517-5
DOI :
10.1109/RFIT.2011.6141781
