Title :
A 0.75–2.67 GHz 5-bit vector-sum phase shifter
Author :
Tzu-Chao Yan ; Wei-Zhen Lin ; Chien-Nan Kuo
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao-Tung Univ., Hsinchu, Taiwan
Abstract :
A 5-bit active vector-sum phase shifter operated in 0.75-2.67 GHz is implemented in 0.18-μm CMOS technology. A tunable RC quadrature all-pass filter and a resistor-string VGA are proposed for quadrature phase generation and magnitude ratio tuning, respectively. The chip size is 0.89 mm2. The DC power consumption of core circuit is 6.39 mW from 1.8 V supply. The RMS magnitude error and RMS phase error are below 0.74 dB and 7.2 degrees.
Keywords :
CMOS analogue integrated circuits; RC circuits; all-pass filters; amplifiers; circuit tuning; mean square error methods; phase shifters; CMOS technology; DC power consumption; RMS magnitude error; RMS phase error; core circuit; frequency 0.75 GHz to 2.67 GHz; magnitude ratio tuning; power 6.39 mW; quadrature phase generation; resistor-string VGA; size 0.18 mum; tunable RC quadrature all-pass filter; variable gain amplifier; voltage 1.8 V; word length 5 bit; CMOS integrated circuits; CMOS technology; Gain; Microwave filters; Phase shifters; Tuning; Vectors; RC quadrature all-pass filter; phase shifter; resistor-string variable gain amplifier; vector-sum;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2013 European
Conference_Location :
Nuremberg
