A WIDEBAND CMOS PHASE SHIFTER WITH A PHASE TUNING BIT FOR Ku-BAND MOBILE SATELLITE COMMUNICATION

摘要

This article presents a Ku-band switched path type phase shifter in a standard 0.13 μm CMOS technology. The phase shifter consists of phase shifting filter networks, DPDT and SPDT switches, a tuning bit, and digital control logic. The phase coverage of the phase shifter is 354° with the LSB of 5.625°. The measured insertion loss is less than 16 dB. The input and output return losses are more than 12 dB. The RMS phase error and amplitude variation are less than 7.6° and 0.3 dB at 10.7-15 GHz, respectively. When the tuning bit is activated, the RMS phase error of 6.3 and the RMS amplitude variation of 0.4 dB are achieved at 10.7-15 GHz. The input P1dB over ～11 dBm is achieved at 10-15 GHz. The current consumption is nearly zero with 1.2 V supply voltage. The chip size is 1.46 × 0.82 mm~2 including pads.