Dual-Band Vector-Sum Phase Shifter for Q/V-Band SATCOM

This paper presents a dual-band vector-sum phase shifter for satellite communication, implemented in 130-nm SiGe BiCMOS technology. The circuit supports 360° phase shifting in the Q- and V-band, specified as 37–43 GHz and 54–59 GHz, respectively, with a 20° phase resolution. The average measured gain after digital calibration is –2.1 dB at 40 GHz and –3.7 dB at 56 GHz. The phase shifter exhibits an amplitude RMS error below 0.5 dB and a phase RMS error below 2.5°. The circuit dissipates 57 mW of power excluding bias network and achieves an IIP3 of better than 8 dBm. The phase shifter occupies 0.073 mm2 of the IC area.