Compact, Low Loss 4-Bit Ku-band Hybrid Passive Phase Shifter Realized in 0.13-μm SiGe HBT BiCMOS for LEO SATCOM

This paper presents a compact, low loss 4-bit ku-band hybrid passive phase shifter realized in 0.13-μm SiGe HBT BiCMOS for LEO SATCOM. Adopting a different phase shifter unit for each phase state and the proposed quasi-switched-L type phase shifter are both enable to attain low loss and energy-efficient operation in a compact chip size. The design covers 360° with a 22.5° resolution over 14-15 GHz. The insertion loss is 6.2 dB with loss variation of ±1.9 dB. The measured rms phase and amplitude errors are less than 12° and 1.1 dB, respectively, at 14-15 GHz. The core area, excluding all RF input/output and DC testing pad, is 0.46 mm × 0.36 mm