A SiGe 92–96 GHz 5-bit Active Phase Shifter for W-Band Phased Arrays

A 5-bit vector modulator type phase shifter is presented in 0.13-μm SiGe technology for W-band phased arrays. A 90° hybrid is applied to divide the input signal into quadrature. Four orthogonal signals are vector synthesized through VGAs, utilizing current steering technology. Through simulation, the RMS phase error of the proposed phase shifter is 2.59° - 2.85° at 92–96 GHz. The simulated average gain is -0.79-1.69dB, while the RMS gain error is 1.82–1.94 dB. The core part of the circuit occupies an area of 0.64 mm × 0.42 mm.