A Three-Bit Monolithic Phase Shifter at V-Band

This paper describes the design and performance of a three-bit monolithic phase shifter at V-band. The selected circuit approach was a reflection phase shifter with switched delay lines. Schottky diodes were used as the switching elements. Tested at 62.5 GHz, the RMS phase error was 2.7°, the insertion loss 10.8 +- 1.8 dB (including fixture loss), and the VSWR was better than 2.1:1. The maximum DC power requirement was 40 mW.