60GHz passive and active RF-path phase shifters in silicon

Abstract

Integrated 60-GHz active and passive phase shifters for RF-path phase-shifting phased array transceivers are demonstrated in this paper. The reflection-type passive phase shifter achieves >180° phase variation across the 57GHz-64GHz band with insertion loss varying from 4.2dB-7.5dB at 60GHz. The active phase shifter employs vector-interpolation architecture and achieves 360° phase variation, -2dB gain, 12GHz 3dB bandwidth and 16.5dB noise figure at 60GHz. Measurements over process and temperature are also discussed and comparisons are drawn between active and passive phase shifting approach for 60GHz phased arrays. © 2009 IEEE.