Design of 6-Bit 28GHz Phase Shifter in 65NM CMOS

Abstract

This paper presents a 6-bit 28GHz phase shifter in 65nm CMOS technology. The phase shifter is composed of switching-type phase shifters to achieve low power consumption, low insertion loss, and bidirectionality. The relative phase shift varies from 0° to 354.375° with a step of 5.625°. The result of EM simulation shows that the phase shifter has the insertion loss less than 8.63dB over a frequency range of the 26.5 to 29.5GHz. The return loss is smaller than −10.5dB and the RMS phase error is 3.11°. The core size of the phase shifter is $\mathbf{0.38 \times 0.98 mm^2}$