A mm-wave RC PPF Quadrature Network with Gain Boosting in 22nm CMOS FDSOI

Abstract

A wide-band, passive, and compact RC PPF quadrature network has been implemented in 22nm CMOS FDSOI technology for mm-wave phase shifters of 5G phased arrays or quadrature LO generation and image rejection in mm-wave heterodyne receivers. This paper presents the design procedure and the analysis of the proposed structure that uses a completely passive gain boast approach to enhance the insertion loss while maintaining the good features of the conventional RC PPF quadrature networks. The quadrature network shows measured quadrature phase error of < 2.5± at 24–40 GHz, the amplitude mismatch of < 0.2 dB at 24–40 GHz and the mean gain is $\boldsymbol{-1}\sim$ -4 dB at 30–40 GHz. The proposed quadrature network does not consume any DC power, and the chip area is $\boldsymbol{330} \mu \mathbf{m} \times \boldsymbol{240} \mu\mathbf{m}$.