A 6-bit 38 GHz SiGe BiCMOS phase shifter for 5G phased array communications

IEICE Electronics Express

Zhiqiang Li¹  Muhamamad M Sarfraz¹  Minghua Wang¹  Xiaosong Wang¹  Yanbin Xiao¹  Haiying Zhang²  Yu Liu² 

[1] Institute of Microelectronics of Chinese Academy of Sciences;University of Chinese Academy of Sciences

关键词: phase shifter;    phased array;    millimeter wave;    BiCMOS;    Ka-band;    5G communications;   

DOI  :  10.1587/elex.14.20170451

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a 6-bit 38 GHz vector-summing phase shifter developed for 5G phased array communications. A linear gain adjustment VGA with modified gain control method is presented and is used in phase shifter for vectors weighting. Combined with a degenerated-Q quadrature all-pass filter (QAF) for accurate I/Q generation, high phase resolution is achieved with easy control and compact size. Fabricated in 0.13 um SiGe BiCMOS process, the phase shifter has a measured average insertion loss of 5.7 dB at 38 GHz center frequency, with −3 dB bandwidth of 12 GHz. The RMS phase and gain errors are less than 1.7° and 1.5 dB respectively across 20–45 GHz frequency range over 64 phase states. The chip has a compact core size of 373 um × 311 um and it consumes 11.2 mA from 3 V supply.

【 授权许可】

CC BY