A 35 GHz hybrid π-Network high-gain phase shifter with 360° continuous phase shift range

Dong Wei*, Xuan Ding, Hai Yu, Qun Jane Gu, Zhiwei Xu, Yen Cheng Kuan, Shunli Ma, Junyan Ren

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a 35 GHz high-gain phase shifter with 360° continuous phase shift range. To enhance the phase shift range, a hybrid π-network by combining both electrical tuning through capacitors and magnetic tuning through transformers is developed. The phase shift modules are inserted between vertically stacking transistors to realize the embedded phase shifting with the minimum loss. Furthermore, the Gm-stages offer the additional signal gain to suppress attenuation in the phase shifter. The cap-neutralization technology is utilized to further increase the gain and stability. This prototype, fabricated in a 28 nm CMOS process, demonstrates a 360° continuous phase shift and maximum gain of 25.6 dB. It consumes 26 mW power and 1.25 mm × 0.75 mm chin area.

Original languageEnglish
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1311-1314
Number of pages4
ISBN (Electronic)9781728168159
DOIs
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: 4 Aug 20206 Aug 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2020-August
ISSN (Print)0149-645X

Conference

Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
CountryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • Phase shifter
  • Transformer
  • Tunable inductor
  • π-network

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