An E-band Subradix Active Phase Shifter With < 0.69° RMS Phase Error and 16-dB Attenuation in 28-nm CMOS

Kailong Zhao, Liang Qiu, Jiangbo Chen, Qianyi Dong, Yen Cheng Kuan, Q. Jane Gu, Chunyi Song, Zhiwei Xu

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

1 Scopus citations

Abstract

This paper proposes an E-band active phase shifter, which leverages a subradix-2 gm array to achieve low gain and phase errors. The phase shifter stacks differential couplers for high precision quadrature signals. It employs extensive (215) vector modulation control states provided by the subradix-2 arrangement for high accuracy that is not available in conventional vector modulation (VM) based phase shifters. The proposed E-band phase shifter is fabricated in 28-nm CMOS with a chip area of 0.078 mm2. It provides a 5.625° phase accuracy with root mean square (RMS) phase error of 0.380.69°, and RMS gain error of 0.490.83 dB at 67-79 GHz. In addition, the phase shifter supports 16 dB attenuation range with a 2 dB step. Measurements show it can also provide a 1.4° phase accuracy with RMS phase error of less than 0.77°. The phase shifter consumes 28.5 mW from a 1.2 V supply.

Original languageEnglish
Title of host publication2022 IEEE/MTT-S International Microwave Symposium, IMS 2022
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages145-148
Number of pages4
ISBN (Electronic)9781665496131
DOIs
StatePublished - 2022
Event2022 IEEE/MTT-S International Microwave Symposium, IMS 2022 - Denver, United States
Duration: 19 Jun 202224 Jun 2022

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2022-June
ISSN (Print)0149-645X

Conference

Conference2022 IEEE/MTT-S International Microwave Symposium, IMS 2022
Country/TerritoryUnited States
CityDenver
Period19/06/2224/06/22

Keywords

  • Aeywords Attenuator
  • Millimeter-wave
  • Phase shifter
  • Subradix-2 vector synthesis

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