A 30-88 GHz Phase Shifter with Broadband 90° Hybrid- Marchand Balun Network and Common-base Buffer Achieving 1.34-3.1° RMS Phase Error in 90 nm SiGe

Zheng Liu, Emir Ali Karahan, Kaushik Sengupta

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

To enable a software-defined spectrally agile phased array operation across multiple bands from 30-100 GHz, we present a 30-88 GHz broadband IQ vector modulator phase shifter in 90 nm SiGe. This was enabled by 1) A single-end to differential quadrature phase generator consisting of a compact Marchand balun and 90°hybrid-based bandwidth extension network; 2) A common-base (CB) stage as the input buffer of the IQ VGA. Across the 58 GHz bandwidth, the maximum phase error of the 5-bit phase shifter is below half LSB resolution while achieving rms phase error of 1.34-3.1° and rms gain error of 0.19-0.48 dB. To the best of the authors' knowledge, this is the first phase shifter that covers from 5G FR2 to W band with a fractional bandwidth of 98.3% and demonstrates the best amplitude/phase error over one of the widest bandwidths.

Original languageEnglish (US)
Title of host publication2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1156-1159
Number of pages4
ISBN (Electronic)9798350347647
DOIs
StatePublished - 2023
Event2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 - San Diego, United States
Duration: Jun 11 2023Jun 16 2023

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2023-June
ISSN (Print)0149-645X

Conference

Conference2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
Country/TerritoryUnited States
CitySan Diego
Period6/11/236/16/23

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • 90hybrid
  • common-base
  • IQ vector modulator
  • Marchand balun
  • Phase shifter
  • SiGe
  • ultra-wideband

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