A balanced digital phase shifter by a novel switching-mode topology

Yun Wei Lin, Yi Chieh Chou, Chi-Yang Chang

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

A balanced digital phase shifter by a novel switching-mode topology is proposed. A 3-bit balanced digital phase shifter is given as an example, the working bandwidth of which is from 2.3 to 2.7 GHz. The proposed 3-bit balanced phase shifter comprises two balanced loaded-line phase shifters (90° and 45°) and six twist-line broadband 180° phase shifters. The balanced loaded-line digital phase shifter changes phases while the even-or odd-mode signal is excited. The 180° phase shifter controls the balanced signal to be even or odd mode. The commensurate transmission line filter is used as the biasing circuit.

Original languageEnglish
Article number6509995
Pages (from-to)2361-2370
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Volume61
Issue number6
DOIs
StatePublished - 7 May 2013

Keywords

  • Balanced digital phase shifter
  • broadband 180 ° digital phase shifter
  • loaded-line phase shifter
  • switching mode
  • twist-line

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