Reconfigurable 1.5-2.5-GHz phase shifter with 360o relative phase-shift range and reduced insertion-loss variation

Pei-Ling Chi, Chia Ling Huang

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

Abstract

This paper proposes a varactor-based reflection-type phase shifter that allows for 360o relative phase-shift range and reduced insertion-loss variation over the entire frequency tuning range. In particular, a novel and compact reconfigurable 90o coupler is devised and it is, theoretically, able to achieve perfect return loss and isolation at each tuning state. Thus, when this 3-dB coupler is terminated with two reflective loads, the phase shifter can operate at a wide range of center frequencies. Moreover, a tunable transformation network is proposed to optimally reduce the insertion-loss variation within the 360o continuous phase-shift range for any operational frequency. Experimental results show that the fabricated phase shifter, in a frequency range of 1.5-2.5 GHz, can realize 360o relative phase-shift range with greater than 16.5 dB in return loss and less than 3.8 dB in insertion-loss variation.

Original languageEnglish
Title of host publication2017 IEEE MTT-S International Microwave Symposium, IMS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages897-899
Number of pages3
ISBN (Electronic)9781509063604
DOIs
StatePublished - 4 Oct 2017
Event2017 IEEE MTT-S International Microwave Symposium, IMS 2017 - Honololu, United States
Duration: 4 Jun 20179 Jun 2017

Publication series

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

Conference

Conference2017 IEEE MTT-S International Microwave Symposium, IMS 2017
CountryUnited States
CityHonololu
Period4/06/179/06/17

Keywords

  • Insertion-loss variation
  • Phase shifter
  • Reconfigurable
  • Reflection-type
  • Relative phase shift
  • Varactor

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