Miniature wideband rat-race coupler in silicon-based integrated passive device technology

You Rong Liu, Chung Hsien Chan, Yo Shen Lin

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

2 Scopus citations

Abstract

In this paper, a novel miniature wideband rat-race coupler design is proposed. The proposed rat-race coupler employs differential bridged-T coils and a phase inverter as building blocks, such that both compact size and wide bandwidth can be achieved at the same time. Specifically, a miniature rat-race coupler for 2.5 GHz application is implemented in silicon-based integrated passive device technology. The circuit size is only 3.275 mm×2.247 mm. The measured to-dB return loss bandwidth for the difference port is larger than 93% while the 15-dB return loss bandwidth is larger than 63%. Very small amplitude and phase errors as well as good isolation performance are also achieved. To the best of our knowledge, the proposed one is the smallest ever reported rat-race coupler with a bandwidth larger than 30%.

Original languageEnglish
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages727-730
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
Country/TerritoryUnited States
CityVirtual, Los Angeles
Period4/08/206/08/20

Keywords

  • Bridged-T coil
  • Integrated passive device
  • Rat-race coupler
  • Ring hybrid

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