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Quasi-arbitrary phase-difference hybrid coupler

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

Previous hybrid couplers have output phase difference that have either been 0°, 90°, or 180°. Other phase differences could only be realized using additional phase-shift elements. This increased circuit size and cost, and also degraded overall performance due to interconnecting mismatch losses. The proposed uniplanar arbitrary phase-difference coupler eliminates these additional components, thereby maintaining small size and good performance. Theoretical analysis is presented here together with measured results for two microstrip couplers for verification. © 2012 IEEE.
Original languageEnglish
Article number6171891
Pages (from-to)1530-1539
JournalIEEE Transactions on Microwave Theory and Techniques
Volume60
Issue number6 PART 1
DOIs
Publication statusPublished - 2012

Research Keywords

  • 3-dB hybrid coupler
  • Arbitrary phase characteristics
  • Butler matrix
  • reflectometer

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