• DocumentCode
    1473353
  • Title

    Quasi-Arbitrary Phase-Difference Hybrid Coupler

  • Author

    Wong, Yuk Shing ; Zheng, Shao Yong ; Chan, Wing Shing

  • Author_Institution
    Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, China
  • Volume
    60
  • Issue
    6
  • fYear
    2012
  • fDate
    6/1/2012 12:00:00 AM
  • Firstpage
    1530
  • Lastpage
    1539
  • 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.
  • Keywords
    microstrip couplers; waveguide couplers; Butler matrix; interconnecting mismatch losses; microstrip couplers; phase shift elements; quasi-arbitrary hybrid coupler; uniplanar arbitrary phase difference coupler; Bandwidth; Butler matrix; Couplers; Equations; Impedance; Phase shifters; Phased arrays; 3-dB hybrid coupler; Arbitrary phase characteristics; Butler matrix; reflectometer;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/TMTT.2012.2187918
  • Filename
    6171891
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1473353