Miniaturized 20 GHz CPW quadrature coupler using capacitive loading

R. Shavit, S. Levy

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


This paper describes coplanar waveguide (CPW) quadrature couplers that utilize metal-insulator-metal (MIM) capacitors at each corner, eliminating the need for air bridges and significantly reducing the coupler footprint. A 20 GHz coupler on high-resistivity silicon with branch lengths of 40° (660 μm) is presented-the area is 80% smaller than a conventional design. A measured insertion loss of ∼4.5 ± 0.5 dB was achieved at 20 GHz.

Original languageEnglish
Pages (from-to)3-5
Number of pages3
JournalMicrowave and Optical Technology Letters
Issue number1
StatePublished - 5 Jul 2001


  • Capacitive loading
  • Coplanar waveguide
  • Quadrature coupler
  • Thin-film capacitor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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