Iranian Journal of Electrical and Electronic Engineering (Mar 2015)

Using a VIA-Less CRLH Transmission Line to Design Compact Wilkinson Power Dividers and Rat-Race Couplers

  • H. Rahmanian,
  • S. H Sedighy,
  • M. Khalaj Amirhosseini

Journal volume & issue
Vol. 11, no. 1
pp. 1 – 7

Abstract

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A method for design and implementation of a compact via-less Composite Right/Left-Handed Transmission Line (CRLH TL) is presented. By introducing a new circuit model, the CRLH transmission line behavior is studied versus the parameters variations to achieve the desired characteristic impedance and electrical length. Then a compact quarter wavelength CRLH transmission line with 70 Ω characteristic impedance is designed as an example. Finally a very compact four way Wilkinson power divider and a rat-race coupler are designed and fabricated by using this type of CRLH TL which exhibit about 75% and 80% compactness, respectively.

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