Simple and accurate dispersion expression for the effective dielectric constant of coplanar waveguides
Journal article, 1997

A conformal mapping based analytic formula is proposed for computation of the frequency dependent effective dielectric constant, ɛeff, of coplanar waveguides (CPW). This formula is correct in a wide frequency band and for wide range of CPW parameters, and models both negative and positive slopes in the frequency dependence of ɛeff. The results are especially useful for modeling microwave/millimetrewave and ultrahigh speed digital interconnects.


dispersion (wave)

coplanar waveguides

waveguide theory


Spartak Gevorgian

Department of Microelectronics and Nanoscience

Torsten Martinsson

Department of Microwave Technology

Anatoli Deleniv

Erik Kollberg

Department of Microwave Technology

Irina Vendik

IEE Proceedings: Microwaves, Antennas and Propagation

1350-2417 (ISSN) 1359-706X (eISSN)

Vol. 144 2 145-148

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

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