Dispersion characteristics of optically excited coplanar striplines

Comprehensive full-wave analysis

Dhananjay S. Phatak, Nirod K. Das, Nirod Das

Research output: Contribution to journalArticle

Abstract

A comprehensive full-wave formulation to evaluate the dispersion and losses for coplanar striplines on substrates of finite and infinite thicknesses is presented. The loss mechanisms incorporated in the analysis are substrate losses and dielectric material losses. The method of N.K. Das and D.M. Pozar (1987) is generalized to include a complex propagation vector and can be used over a wide frequency range. A large range of line dimensions can also be handled, limits being set by the accuracy of the moment method. Metal losses can also be incorporated into this analysis by applying the appropriate boundary conditions for lossy metal. Analytically, the excitation of substrate modes is shown to correspond to the occurrence of the poles of the Green's function in the reaction integrals. Results of the full-wave analysis are in good agreement with those obtained by established theory.

Original languageEnglish (US)
Pages (from-to)1719-1730
Number of pages12
JournalIEEE Transactions on Microwave Theory and Techniques
Volume38
Issue number11
DOIs
StatePublished - Nov 1990

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Substrates
Method of moments
Metals
Green's function
metals
Poles
poles
Green's functions
frequency ranges
Boundary conditions
occurrences
boundary conditions
moments
formulations
propagation
excitation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Dispersion characteristics of optically excited coplanar striplines : Comprehensive full-wave analysis. / Phatak, Dhananjay S.; Das, Nirod K.; Das, Nirod.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 38, No. 11, 11.1990, p. 1719-1730.

Research output: Contribution to journalArticle

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