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Characteristic impedance of a microstrip line with a dielectric overlay.
- Source :
-
COMPEL . 2013, Vol. 32 Issue 6, p1855-1867. 13p. - Publication Year :
- 2013
-
Abstract
- Purpose – The purpose of this paper is to present an analytical expression for the characteristic impedance of a microstrip line in presence of a dielectric cover. Design/methodology/approach – Assuming a quasi-TEM propagation mode, a rigorous conformal mapping based on the Schwarz-Christoffel transformation is employed to derive the equivalent capacitance model, which can then be applied to derive a closed analytical expression for the effective permittivity and the characteristic impedance of the line. Findings – Such a formulation is not limited to the case of a single cover layer, but an arbitrary number of electric overlays can be considered as well. Comparisons with published numerical results and full-wave simulations in the case of a single cover layer have been also performed to test the validity of the proposed approach. Originality/value – The new analytical formula for the characteristic impedance of a microstrip line with a single dielectric cover shows better performances compared to the one of closed formulas already presented in the literature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03321649
- Volume :
- 32
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- COMPEL
- Publication Type :
- Periodical
- Accession number :
- 90610910
- Full Text :
- https://doi.org/10.1108/COMPEL-10-2012-0283