Electric surface current model for the analysis of microstrip antennas with application to rectangular elements

An approach to the analysis of microstrip antennas which is applicable also to relatively thick substrates using the relevant Green's function is presented. The Green's function is derived and closed form expressions for various antenna characteristics which explicitly take into account th...

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Bibliographic Details
Published in:I.R.E. transactions on antennas and propagation 1985-03, Vol.33 (3), p.301-311
Main Authors: Perlmutter, P., Shtrikman, S., Treves, D.
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Current density
Current distribution
Dielectric materials
Dielectric substrates
Electric resistance
Exact sciences and technology
Green's function methods
Microstrip antennas
Propagation losses
Radiocommunications
Resonance
Surface resistance
Telecommunications
Telecommunications and information theory
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Summary:An approach to the analysis of microstrip antennas which is applicable also to relatively thick substrates using the relevant Green's function is presented. The Green's function is derived and closed form expressions for various antenna characteristics which explicitly take into account the presence of the dielectric material are obtained in terms of the electric surface current density. For rectangular microstrip elements near resonance the current distribution is approximated using lossless transmission line analysis, thus enabling the complete evaluation of the characteristics of the element near resonance. The results obtained in this approach for the radiation resistance, surface wave resistance, radiation pattern, directivity, and bandwidth are presented in a detailed set of graphs for a representative set of parameters.
ISSN:0018-926X
0096-1973
1558-2221
DOI:10.1109/TAP.1985.1143581