Approximate versus exact methods in modeling a coaxially excited circular patch antenna

Author

Bliznyuk, N.Y. ; Nosich, Alexander I.

Author_Institution

Inst. of Radiophys. & Electron., Acad. of Sci., Kharkov, Ukraine

Volume

2

fYear

1998

fDate

2-5 Jun 1998

Firstpage

739

Abstract

The fundamental antenna effects of a circular metallic patch antenna on a dielectric substrate backed by a perfectly conducting ground plane and excited by a vertical electrical dipole (VED) are investigated. The solution is numerically accurate in the resonant range due to the sophisticated method used. Resonance conditions are established which maximize the radiation power or efficiency. Criteria are determined for material properties and dimensions, for which surface waves are nearly eliminated and the radiation efficiency approaches 100 percent. Comparison with a magnetic ring model (MRM) for the thin substrates is given

Keywords

antenna radiation patterns; approximation theory; dipole antennas; integral equations; microstrip antennas; resonance; antenna effects; circular metallic patch antenna; coaxially excited circular patch antenna; dielectric substrate; far field radiation patterns; integral equations; magnetic ring model; material dimensions; material properties; perfectly conducting ground plane; radiation efficiency; radiation power; resonance conditions; resonant range; surface waves; vertical electrical dipole; Coaxial components; Dielectric substrates; Dipole antennas; Finite wordlength effects; Integral equations; Magnetic resonance; Moment methods; Patch antennas; Symmetric matrices; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Mathematical Methods in Electromagnetic Theory, 1998. MMET 98. 1998 International Conference on

Conference_Location

Kharkov

Print_ISBN

0-7803-4360-3

Type

conf

DOI

10.1109/MMET.1998.709875

Filename

709875