Microstrip antenna on a spherical surface

Author

Lima, A.C.d.C. ; Descardeci, J.R. ; Giarola, A.J.

Author_Institution

Sch. of Electr. Eng., State Univ. of Campinas, Brazil

fYear

1991

fDate

24-28 June 1991

Firstpage

820

Abstract

A cavity model with magnetic sidewalls is used for the analysis of a microstrip antenna on a spherical surface. Expressions for the fields in the cavity and for the calculation of the resonant frequency are obtained for each of the operating modes. The input impedance for the cavity fed by a coaxial line through its ground conducting spherical surface is obtained using a procedure similar to that presented by K.M. Luk et al. (1989). The fields radiated by the antenna are obtained by using dyadic Green´s functions, and by replacing the cavity by its equivalent magnetic current existing at the side wall of the cavity. Numerical results are presented.<>

Keywords

Green´s function methods; antenna radiation patterns; antenna theory; electric impedance; microstrip antennas; cavity model; dyadic Green´s functions; equivalent magnetic current; input impedance; magnetic sidewalls; microstrip antenna; numerical results; radiation pattern; resonant frequency; spherical surface; Coaxial components; Equations; Geometry; Green´s function methods; Magnetic analysis; Magnetic resonance; Microstrip antennas; Resonant frequency; Shape; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.174970

Filename

174970