Moment method analysis of rectangular microstrip antennas on spherical structures

Author

Sipus, Zvonimir ; Burum, Niksa ; Bartolic, Juraj

Author_Institution

Fac. of Electr. Eng. & Comput., Zagreb Univ., Croatia

Volume

3A

fYear

2005

fDate

3-8 July 2005

Firstpage

126

Abstract

The interest for spherical arrays is based on their possibility to direct single or multiple beams through a complete hemisphere. Arrays of rectangular microstrip patches embedded in a multilayer spherical structure are analyzed using the spectral-domain approach and the moment method. In order to avoid numerical problems a modified vector-Legendre transformation and normalized Legendre polynomials are defined and applied to the solution procedure. The influence of structure radius on the input impedance and the resonant frequency of the spherical rectangular microstrip patch antenna are studied. A laboratory model is built to test different configurations of patches and to validate the calculated results.

Keywords

Legendre polynomials; antenna theory; method of moments; microstrip antenna arrays; multilayers; vectors; input impedance; modified vector-Legendre transformation; moment method analysis; multilayer spherical structure; normalized Legendre polynomials; rectangular microstrip antennas; rectangular microstrip patches; resonant frequency; spectral-domain approach; spherical arrays; spherical structures; structure radius; Impedance; Laboratories; Microstrip antenna arrays; Microstrip antennas; Moment methods; Nonhomogeneous media; Patch antennas; Polynomials; Resonant frequency; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1552193

Filename

1552193