A study of annular ring patch microstrip antenna shorted at the outer periphery

Author

Lin, Y. ; Shafai, L.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man., Canada

fYear

1990

fDate

7-11 May 1990

Firstpage

354

Abstract

The input impedance, resonant frequency, and radiation characteristics of the annular ring patch microstrip antennas shorted at the outer periphery are studied. Analytic results for the dominant and higher-order modes are compared with experimental data and previous results. The radiation conductance, the fringing field, and the effect of feed position, i.e., a coaxial probe, are included in the analysis. Two antennas, A and B, were fabricated and tested. Their calculated resonant frequencies for the TM/sub 11/ mode are 2.174642 GHz and 3.143697 GHz for model A and model B, respectively, which agree well with the measured ones, 2.19913 GHz and 3.15452 GHz, respectively.<>

Keywords

antenna radiation patterns; electric impedance; microstrip antennas; 2.19913 GHz; 3.15452 GHz; SHF; UHF; annular ring patch microstrip antenna; dominant modes; feed position; fringing field; higher-order modes; input impedance; outer periphery; radiation characteristics; radiation conductance; resonant frequency; shorting; Admittance; Apertures; Bandwidth; Boundary conditions; Conductors; Dielectric losses; Impedance; Magnetic resonance; Magnetic separation; Microstrip antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.

Conference_Location

Dallas, TX, USA

Type

conf

DOI

10.1109/APS.1990.115120

Filename

115120