Analysis of the disk-loaded spherical annular-ring microstrip antenna

Author

Hong-Twu Chen ; Yuan-Tung Cheng

Author_Institution

Dept. of Electr. Eng., Chinese Mil. Acad., Fong-Shan, Taiwan

Volume

1

fYear

1996

Firstpage

692

Abstract

It has been found that, by combining several patches with similar resonant frequencies on the same or different layers of the microstrip structure, the antenna bandwidth can be broadened. The disk-loaded spherical annular-ring microstrip antenna is analysed using a full-wave analysis and a moment-method calculation. The antenna is excited by a coaxial probe. Numerical results of the input impedance and voltage standing wave ratio (VSWR) are presented. The related numerical results of the single patch case are plotted for comparison. The radiated fields and the cross-polarization characteristics are also calculated and discussed.

Keywords

antenna radiation patterns; electric impedance; electromagnetic wave polarisation; loop antennas; method of moments; microstrip antennas; VSWR; antenna bandwidth; coaxial probe; cross polarization characteristics; disk loaded microstrip antenna; full wave analysis; input impedance; microstrip structure; moment method; numerical results; radiated fields; resonant frequencies; spherical annular ring microstrip antenna; voltage standing wave ratio; Antenna theory; Bandwidth; Coaxial components; Current density; Impedance; Microstrip antennas; Permittivity; Probes; Resonance; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1996. AP-S. Digest

Print_ISBN

0-7803-3216-4

Type

conf

DOI

10.1109/APS.1996.549690

Filename

549690