Radiation characteristics of a patch antenna on a thin PBG substrate

Author

Coccioli, R. ; Deal, W.R. ; Itoh, Takayuki

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

2

fYear

1998

fDate

21-26 June 1998

Firstpage

656

Abstract

A periodically loaded substrate is employed to reduce excitation of surface waves by a patch antenna. The computed dispersion diagram of the substrates shows that surface wave propagation is forbidden along specific directions. By properly orienting the patch antenna on the substrate, this can result in good improvement of antenna performance. In agreement with the expected result, the measured radiation pattern shows a 10 dB reduction in the side lobes associated with power launched from surface waves.

Keywords

antenna radiation patterns; microstrip antennas; microwave antennas; photonic band gap; surface electromagnetic waves; 10.5 GHz; SHF; antenna performance; dispersion diagram; measured radiation pattern; numerical analysis; patch antenna; periodically loaded substrate; photonic bandgap material; radiation characteristics; side lobes reduction; surface wave propagation; surface waves excitation; thin PBG substrate; Antenna measurements; Antenna radiation patterns; Antennas and propagation; Patch antennas; Power measurement; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1998. IEEE

Conference_Location

Atlanta, GA, USA

Print_ISBN

0-7803-4478-2

Type

conf

DOI

10.1109/APS.1998.702023

Filename

702023