Analysis for MM/GTD of circularly polarized dual beam antennas

Author

Kawakami, H. ; Sato, G.

Author_Institution

Fac. of Sci. & Technol., Sophia Univ., Bulgaria

fYear

1991

fDate

24-28 June 1991

Firstpage

1328

Abstract

Consideration is given to a monopole antenna with a planar finite reflector and especially with a disk reflector made of a perfect conductor. A hybrid analysis method consisting of the moment method and geometrical theory of diffraction (MM/GTD) is used to calculate the effects of antenna reflectors, especially those of the edge of a circular finite reflector, on the input impedance and directivity of the antenna system, and experiments on several examples of such a system are performed. Assuming the direction and number of elements of the monopole antenna to be arbitrary values, the effects of diffractions due to the reflector´s edges are considered on the basis of the GTD.<>

Keywords

antennas; electromagnetic wave diffraction; electromagnetic wave polarisation; GTD; MM; antenna reflectors; antenna system; circular finite reflector; circularly polarized dual beam antennas; directivity; disk reflector; geometrical theory of diffraction; hybrid analysis method; input impedance; moment method; monopole antenna; perfect conductor; planar finite reflector; Antenna theory; Conductors; Directional antennas; Directive antennas; Impedance; Moment methods; Performance analysis; Physical theory of diffraction; Polarization; Reflector antennas;

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.1991.175094

Filename

175094