A circular horn with dielectric coated flange

Author

Ittipiboon, A. ; Shafai, L. ; Bridges, E.

Author_Institution

Dept. of Electrical Engng., Univ. of Manitoba, Winnipeg, Man., Canada

Volume

7

Issue

3

fYear

1982

fDate

7/1/1982 12:00:00 AM

Firstpage

13

Lastpage

17

Abstract

The similarity of a horn with corrugated flange and a horn with dielectric coated flange is discussed. Radiation characteristics of a circular horn with dielectric coated flange excited by a circular guide is then investigated experimentally. It is found that by a proper selection of the various elements-the waveguide radius, the distance from the waveguide aperture to the dielectric surface, the airgap thickness and the size of the flange-the E and H plane radiation patterns, the side and back lobe radiations and the bandwidth of the antenna can be controlled. These characteristics are found to be very similar to those obtained from a circular horn with corrugated flange. Some experimental data is given, as well as discussion of the usefulness of this antenna as a feed for paraboloidal reflectors.

Keywords

antenna radiation patterns; waveguide antennas; H plane radiation patterns; E plane; airgap; antenna; aperture; circular guide; circular horn; dielectric coated flange; paraboloidal reflectors; waveguide radius; Corrugated surfaces; Dielectrics; Feeds; Flanges; Surface impedance; Surface treatment; Surface waves;

fLanguage

English

Journal_Title

Electrical Engineering Journal, Canadian

Publisher

ieee

ISSN

0700-9216

Type

jour

DOI

10.1109/CEEJ.1982.6593971

Filename

6593971