Quad-Ridge Horn Antenna With Elliptically Shaped Sidewalls

Author

Jacobs, O.B. ; Odendaal, Johann W. ; Joubert, Johan

Author_Institution

Dept. of Electr., Univ. of Pretoria, Pretoria, South Africa

Volume

61

Issue

6

fYear

2013

fDate

6/1/2013 12:00:00 AM

Firstpage

2948

Lastpage

2955

Abstract

We present a quad-ridge horn antenna as a feed for a reflector antenna for use in radio astronomy applications. The antenna uses elliptically shaped sidewalls to limit the variation of beamwidth over a wide frequency range and to obtain greater radiation pattern rotational symmetry. The antenna is dual-polarized and matched over more than a 4:1 bandwidth. A design procedure is presented and a prototype designed according to this procedure is shown. Measured and simulated results of the prototype agree with each other well. The antenna is analyzed with a prime focus reflector to determine the range of efficiencies that can be expected.

Keywords

antenna feeds; antenna radiation patterns; horn antennas; radioastronomy; reflector antennas; antenna feed; elliptical shaped sidewall; quad-ridge horn antenna; radiation pattern rotational symmetry; radio astronomy applications; reflector antenna; Antenna feeds; Antenna measurements; Antenna radiation patterns; Apertures; Horn antennas; Reflector antennas; Antenna feeds; broadband; horn antennas; radio astronomy; reflector antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2013.2254436

Filename

6484906