Circular Quadruple-Ridged Flared Horn Achieving Near-Constant Beamwidth Over Multioctave Bandwidth: Design and Measurements

被引：95

作者：

Akgiray, Ahmed ^{[1
]}

Weinreb, Sander ^{[1
]}

Imbriale, William A. ^{[2
]}

Beaudoin, Christopher ^{[3
]}

机构：

[1] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA

[2] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[3] MIT, Haystack Observ, Westford, MA 01886 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2013年 / 61卷 / 03期

基金：

美国国家科学基金会; 美国国家航空航天局;

关键词：

Aperture antennas; horn antennas; radio astronomy; reflector antenna feeds; reflector antennas; ridge waveguides; ultrawideband antennas;

D O I：

10.1109/TAP.2012.2229953

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A circular quadruple-ridged flared horn achieving almost-constant beamwidth over 6:1 bandwidth is presented. This horn is the first demonstration of a wideband feed for radio telescopes which is capable of accommodating different reflector antenna optics, maintains almost constant gain and has excellent match. Measurements of stand-alone horn performance reveal excellent return loss performance as well as stable radiation patterns over 6:1 frequency range. Physical optics calculations predict an average of 69% aperture efficiency and 13 K antenna noise temperature with the horn installed on a radio telescope.

引用

页码：1099 / 1108

页数：10

共 33 条

[1] Design of Broadband Constant-Beamwidth Conical Corrugated-Horn Antennas [J].