Design of Orthogonally Polarized Feed Horn for Polarimetric Radar Reflector Antenna

Author

Sharma, Satish K. ; Shafai, Lotfollah ; Balaji, Bhashyam ; Pike, Corey ; Damini, Anthony ; Barakat, M.A.

Author_Institution

Dept. of Electr. & Comput. Eng., Manitoba Univ., Winnipeg, Man.

fYear

2006

fDate

9-14 July 2006

Firstpage

4417

Lastpage

4420

Abstract

An orthogonally polarized polarimetric radar feed horn was designed and developed. The radar feed showed 1.20 GHz bandwidth and very low port isolation at X-band frequency and acceptable radiation characteristics. A very complex elliptical aperture feed would be another design option meeting the edge illumination required for the elliptic aperture reflector. When this horn was employed as a feed source for the offset reflector, it showed acceptable radiation characteristics with the peak gain, peak cross-polarization and sidelobe levels of 36.90 dBi, -25 dB and -24 dB, respectively, for the both orthogonally polarized port excitations at 9.75 GHz. The prototype feed horn has been fabricated and was experimentally verified

Keywords

antenna radiation patterns; electromagnetic wave polarisation; horn antennas; radar antennas; reflector antenna feeds; 1.20 GHz; 9.75 GHz; X-band frequency; complex elliptical aperture feed; edge illumination; elliptic aperture reflector; offset reflector; orthogonally polarized feed horn; orthogonally polarized port excitations; peak cross-polarization; peak gain; polarimetric radar reflector antenna; port isolation; radar feed; radiation characteristics; Antenna feeds; Apertures; Bandwidth; Frequency; Horn antennas; Lighting; Polarization; Radar antennas; Radar polarimetry; Reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711613

Filename

1711613