Title :
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.
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;
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
DOI :
10.1109/APS.2006.1711613
