Title :
Dielectric sphere mounted diel-core plural hybrid mode pyramidal horn
Author_Institution :
Dept. of Electr. Eng., Mankato State Univ., MN, USA
Abstract :
A dielectric sphere mounted diel-core multiflare pyramidal horn supporting plural hybrid modes is superior to the diel-core rectangular horn suggested by E.L. Lier (1990) in terms of lower sidelobe levels. The multimode operation and the diel-core technique will contribute to the low sidelobe and cross-polarization levels at higher directivity, and the technique of sphere mounting will further improve the horn performance with lower sidelobe and cross-polarization and further increased gain. The cross-polarization is reduced by approximately 3 dB due to dielectric sphere mounting. Also, there is a gain enhancement up to 3 dB by sphere mounting.<>
Keywords :
antenna feeders; antenna radiation patterns; dielectric-loaded antennas; horn antennas; cross-polarization; dielectric sphere mounted diel-core multiflare pyramidal horn; feed horns; gain; multimode operation; plural hybrid modes; radiation patterns; sidelobe levels; Adaptive arrays; Antenna feeds; Apertures; Dielectrics; Frequency; Horn antennas; Radar antennas; Reflector antennas; Satellite antennas; Satellite communication;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE
Conference_Location :
Chicago, IL, USA
Print_ISBN :
0-7803-0730-5
DOI :
10.1109/APS.1992.221497
