Title :
Design and measurements of dual-polarized wideband constant-beamwidth quadruple-ridged flared horn
Author :
Akgiray, Ahmed ; Weinreb, Sander ; Imbriale, William
Author_Institution :
Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A quad-ridged, flared horn achieving nearly constant beamwidth and excellent return loss over a 6-1 frequency bandwidth is presented. Radiation pattern measurements show excellent beamwidth stability from 2 to 12 GHz. Measured return loss is >; 10 dB over the entire band and >; 15 dB from 2.5 to 11 GHz. Using a custom physical optics code, system performance of a radio telescope is computed and predicted performance is average 70% aperture efficiency and 10 Kelvin of antenna noise temperature.
Keywords :
antenna radiation patterns; horn antennas; radiotelescopes; antenna noise temperature; dual-polarized wideband constant-beamwidth quadruple-ridged flared horn; frequency 2 GHz to 12 GHz; radiation pattern measurements; radio telescope; temperature 10 K; Antenna radiation patterns; Apertures; Cutoff frequency; Extraterrestrial measurements; Feeds; Loss measurement; Radio astronomy;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.5996483
