Title :
New shaped subreflector geometry for Cassegrain systems: design and experimental validations
Author :
Floreani, M.G. ; Gandelli, A. ; Zich, R.E. ; Pirinoli, P. ; Aulisio, G.
Author_Institution :
Dipartimento di Elettrotecnica, Politecnico di Milano, Italy
Abstract :
A new shaped subreflector geometry for a Cassegrain system is presented. The idea is to deform the classical hyperboloidal surface to reduce the spillover and the cross-polarization. The high gain antenna obtained can be used as a test antenna to detect external noises or to reduce the cross-polarization in a telecommunication system. Experimental validations confirm the excellent results obtained for a 60 cm antenna/80 mm subreflector system in the frequency range between 37 and 40 GHz. Different types of antennas have been designed and are now produced
Keywords :
antenna radiation patterns; electromagnetic wave polarisation; millimetre wave antennas; reflector antennas; 37 to 40 GHz; 60 cm; 80 mm; Cassegrain systems; EHF; MM-wave antenna; cross-polarization reduction; high gain antenna; shaped subreflector geometry; spillover reduction; Apertures; Diffraction; Feeds; Frequency; Geometry; Noise reduction; Noise shaping; Optical surface waves; Polarization; System testing;
Conference_Titel :
Microwave Conference, 2000 Asia-Pacific
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6435-X
DOI :
10.1109/APMC.2000.926104
