Title :
Feed Systems for array-fed reflector scansar antennas
Author :
Mizzoni, R. ; Orlando, G. ; Ravanelli, R. ; Valle, P.
Author_Institution :
Thales Alenia Space Italia S.p.A, Rome
Abstract :
Dual linearly polarized feed systems illuminating a highly elliptical reflector antenna for scansar instruments are discussed. Linear arrays with elements sharing through reconfigurable beamforming networks (RBFN´s) and/or stacked multimode sectorial horns operated on a single feed per beam basis are examined and compared. The initial design of the preferred solution, based on stacked multimode smoothed wall rectangular feeds is further presented.
Keywords :
array signal processing; beam steering; electromagnetic wave polarisation; horn antennas; linear antenna arrays; multifrequency antennas; radar antennas; reflector antenna feeds; synthetic aperture radar; array-fed elliptical reflector antenna; dual linearly polarized feed system; linear array; reconfigurable beamforming network; scanSAR instrument; smoothed wall rectangular feed; stacked multimode sectorial horn antenna; Antenna arrays; Antenna feeds; Array signal processing; Azimuth; Instruments; Lighting; Linear antenna arrays; Phased arrays; Polarization; Reflector antennas;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
