Characterizing reflector-feed interaction for parabolic reflector antennas

Radio telescopes are quite often used for astronomy. Since these telescopes are wideband systems, they encounter standing waves between the reflector and the feed. This interaction has been studied by investigation the radar cross section (RCS) of the feed and the effect the standing waves have on the antenna performance (gain and beamwidth).

Design of a wideband conformal array antenna system with beamforming and null steering, for application in a DVB-T based passive radar

The use of radars in detecting low flying, small targets is being explored for several decades now. However radar with counter-stealth abilities namely the passive, multistatic, low frequency radars are in the focus recently. Passive radar that uses Digital Video Broadcast Terrestrial (DVB-T) signals as illuminator of opportunity is a major...