MIC Front End for an I Band Monopulse Airborne RADAR

This paper describes a new way to realize a complete monopulse receiver for an airborne RADAR in a very compact microwave assembly; then a unique package contains all microwave components joining aerial to IF receiver. Thin fim technique on alumina substrate is employed in each integrated RF circuit; FET amplifiers realized in MIC techniques are used to reduce noise figure. The required and obtained electrical performances are consistent with the typical specifications of a muItifunction airborne RADAR.