Monopulse array system with air-stripline multi-port network

摘要

A monopulse radar array system comprises a plurality of radiating elements and a multi-port monopulse feed network coupled to said plurality of radiating elements and comprising a sum feed network assembly (100) having a sum I/O-port (52) connected to a plurality of sum output ports (205) by a sum feed circuit. Further provided is a difference feed network assembly (110) having a difference I/O-port (54) connected to a plurality of difference output ports (210) by a difference feed circuit. A plurality of coupler devices (120) is provided, each said coupler device having a coupler sum port ( SIGMA ), a coupler difference port ( DELTA ) and first and second sidearm ports (56). Interconnection means (130) interconnect said plurality of sum output ports (205) of said sum feed network assembly (100) to a corresponding coupler sum port ( SIGMA ) and interconnect said plurality of difference output ports (210) of said difference feed network assembly (110) to a corresponding coupler difference port ( DELTA ). First and second means couple said first and second coupler sidearm ports (56) to a first and second set of said radiating elements, respectively.