A Single Channel Monopulse Antenna with Low Effective Sidelobes

Abstract

This paper describes a CSC² single axis tracking antenna using a single channel monopulse antenna which has improved sidelobe performance over conventional single channel monopulse antennas. Effective sidelobes of the composite pattern, measured at the receiver input, greater than 22 dB have been achieved. This is due to a unique feed design. The composite patterns are the true measure of performance for a single channel monopulse system since this is the input to the tracking receiver. The low effective sidelobes result in a significant reduction of multi-path problems.