S-Band Phased Array Telemetry Receiver

Abstract

A phased array receiver operating at S-band has been developed to automatically track a moving telemetry transmitter by electronic beam steering. Each array module consists of an antenna, mixer, IF amplifier and local oscillator. Beam steering is accomplished by a unique method of controlling the output phase of the local oscillator. The antenna beam may be moved in a continuous scan through 120° in azimuth and elevation. Tracking rates as high as 100° per millisecond are achieved with no moving parts.