A MICROSTRIP MULTIPLE FUNCTION ANTENNA FEED

SCIENTIFIC TECHNOLOGY, INC. IS PROPOSING TO DEVELOP A MULTILAYER MICROSTRIP, CIRCULARLY POLARIZED, MULTIPLE FUNCTION FOCAL POINT FEED FOR MMII DEEP SPACE PROBE HIGH GAIN ANTENNAS. THE FEED WILL PROPERLY ILLUMINATE A 1.47 METER DIAMETER REFLECTOR FOR GENERATING A HIGH GAIN BEAM ANDALSO TO SERVE AS A LOW GAIN ANTENNA. THE LOW GAIN BEAM IS DIRECTED ALONG THE AXIS OF THE HIGH GAIN BEAM AND HAS A WIDESPREAD PATTERN. THE FEED WILL ALSO BE CAPABLE OF BEING SWITCHED TO SIMULTANEOUS TRANSMIT AND RECEIVE IN EITHER HIGHGAIN OR LOW GAIN MODE OF OPERATION, OR TRANSMIT IN HIGH GAIN WHILE RECEIVE IN LOW GAIN. IN PHASE I, SCIENTIFIC TECHNOLOGY, INC. WILL CONDUCT AN ANALYTICAL AND EXPERIMENTAL PROGRAM TO VERIFY THE CONCEPT, AND PROVIDE ALL OF THE DESIGN TOOLS FOR ENGINEERING DEVELOPMENT OF A PROTOTYPE SYSTEM FOR FORBRICATION AND TESTING IN PHASE II.