Accession Number : ADP003409

Title :   The Mechanical Design of a High-Power, Dual Frequency, Millimeter-Wave Antenna Feed System,


Personal Author(s) : Moldovan,N.

Report Date : MAR 1984

Pagination or Media Count : 16

Abstract : This paper describes the mechanical design and fabrication of a high power, dual-frequency, millimeter-wave feed system. The feed system consists of a 35 GHz circularly polarized monopulse subsystem and a 95 GHz circularly polarized feed. The 35 GHz feed is designed to handle 5.0 kW average and 50 kW peak power and the 95 GHz 1.2 kW average and 12 kW peak power. A Frequency Selective Surface (FSS) is incorporated to provide dual frequency capability. Each feed is liquid cooled to provide suitable cooling during high power operation. The two feeds and FSS assembly are mounted in a supporting space frame to provide an optically integral assembly ready to be mounted at the vertex of a reflector. The paper addresses three main areas: the general feed design, which includes the manufacturing processes, flange considerations and waveguide cooling; the FSS fabrication; and beam alignment for both the primary and secondary field. (Author)

Descriptors :   *Antenna feeds, *Millimeter waves, High power, Dual mode, Frequency

Distribution Statement : APPROVED FOR PUBLIC RELEASE