Accession Number : AD0781905

Title :   Techniques and Design of Extremely Lightweight Horn Antennas with Low Side Lobes.

Descriptive Note : Technical rept.,

Corporate Author : HARRY DIAMOND LABS WASHINGTON D C

Personal Author(s) : Jones,Howard S. , Jr

Report Date : FEB 1974

Pagination or Media Count : 21

Abstract : Several extremely lightweight prototype electromagnetic horns with low side lobes were designed and fabricated. Those lightweight horns are made by copperplating on low-density, low-loss dielectric foam substrates of a given shape and size. Corrugated walls are incorporated in the E-plane of the horn to eliminate scattering at the edges, thus substantially reducing side lobes and back radiation. Design techniques and dielectric material characteristics are discussed, and performance data of models designed for different frequency bands are illustrated. Results show that these design techniques realize as much as 10 to 1 reductions in weight in comparison with the conventional thick-walled horns. Moreover, the copperplated dielectric-foam horns are efficient, highly directional with good radiation pattern characteristics, and can be made to operate over a reasonably broad bandwidth. (Author)

Descriptors :   *Horn antennas, Lightweight, Microwave antennas, Dielectrics, Foam, Copper, Plating, X band, S band

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE