Techniques and Design of Extremely Lightweight Horn Antennas with Low Side Lobes.
HARRY DIAMOND LABS WASHINGTON D C
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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
- Electrical and Electronic Equipment