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An offset dual shaped reflector with 84.5 percent efficiency

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1 Author(s)
A. Cha ; Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA, USA

The theoretical and experimental study of a 1.5 m offset dual shaped reflector at 31.4 GHz is summarized. An efficiency of 84.5 percent, a possible record for reflector antennas of this size, was ascertained through careful measurements. For larger low noise reflector systems, a 2 to 3 dB improvement in gain over noise temperature ratio (G/T) performance over the state-of-the-art ultralow noise ground stations and 90 percent or better aperture efficiency now appear feasible.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:31 ,  Issue: 6 )