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Elliptically Shaped Quad-Ridge Horn Antennas as Feed for a Reflector

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3 Author(s)
Jacobs, O.B. ; Dept. of Electr. Electron. & Comput. Eng., Univ. of Pretoria, Pretoria, South Africa ; Odendaal, J.W. ; Joubert, J.

Quad-ridge horn antennas of various geometries are considered as possible candidates for a wideband reflector antenna feed. It is demonstrated that shaping the sidewalls of the ridge horns significantly improves the radiation characteristics of the horns. The conical quad-ridge horn with an elliptically shaped sidewall shows the most promise as a wideband reflector antenna feed. The radiation patterns are rotationally symmetric, and the 10-dB beamwidth is reasonably constant over a wide frequency range.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:10 )