Simulation Results of a Dual-Band and Shaped-Beam Array Feed for an Offset Parabolic Reflector
Junichi Shinohara (1), Naobumi Michishita (1), Yoshihide Yamada (1), Mohammad Tariqul Islam (2) and Norbahiah Misran (2)
(1) National Defense Academy, Japan, (2) Universiti Kebangsaan Malaysia
For a convenient portable earth station, an offset parabolic reflector with an array feed is considered. In this study, abilities of the radiation pattern synthesis by the array feed are investigated. Here, a simple dual band array feed is developed. Exact radiation characteristics are obtained with electromagnetic simulations. As a result, almost uniform aperture distribution is achieved by radiation pattern synthesis of a simple array feed. Moreover, array feed configuration of very low mutual coupling between dual frequency feeds is clarified. Finally, from the radiation patterns of the reflector antenna, high antenna gains and low spillover levels are ensured.
ISAP
2011
October
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