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Analysis of Faceted-Reflector Antenna  

Kwak, Chang-Soo (한국전자통신연구원 무선RF탑재기술연구팀)
Uhm, Man-Seok (한국전자통신연구원 무선RF탑재기술연구팀)
Yom, In-Bok (한국전자통신연구원 무선RF탑재기술연구팀)
Publication Information
Journal of Satellite, Information and Communications / v.5, no.2, 2010 , pp. 34-39 More about this Journal
Abstract
Due to big demand for satellite and communication service using personal handheld terminals, demand for satellites with huge antennas is increasing correspondingly. While such large antennas are realized by various types of deployable antennas, the reflecting surface is made by many facets irrespective of deploying mechanisms. In order to analyze the faceted-reflector more accurately, an existing ray-tracing method is improved. The algorithm allows the rays to cross each other, which is the main characteristic of the faceted-reflector, and takes unevenness of amplitude and phase over the aperture plane into consideration. For the study of the effect of facet configuration, facet generating algorithm is devised. From the analysis algorithm and the facet-generating algorithm, it has been found that the number of facets in a radial direction affects both directivity and sidelobe level. On the other hand, the number of facets in a circumferential direction affects sidelobe level only.
Keywords
faceted-reflector antenna; deployable antenna; ray-tracing; satellite communications;
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  • Reference
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