Authors: Matthew R. Morin, Zhenchao Yang, and Karl F. Warnick
Source: FERMAT, Volume 6,Article 2, Nov._Dec., 2014
Abstract: Reflector antennas for terrestrial satellite communications terminals typically employ horn-type feeds, but the size and weight of these systems can be reduced by using compact, planar feed antennas. Planar antennas can readily achieve high quality linear polarization, but surprisingly few planar or quasiplanar designs are available for dual circular polarization (CP). To meet this need, a compact dual circularly polarized feed antenna for reflector applications is presented. The antenna uses low-profile dipoles arranged in an “eleven” arrangement over an electromagnetic band gap (EBG) surface. Simulated and measured results demonstrate that the antenna realizes high quality dual CP performance while simultaneously achieving high isolation between ports.
Index Terms: low profile antennas, dual CP antennas, SatCom dish feed antennas
View PDFCompact Dual Circularly Polarized “Eleven” Feed over EBG for Reflector Antennas