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High Aperture Efficiency nat Antenna using Annular Ring Resonators and Radial Waveguide feeder Network  

Jeong, Ki-Hyeok (광운대학교 전자공학과 마이크로파 연구실)
Ra, Keuk-Hwan (광운대학교 전자공학과 마이크로파 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.8A, 2005 , pp. 688-696 More about this Journal
Abstract
An antenna was designed and manufactured for the DBS receiver system. This antenna is a planar or flat antenna which shows many advantages over the conventional parabolic antenna such as higher aperture efficiency, easier installation and improved aesthetics to name a few. The antenna is a novel design employing microstrip annular ring resonating antenna elements and a radial waveguide feeder network. The LNB(Low Noise Blockdown Converter) is can integrate with the antenna iしt the back of the radial waveguide. The 35cm diameter antenna works at 31.8dBi minimum gain which implies an aperture efficiency of around $80\%$.
Keywords
Flat Antenna; Koreasat; Annular Ring; LHCP; Microstrip;
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