2006•The Journal of Korean Institute of Electromagnetic Engineering and ScienceRequires access
The Design of X-band Cassegrain Antenna for Spill-over Suppression
Woosang Lee, Jang Won, Lee Byoung-Moo, Yang Gi-Joo, Lee Sang-Heun, Yoon Young-Joong
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Abstract
In this paper, new structure of the Cassegrain reflector antenna whose spill-over is efficiently reduced by modified reflectors is proposed for high power. It can be achieved by designing the geometry of subreflector in Cassegrain system using two hyperbolic curves in order to be suitable a lager beamwidth of feeding pattern without broadening main reflector. Finally, radiation efficiency and side lobe level of the proposed Cassegrain reflector antenna can be improved respectively 9 %, 10 dB than conventional one.