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http://dx.doi.org/10.5515/KJKIEES.2013.24.9.908

Design of the Shaped Cassegrain Antenna Considering the Excited Power Function  

Kong, Ki-Bok (Department of Information and Communications Engineering, Kyungsung University)
Kim, Jong-Sung (Department of Information and Communications Engineering, Kyungsung University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.24, no.9, 2013 , pp. 908-914 More about this Journal
Abstract
A shaped Cassegrain antenna is designed from the condition of the same path length at the equi-phase surface by using the conservation of energy and Snell's law. In order to improve the phase error efficiency of aperture surface, the surface profile of the main and sub-reflectors is found to satisfy the power distribution and the equi-phase condition at the aperture surface. The sidelobe levels of 36.4 dB and 33.9 dB are achieved at the AZ and EL planes, respectively from numerical calculation by physical optics method at Ku band and the directivity of designed antenna is 10 percent greater than that of conventional antenna.
Keywords
Cassegrain Reflector Antenna; Spill-over; Phase Center;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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