Abstract
In this paper we developed load-bearing outer surface that provides antenna performances, and it is termed Composite-Antenna-Structures(CAS). CAS is composite sandwich structure in which antenna part is inserted between honeycomb core and lower facesheet. Design procedure is presented including structure design, material selection and design of antenna elements. in order to obtain high electrical and mechanical performances. Optimized honeycomb thickness is selected, in which maximum gain is obtained by resonance condition. Measured electrical performances show that CAS has wide bandwidth over 10% and higher gain by 3.5 dBi than initially designed antenna, and no doubt it has excellent mechanical performances by composite laminates and honeycomb cores. The CAS concept can be extended to give a useful guide for manufacturers of structural body panels as well as antenna designers, promising innovative future communication technology.
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