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Vivaldi antenna becomes a hot topic because of its band width, simple structure, easy processing, light weight and low cost. It is often used in communication system. This paper designed a Vivaldi antenna which can work on L, S, C, X, Ku band together. The proposed antenna has dual-slot conduction and “T” shaped feed structure, which effectively improve the antenna's directivity. And it has the advantage...
In this communication, a high-gain partially reflecting surface (PRS) antenna with both in-band and out-of-band radar cross section (RCS) reduction (RCSR) is presented. A microstrip patch antenna acts as the source and is surrounded by the metamaterial ground plane (MGP), which is to reduce the in-band RCS of the proposed antenna. A PRS is located approximately one-half of the wavelength above the...
In this paper, a new approach to gain-scheduling of robust autopilot was proposed for morphing guided aerial bombs in a bank-to-turn (BTT) mode. The nonlinear dynamic model was established and anticipant performance criterions were given firstly. Feedback robust BTT autopilot of 3-channel was designed independently for selected operating points in order to restrain cross-channel coupling disturbances...
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