| 摘要 |
A tracking radar antenna is provided to reduce a side lobe and to improve a mono-pulse signal gain by performing focusing on one focal point through one feed horn. A tracking radar antenna(100) includes a main reflection plate(110), a sub reflection plate(120), a reflection plate frame(130), a feed horn(140), a housing, and a structure. The main reflection plate is a dual structure reflection plate formed by attaching parabolic carbon or glass FRP(Fiber Reinforced Plastic) plates(111,113,115) to both surfaces of a honeycomb thin metal or insulator, converts linear polarization into rotating circular polarization, and then converts the rotating circular polarization into another linear polarization. The sub reflection plate is formed by attaching Cassegrain or transformed glass FPR plates(121,123) to both surfaces of the honeycomb insulator, selectively passes one of vertical and horizontal polarizations, and reflects the other to the main reflection plate. The reflection plate frame is installed between the main and sub reflection plates to remove a lobe. The housing has a mono-pulse coupler(150) inside a case formed by attaching FPR plates to both surfaces of the honeycomb thin metal or insulator. The structure supports and vertically or horizontally drives an antenna plate composed of the main and sub reflection plates.
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