| 摘要 |
PURPOSE: A dual feeding system of a satellite broadcasting receiver is provided to minimize a mutual interference phenomenon between a circularly polarized wave and a linearly polarized wave and enhance efficiency of reception by receiving and combining the circularly polarized wave and the linearly polarized wave. CONSTITUTION: The first feed horn portion(10) receives a circularly polarized wave. The second feed horn portion(20) receives a linearly polarized wave. The first and the second feed horn portions(10,20) are formed on the same plane of a housing(40) of a feeding system. A printed circuit board(30) is mounted at rear end portions of each waveguide(12,22) of the first and the second feed horn portions(10,20). Patch antennas are installed at sides(32,34) of the printed circuit board(30) corresponding to the rear end portions of the waveguides(12,22) according to each polarized wave. A LNB(Low Noise Block-down) converter is formed on other side(36) of the printed circuit board(30) for processing two signals.
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