| 摘要 |
PROBLEM TO BE SOLVED: To excellently receive radio waves transmitted from two artificial satellites, reflected on the same parabolic reflecting mirror and converged. SOLUTION: The antenna feed unit comprise: a primary radiator that is integrally formed with a pair of horns and waveguides each communicatively connected to each horn closely located to each other; a pair of horizontal/vertical polarization demultiplexers wherein circular waveguides having the same axial line as the axial line of each horn and a branch waveguide for a horizontally polarized wave signal and a branch waveguide for a vertically polarized wave signal are connected in a direction orthogonal to an axial line of the circular waveguides while being arranged in the same direction with each other to the circular waveguides; and a converter connected to the horizontal/vertical polarization demultiplexers, and the one horizontal/vertical polarization demultiplexer and the other horizontal/vertical polarization demultiplexer are arranged so that the axial line of the branch waveguide for the horizontally polarized wave signal and the vertically polarized wave signal of the one horizontal/vertical polarization demultiplexer and the axial line of the branch waveguide for the horizontally polarized wave signal and the vertically polarized wave signal of the other horizontal/vertical polarization demultiplexer respectively have an optional angle to the left and the right in a directional line orthogonal from a center point between the horns to the arrangement direction of the horns. COPYRIGHT: (C)2005,JPO&NCIPI
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