| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna power feeding circuit of which a structure can be simplified and manufacturing costs can be reduced. SOLUTION: An antenna power feeding circuit includes: an OMJ 101; filters 102a-102d connected to branched waveguides 101a-101d, respectively; phase shifters 103a, 104a which are connected to the filters 102a, 102b, respectively, and in which a phase difference between radio waves passed becomes 90°each other; phase shifters 103b, 104b which are connected to the filters 102c, 102d, respectively, and in which a phase difference between radio waves passed becomes 90°each other; a magic T 105 connected to the phase shifters 103a, 104a; a magic T 106 connected to the phase shifters 103b, 104b; an H-plane T-branch circuit 107 for combining radio waves outputted from the magic Ts 105 and 106; and an E-plane T-branch circuit 108 for combining radio waves outputted from the magic Ts 105 and 106. COPYRIGHT: (C)2009,JPO&INPIT
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