| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a microwave distribution circuit capable of operating over wide frequency bands, and to provide a variable bandpass filter. Ž<P>SOLUTION: The present invention relates to a microwave distribution circuit for distributing a microwave signal input to an input terminal into a plurality of signals and outputting the signals from a pass terminal and a coupling terminal, comprising: a coupling line 2 constituted of two transmission lines 1 disposed in parallel; a plurality of grounding variable capacitors 3 for connecting both ends of each of the two transmission lines 1 to a ground; and a control means for setting capacity of the grounding variable capacitors 3 so as to minimize, at a frequency to be used, a difference between an amount of passing from the input terminal to the pass terminal and an amount of coupling from the input terminal to the coupling terminal when the frequency to be used of the microwave signal is decreased or increased. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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