| 摘要 |
PROBLEM TO BE SOLVED: To match two arbitrary frequencies by connecting a serial resonance circuit serially with a load when it is watched from an input terminal and connecting a parallel resonance circuit in parallel with the load and the entire serial resonance circuit. SOLUTION: The serial resonance circuit is composed of an output terminal 2 to which loads 7 and 8 are connected, input terminal 1 to which input signals to the loads 7 and 8 are inputted, serial capacitor 3 and serial inductor 4 serially connected to the serial capacitor 3, and this serial resonance circuit is serially connected to the loads 7 and 8 when it is watched from the input terminal 1. The parallel resonance circuit is composed of a parallel capacitor 6 and a parallel inductor 5 parallelly connected to the parallel capacitor 6, and connected in parallel to the loads 7 and 8 and entire serial resonance circuit when it is watched from the input terminal 1. Since matching is attained by using a matching circuit composed of serial and parallel resonance circuits, concerning the input resistance of loads 7 and 8 smaller than matching impedance, two arbitrary frequencies can be matched.
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