| 摘要 |
The present invention is directed to a non-reciprocal device whose use makes it possible to reduce the insertion loss, and the size and thickness of its body, and broaden the frequency band treated by it. The DC magnetic field is adjusted such that, in a Smith chart where the center O 1 represents the normalized impedance, the impedance of the gyromagnetic component 2 is positioned at a value which is on a constant conductance circle smaller than the reference constant conductance circle EC 0 passing the center O 1 and which is on a constant reactance line above the reference constant reactance line EX 0 passing the center O 1 . Inductor L 11 or L 12 has one end connected to a terminal of the center conductor such that in the Smith chart, the impedance of the gyromagnetic component 2 seen from the other end of the inductor L 11 or L 12 is positioned at a value which is on the reference constant conductance circle EC 0 passing the center O 1 . First capacitor C 21 or C 22 is connected, in parallel with the center conductor, to the other end of the inductor L 11 or L 12 such that in the Smith chart, the impedance of the gyromagnetic component 2 seen through the inductor from the connection point of the first capacitor is positioned at a value which is on the center O 1.
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