摘要 |
A concentrated constant irreciprocal device comprising a permanent magnet for applying a DC magnetic field to a ferrimagnetic body, an assembly in which at least a part of a plurality of center conductors one end of which serves as a common terminal and the other of which serves as a first input/output terminal is wound on or embedded in the ferrimagnetic body, a plurality of second input/output terminals, a plurality of impedance converting circuits connected between the second input/output terminals and the first input/output terminals, respectively, and a plurality of load capacitors connected between the first input/output terminals and the common terminals, respectively. The input impedance Zi of the corresponding first input/output terminal at the operating center frequency and an external impedance Zo connected with the corresponding second input/output terminal satisfy 0.05 </= Zi/Zo </= 0.9. As a result, it is possible to provide a small concentrated constant circulator/isolator of a wide band width having excellent electric characteristics.
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申请人 |
HITACHI METALS, LTD.;TAKEDA, SHIGERU;KISHIMOTO, YASUSHI;ITOH, HIROYUKI;ICHIKAWA, KOUJI;WATANABE, SHUICHI |
发明人 |
TAKEDA, SHIGERU;KISHIMOTO, YASUSHI;ITOH, HIROYUKI;ICHIKAWA, KOUJI;WATANABE, SHUICHI |