Patent ID: 9711834
Date: 2017-07-18
CPC Classifications: H01F,H01P

Claim:
1. An irreversible circuit element comprising: a first high pass isolator and a second high pass isolator each including first and second center electrodes intersecting with and insulated from each other on a ferrite to which a direct-current magnetic field is applied with a permanent magnet, one end of the first center electrode is an output port and the other end of the first center electrode is an input port, and one end of the second center electrode is the output port and the other end of the second center electrode is a ground port in each of the first and second isolators, a resistance element and a capacitance element connected in parallel to each other are connected between the input port and the output port in series in each of the first and second isolators; wherein a pass frequency band of the first isolator is higher than a pass frequency band of the second isolator; respective output portions of the first and second isolators are electrically connected and define one output terminal; and a low pass filter is disposed between the output terminal and the output port of the second isolator.