公开(公告)号：US09680441B2

公开(公告)日：2017-06-13

申请号：US13938883

申请日：2013-07-10

申请人： TAIYO YUDEN CO., LTD.

发明人： Fumitaka Iizuka ,  Kentaro Nakamura

IPC分类号： H01Q1/50 ,  H01Q5/00 ,  H03H7/38 ,  H01Q5/314 ,  H03H7/40

CPC分类号： H03H7/38 ,  H01Q1/50 ,  H01Q5/314 ,  H03H7/40

摘要： An impedance matching circuit is connected to a first circuit block (impedance matching target circuit) that requires impedance matching and that has one terminal connected to a signal line and the other terminal connected to a ground, the impedance matching circuit having a second circuit block that has a first circuit and a second circuit connected in parallel. In the first circuit, a first capacitor having a variable capacitance and a first inductor having a first inductance are connected in series, and in the second circuit, a second inductor having a second inductance and a switch are connected are connected in series. The impedance matching circuit has one terminal connected to the signal line of the first circuit block and the other terminal connected to the ground of the first circuit block.