Search International and National Patent Collections

1. (WO2018198601) BALANCE FILTER

Pub. No.:    WO/2018/198601    International Application No.:    PCT/JP2018/010974
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Wed Mar 21 00:59:59 CET 2018
IPC: H03H 7/42
H03H 7/09
H03H 7/46
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: TANIGUCHI, Tetsuo
谷口 哲夫
KASHIUCHI, Kiyohiro
樫内 清弘
Title: BALANCE FILTER
Abstract:
To minimize the insertion loss of a balance filter and to reduce the size of the balance filter. The balance filter (10) according to one aspect of the present invention comprises first through fifth terminals (P11-P15), an LC serial oscillator (LC133), a first inductor (L113), and a second inductor (L116). The LC serial oscillator (LC133) is connected between the first terminal (P11) and a grounding point. The LC serial oscillator (LC133) includes an inductor unit (L110). The first inductor (L113) is connected between a second terminal (P12) and a third terminal (P13). The first inductor (L113) is coupled to the inductor unit (L110) by electromagnetic field coupling. The second inductor (L116) is connected between the fourth terminal (P4) and the fifth terminal (P5). The second inductor (L116) is coupled to the inductor unit (L110) by electromagnetic field coupling.