- 专利标题： Trap filter and filter circuit
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申请号： US16542338申请日： 2019-08-16
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公开(公告)号： US10903812B2公开(公告)日： 2021-01-26
- 发明人: Hideaki Kobayashi , Kenichi Ishizuka
- 申请人： Murata Manufacturing Co., Ltd.
- 申请人地址： JP Nagaokakyo
- 专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人： Murata Manufacturing Co., Ltd.
- 当前专利权人地址： JP Nagaokakyo
- 代理机构： Keating & Bennett, LLP
- 优先权： JP2017-064120 20170329
- 主分类号： H03H7/09
- IPC分类号： H03H7/09 ; H03H7/01 ; H01F17/00 ; H03H1/00
摘要：
A trap filter includes a first inductor, a second inductor, and a capacitor. A first end of the first inductor extends to a first connection portion, a third end of the second inductor is connected to a second end of the first inductor, and a fourth end extends to a second connection portion. The capacitor is connected in parallel with the second inductor. The first inductor and the second inductor are subtractive-polarity coupled. An inductance value of the second inductor is less than an absolute value of mutual inductance generated by coupling of the first inductor and the second inductor.
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