Invention Grant
- Patent Title: Multilayer resonator and multilayer filter
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Application No.: US14302548Application Date: 2014-06-12
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Publication No.: US09673771B2Publication Date: 2017-06-06
- Inventor: Koji Nosaka
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2008-007579 20080117
- Main IPC: H03H7/09
- IPC: H03H7/09 ; H03H7/01 ; H03H5/02 ; H03H1/00

Abstract:
A multilayer filter includes a plurality of mutually coupled resonant circuits provided within a multilayer body. Capacitor internal electrodes, inductor internal electrodes, and inductor via electrodes, ground via electrodes, and input-output via electrodes are arranged within the multilayer body. The ground via electrodes and the input-output via electrodes are provided on a dielectric layer on a mounting surface, or a second dielectric layer on a first dielectric layer provided on the mounting surface. The capacitor internal electrodes arranged towards the side of the mounting surface do not overlap the input-output electrodes when viewed in plan view. With this configuration, degradation in frequency characteristics of a resonant circuit is effectively prevented by controlling one of an inductive component and a capacitive component of the resonant circuit.
Public/Granted literature
- US20140292443A1 MULTILAYER RESONATOR AND MULTILAYER FILTER Public/Granted day:2014-10-02
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