Title:
A resonator and a high pass filter
Document Type and Number:
Japanese Patent JP6187594
Kind Code:
B2
Abstract:
A resonant circuit includes a resonator having a resonant frequency and an anti-resonant frequency, an inductor connected in series to the resonator, an inductor connected in parallel to the resonator, and a series circuit in which a variable capacitor is connected in series to an inductor (15). The series circuit is connected in parallel to the resonator. The anti-resonant frequency closest to the resonant frequency of the resonator is moved toward higher frequencies or lower frequencies of the resonant frequency on a frequency axis with a variation in the capacitance value of the variable capacitor. With this configuration, a resonator device and a high-frequency filter are provided, in which the relationship between a transmission frequency band and a reception frequency band on the frequency axis is applicable to a variety of multiple communication bands.
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Inventors:
Hajime Kondo
Masakazu Tani
Masakazu Tani
Application Number:
JP2015539062A
Publication Date:
August 30, 2017
Filing Date:
September 05, 2014
Export Citation:
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
H03H9/64; H03H7/12
Domestic Patent References:
| JP10173475A | ||||
| JP2002223147A | ||||
| JP2004173245A | ||||
| JP2011071911A | ||||
| JP2012257050A |
Foreign References:
| WO2011093449A1 |
Attorney, Agent or Firm:
Kaede International Patent Office
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