Title:
アンテナ共用器とこれを搭載した電子機器
Document Type and Number:
Japanese Patent JP5263390
Kind Code:
B2
Abstract:
An antenna sharer with both low loss and sharp attenuation characteristic in a wide band is achieved. Antennal sharer 1 of the present invention includes first filter 3 for passing a signal in the first frequency band, and second filter 4 for passing a signal in the second frequency band higher than the first frequency band. First filter 3 includes a ladder filter that includes first series resonator 6 and second series resonator 7 with an antiresonant frequency point higher than antiresonant frequency of first series resonator. Electromechanical coupling coefficient of first series resonator 6 is smaller than electromechanical coupling coefficient of second series resonator 7.
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Inventors:
Kazunori Nishimura
Tobe Haruka
Tetsuya Tsurunari
Tobe Haruka
Tetsuya Tsurunari
Application Number:
JP2011510218A
Publication Date:
August 14, 2013
Filing Date:
April 21, 2010
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H03H9/72; H03H9/145
Domestic Patent References:
| JP2004242281A | 2004-08-26 | |||
| JPH09214285A | 1997-08-15 | |||
| JP2004023611A | 2004-01-22 | |||
| JPH09167937A | 1997-06-24 |
Foreign References:
| WO2009119007A1 | 2009-10-01 | |||
| WO2005107069A1 | 2005-11-10 | |||
| US6894588B2 | 2005-05-17 | |||
| WO2009119007A1 | 2009-10-01 |
Attorney, Agent or Firm:
Hiroki Naito
Kentaro Fujii
Ikuro Terauchi
Kentaro Fujii
Ikuro Terauchi