Title:
ANTENNA SHARER
Document Type and Number:
WIPO Patent Application WO/2010/122786
Kind Code:
A1
Abstract:
Disclosed is an antenna sharer having low loss and a steep attenuation characteristic in a wide band. The antenna sharer (1) is provided with a first filter (3) that allows a signal of a first frequency band to pass and a second filter (4) that allows a signal of a second frequency band higher than the first frequency band to pass. The first filter (3) is provided with a ladder-type filter including a first series resonator (6) and a second series resonator (7) having an anti-resonance frequency point that is higher than the anti-resonance frequency of the first series resonator (6). The electromechanical coupling coefficient of the first series resonator (6) is smaller than the electromechanical coupling coefficient of the second series resonator (7).
Inventors:
NISHIMURA KAZUNORI
JIBU TORU
TSURUNARI TETSUYA
JIBU TORU
TSURUNARI TETSUYA
Application Number:
PCT/JP2010/002862
Publication Date:
October 28, 2010
Filing Date:
April 21, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
NISHIMURA KAZUNORI
JIBU TORU
TSURUNARI TETSUYA
NISHIMURA KAZUNORI
JIBU TORU
TSURUNARI TETSUYA
International Classes:
H03H9/72; H03H9/145; H03H9/64
Domestic Patent References:
| WO2005107069A1 | 2005-11-10 | |||
| WO2009119007A1 | 2009-10-01 |
Foreign References:
| JP2004242281A | 2004-08-26 | |||
| JPH09214285A | 1997-08-15 | |||
| JP2004023611A | 2004-01-22 | |||
| JPH09167937A | 1997-06-24 | |||
| US6894588B2 | 2005-05-17 |
Attorney, Agent or Firm:
NAITO, Hiroki et al. (JP)
Hiroki Naito (JP)
Hiroki Naito (JP)
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