Title:
音響バルク波によって動作するレゾネータ
Document Type and Number:
Japanese Patent JP2009517931
Kind Code:
A
Abstract:
The invention relates to a filter operating with bulk acoustic waves, comprising at least one first resonator and at least one second resonator. In the at least one first and second resonator, a longitudinal acoustic mode is capable of propagation, for which normal dispersion is adjusted in the first resonator and abnormal dispersion in the second resonator by selection of the material and the relative layer thicknesses. In particular, the power compatibility of the filter at the higher frequency edge of its passband can be improved.
Inventors:
Hubbo Heinze
Pacifica
Edgar Schmeet Hummer
Pacifica
Edgar Schmeet Hummer
Application Number:
JP2008542601A
Publication Date:
April 30, 2009
Filing Date:
December 04, 2006
Export Citation:
Assignee:
EPCOS AG
International Classes:
H03H9/54; H01L41/09; H01L41/18; H03H9/17
Domestic Patent References:
| JP2002268645A | 2002-09-20 | |||
| JP2002268644A | 2002-09-20 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Reinhard Einsel