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公开(公告)号：JP3824499B2
公开(公告)日：2006-09-20
申请号：JP2001122754
申请日：2001-04-20
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H03H9/25 , H03H9/14526 , H03H9/6483
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公开(公告)号：JP3824498B2
公开(公告)日：2006-09-20
申请号：JP2001120011
申请日：2001-04-18
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H03H9/14505 , H03H9/14526 , H03H9/6423 , H03H9/6483
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公开(公告)号：JP4252584B2
公开(公告)日：2009-04-08
申请号：JP2006127017
申请日：2006-04-28
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
IPC: H03H9/17 , H01L41/09 , H01L41/18 , H01L41/187 , H03H9/58
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公开(公告)号：JP4149444B2
公开(公告)日：2008-09-10
申请号：JP2005005791
申请日：2005-01-12
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H03H9/132 , H03H3/02 , H03H9/02133 , H03H9/173 , H03H2003/021
Abstract: A piezoelectric thin-film resonator includes a film laminate formed on a device substrate (41), the film laminate including a lower electrode (43), a piezoelectric film (44) provided on the device substrate and the lower electrode, and an upper electrode (45) provided on the piezoelectric film. At least one of the upper and lower electrodes has an electrode leading portion that extends from an membrane in which the upper electrode overlaps with the lower electrode through the piezoelectric film and has a width narrower than that of the membrane.
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公开(公告)号：JP3967289B2
公开(公告)日：2007-08-29
申请号：JP2003126089
申请日：2003-04-30
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H04B1/52 , H01L24/32 , H01L2224/32225 , H01L2224/48091 , H01L2224/48227 , H01L2224/49171 , H01L2224/73265 , H01L2924/30111 , H01L2924/00014 , H01L2924/00
Abstract: A duplexer includes two surface acoustic wave (SAW) filters having different center frequencies; a phase matching circuit that matches phases of the two SAW filters; a package in which the SAW filters and the phase matching circuit are housed, the package being composed of multiple layers; and a line pattern provided between at least one of the SAW filters and at least one of a transmit terminal and a receive terminal of the duplexer. The line pattern runs on at least two of the multiple layers within a range defined by peripheral ground patterns provided in the package.
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公开(公告)号：JP3833569B2
公开(公告)日：2006-10-11
申请号：JP2002134770
申请日：2002-05-10
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H03H9/6469 , H03H9/0028 , H03H9/0076 , H03H9/0085 , H03H9/0576 , H03H9/6436 , H03H9/6476 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00
Abstract: A duplexer includes two surface acoustic wave filter having different band center frequencies, and a phase matching circuit that matches the phases of the two surface acoustic wave filters to each other. In this duplexer, one of the two surface acoustic wave filters is a ladder type surface acoustic wave filter, while the other one of the two surface acoustic wave filters includes two or more dual-mode type surface acoustic wave filters that are connected in parallel.
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公开(公告)号：JP3467472B2
公开(公告)日：2003-11-17
申请号：JP2000348423
申请日：2000-11-15
Applicant: 富士通メディアデバイス株式会社 , 富士通株式会社
CPC classification number: H03H9/14552 , H03H9/6483
