发明公开
EP1465337A4 BRANCHING FILTER AND ELECTRONIC APPARATUS USING THE BRANCHING FILTER
审中-公开
路滤波器和如此装备的电子设备
- 专利标题： BRANCHING FILTER AND ELECTRONIC APPARATUS USING THE BRANCHING FILTER
- 专利标题（中）： 路滤波器和如此装备的电子设备
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申请号： EP02805469申请日： 2002-10-17
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公开(公告)号： EP1465337A4公开(公告)日： 2009-11-11
- 发明人: IWAMOTO YASUHIDE , INOUE SHOGO , IKATA OSAMU , TSUTSUMI JUN
- 申请人： FUJITSU MEDIA DEVICES LTD , FUJITSU LTD
- 专利权人： FUJITSU MEDIA DEVICES LTD,FUJITSU LTD
- 当前专利权人： FUJITSU MEDIA DEVICES LTD,FUJITSU LTD
- 优先权： JP2001390706 2001-12-21; JP2002134770 2002-05-10
- 主分类号： H03H9/00
- IPC分类号： H03H9/00 ; H03H9/05 ; H03H9/10 ; H03H9/25 ; H03H9/64 ; H03H9/72
摘要：
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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