专利检索 ap:("FUJITSU MEDIA DEVICES LTD" OR "FUJITSU LTD") AND inv:"INOUE SHOGO" 第 1 页

1.

发明公开
BRANCHING FILTER AND ELECTRONIC APPARATUS USING THE BRANCHING FILTER 审中-公开
标题翻译：路滤波器和如此装备的电子设备

公开(公告)号：EP1465337A4

公开(公告)日：2009-11-11

申请号：EP02805469

申请日：2002-10-17

申请人： FUJITSU MEDIA DEVICES LTD , FUJITSU LTD

发明人： IWAMOTO YASUHIDE , INOUE SHOGO , IKATA OSAMU , TSUTSUMI JUN

IPC分类号： H03H9/00 , H03H9/05 , H03H9/10 , H03H9/25 , H03H9/64 , H03H9/72

CPC分类号： H03H9/6469 , H03H9/0028 , H03H9/0076 , H03H9/0085 , H03H9/0576 , H03H9/6436 , H03H9/6476 , H03H9/6483 , H03H9/72 , H03H9/725 , H03H2250/00

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.