发明授权
- 专利标题： Multi-mode surface acoustic wave filter device and duplexer
- 专利标题（中）： 多模式声表面波滤波器和双工器
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申请号： US10682917申请日： 2003-10-14
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公开(公告)号： US07078989B2公开(公告)日： 2006-07-18
- 发明人: Shogo Inoue , Jun Tsutsumi , Takashi Matsuda , Masanori Ueda
- 申请人： Shogo Inoue , Jun Tsutsumi , Takashi Matsuda , Masanori Ueda
- 申请人地址： JP Yokohama JP Kawasaki
- 专利权人： Fujitsu Media Devices Limited,Fujitsu Limited
- 当前专利权人： Fujitsu Media Devices Limited,Fujitsu Limited
- 当前专利权人地址： JP Yokohama JP Kawasaki
- 代理机构： Arent Fox PLLC
- 优先权： JP2002-304035 20021018; JP2003-119132 20030423
- 主分类号： H03H9/64
- IPC分类号： H03H9/64 ; H03H9/72
摘要：
A multi-mode surface acoustic wave filter device includes: a piezoelectric substrate; at least one input IDT (interdigital transducer) and at least one output IDT that are formed on the piezoelectric substrate; reflectors that are formed on the piezoelectric substrate and arranged on the external sides of the input IDT and the output IDT; an input terminal that supplies input signals to the input IDT; and an output terminal that receives output signals from the output IDT. In this multi-mode surface acoustic wave filter, the input terminal and the output terminal extend in the same direction.