发明名称 |
Multi-mode surface acoustic wave filter device and duplexer |
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.
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申请公布号 |
US2004075511(A1) |
申请公布日期 |
2004.04.22 |
申请号 |
US20030682917 |
申请日期 |
2003.10.14 |
申请人 |
FUJITSU MEDIA DEVICES LIMITED;FUJITSU LIMITED |
发明人 |
INOUE SHOGO;TSUTSUMI JUN;MATSUDA TAKASHI;UEDA MASANORI |
分类号 |
H03H9/02;H03H9/145;H03H9/64;H03H9/72;(IPC1-7):H03H9/64 |
主分类号 |
H03H9/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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