发明名称 |
Surface acoustic wave duplexer and portable communication device using the same |
摘要 |
A surface acoustic wave duplexer includes a piezoelectric substrate; a transmitting filter formed on the piezoelectric substrate; a receiving filter formed on the piezoelectric substrate; a transmitting (Tx) branching line formed on the piezoelectric substrate; and a receiving (Rx) branching line formed on the piezoelectric substrate.
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申请公布号 |
US6765456(B2) |
申请公布日期 |
2004.07.20 |
申请号 |
US20010015606 |
申请日期 |
2001.12.17 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
EHARA HISANORI;NOGUCHI KAZUSHIGE;TERADA SATOSHI;KOMAZAKI TOMOKAZU |
分类号 |
H03H7/19;H03H9/64;H03H9/72;(IPC1-7):H03H9/72 |
主分类号 |
H03H7/19 |
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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