发明名称 |
Saw resonator filter with bridged-T configuration |
摘要 |
A surface-acoustic-wave filter has a pair of series-arm surface-acoustic-wave resonators and a shunt-arm surface-acoustic-wave resonator coupled in a T configuration. An additional bridging surface-acoustic-wave resonator is coupled between the input and output terminals, in parallel with the series arm. The bridging surface-acoustic-wave resonator provides enhanced attenuation of spurious signals at multiples of the passband frequency.
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申请公布号 |
US6377140(B1) |
申请公布日期 |
2002.04.23 |
申请号 |
US20000526490 |
申请日期 |
2000.03.15 |
申请人 |
OKI ELECTRIC INDUSTRY CO., LTD. |
发明人 |
EHARA HISANORI;SHIMAMURA HAJIME;FUJITA YOSHIAKI;KOMAZAKI TOMOKAZU |
分类号 |
H03H9/54;H03H9/25;H03H9/64;(IPC1-7):H03H9/64 |
主分类号 |
H03H9/54 |
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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