发明名称 |
SURFACE ACOUSTIC WAVE RESONATOR, AND SURFACE ACOUSTIC WAVE FILTER AND ANTENNA DUPLEXER IN WHICH THE SURFACE ACOUSTIC WAVE RESONATOR IS USED |
摘要 |
The present invention provides a surface acoustic wave resonator capable of improving the leak of a surface acoustic wave in the transverse direction and reducing the spurious and having superior characteristics. In a surface acoustic wave filter according to the present invention, an interdigital transducer electrode and reflector electrodes are formed on a piezoelectric substrate, and a SiO2 thin film is further formed thereon. The interdigital transducer electrode includes a bus-bar electrode region, a dummy electrode region and a finger overlap region, and the SiO2 thin film is removed from upper sections of the bus-bar electrode regions in the interdigital transducer electrode.
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申请公布号 |
US2010219905(A1) |
申请公布日期 |
2010.09.02 |
申请号 |
US20070094324 |
申请日期 |
2007.12.14 |
申请人 |
NAKAMURA HIROYUKI;NAKANISHI HIDEKAZU;IWASAKI YUKIO;MATSUNAMI KEN;TSURUNARI TETSUYA |
发明人 |
NAKAMURA HIROYUKI;NAKANISHI HIDEKAZU;IWASAKI YUKIO;MATSUNAMI KEN;TSURUNARI TETSUYA |
分类号 |
H03H9/17 |
主分类号 |
H03H9/17 |
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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