发明名称 |
Piezoelectric resonator filter |
摘要 |
The present invention is directed to a piezoelectric resonator filter for allowing a high-frequency signal in a desired frequency band to pass therethrough, including: two or more reactance elements in serial connection between input and output terminals; at least three or more piezoelectric resonators in parallel connection between the input and output terminals; and an inductor having a grounded end. Among the three or more piezoelectric resonators, only those piezoelectric resonators which do not adjoin each other in the equivalent circuit are connected in common to the inductor.
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申请公布号 |
US2006139120(A1) |
申请公布日期 |
2006.06.29 |
申请号 |
US20050543837 |
申请日期 |
2005.07.29 |
申请人 |
YAMAGUCHI HIROSHI;YAMAKAWA TAKAHIKO;NAKATSUKA HIROSHI;NAKAMURA HIROYUKI;ONISHI KEIJI |
发明人 |
YAMAGUCHI HIROSHI;YAMAKAWA TAKAHIKO;NAKATSUKA HIROSHI;NAKAMURA HIROYUKI;ONISHI KEIJI |
分类号 |
H03H9/70;H03H9/58;H03H9/64 |
主分类号 |
H03H9/70 |
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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