发明名称 |
Resonator, filter, duplexer, composite filter device, transmission-reception device, and communication device |
摘要 |
In a dielectric block having a through-hole, an outer surface electrode is formed on the outer surface of the dielectric block excluding the outer surfaces having the openings of the through-hole, and an inner surface electrode is formed on the inner surface of the through-hole. The dielectric block is made of a dielectric of which the dielectric constant having a negative temperature coefficient, that is, the dielectric constant increases as the temperature decreases. The inner surface electrode is formed by lamination of a superconductor film and a metallic film, and similarly, the outer surface electrode is formed by lamination of a superconductor film and a metallic film.
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申请公布号 |
US2003137362(A1) |
申请公布日期 |
2003.07.24 |
申请号 |
US20030338023 |
申请日期 |
2003.01.08 |
申请人 |
MATSUI NORIFUMI;HATTORI JUN |
发明人 |
MATSUI NORIFUMI;HATTORI JUN |
分类号 |
H01P7/04;H01P1/205;(IPC1-7):H01P1/213;H01B12/02 |
主分类号 |
H01P7/04 |
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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