发明名称 |
Tunable resonance device controlled by separate permittivity adjusting electrodes |
摘要 |
A first electrically conductive layer whose thickness is equal to or smaller than the skin depth of the radio wave used for communication, a dielectric layer whose permittivity is changed by application of electric field, and a second electrically conductive layer whose thickness is equal to or smaller than the skin depth of the radio wave used for communication are sequentially stacked near a resonance element which is formed on the front surface of a dielectric substrate having a ground layer formed on the rear surface thereof. The effective permittivity of the dielectric layer is changed in a wide range by changing a voltage applied between the first and second electrically conductive layers to change the electric field applied to the dielectric layer. As a result, the impedance of the resonance element is changed, and when a plurality of resonance elements are arranged closely to each other to construct a filter, the coupling degree between the resonance elements is changed. Therefore, characteristics such as the resonance frequency of the resonator and the pass-band frequency of the filter are controlled by controlling a voltage to be applied.
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申请公布号 |
US5965494(A) |
申请公布日期 |
1999.10.12 |
申请号 |
US19960653270 |
申请日期 |
1996.05.24 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
TERASHIMA, YOSHIAKI;YOSHINO, HISASHI;KAYANO, HIROYUKI;MAEDA, TADAHIKO |
分类号 |
H01P1/203;H01P7/08;(IPC1-7):H01P7/08;H01L12/02 |
主分类号 |
H01P1/203 |
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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