发明名称 |
MINIATURE THIN-FILM BANDPASS FILTER |
摘要 |
<p>A bandpass filter includes at least two thin-film layers, a first resonant circuit including a first inductor, and a second resonant circuit including a second inductor. In one embodiment, the first inductor comprises a coil having a counter-clockwise rotation positioned in two or more of the at least two thin-film layers and the second inductor comprises a coil having a clockwise rotation positioned in two or more of the at least two thin-film layer. In this case, the first inductor is coupled to the second inductor in at least one of the at least two thin-film layers when the bandpass filter is energized. In another embodiment, the first inductor has a clockwise rotation and the second has a counter-clockwise rotation positioned. In this case, the first inductor is coupled to the second inductor in at least two of the at least two thin-film layers when the bandpass filter is energized.</p> |
申请公布号 |
WO2007089800(A1) |
申请公布日期 |
2007.08.09 |
申请号 |
WO2007US02575 |
申请日期 |
2007.01.30 |
申请人 |
TDK CORPORATION;CHEN, QIANG, RICHARD;KUWAJIMA, HAJIME |
发明人 |
CHEN, QIANG, RICHARD;KUWAJIMA, HAJIME |
分类号 |
H01P1/203 |
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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