发明名称 |
Selectable bandstop/bandpass filter with switches selecting the resonator coupling |
摘要 |
A dielectric filter (1) comprises a body of dielectric material, having two bores (3) running therethrough acting as resonators. The sides of the body are covered in a metallic coating apart from an upper surface (2) and one side surface (4). Electrode patterns are provided on the uncoated side surface to provide inductive and capacitive coupling between the resonators. By providing switches 8, the ratio of inductive to capacitive coupling can be changed thus allowing the filter to act as a bandstop or bandpass filter depending upon whether the switches are open or closed.
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申请公布号 |
US5541560(A) |
申请公布日期 |
1996.07.30 |
申请号 |
US19940202940 |
申请日期 |
1994.02.28 |
申请人 |
LK-PRODUCTS OY |
发明人 |
TURUNEN, AIMO;JANTUNEN, HELI |
分类号 |
H01P1/10;H01P1/205;(IPC1-7):H01P1/202 |
主分类号 |
H01P1/10 |
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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