发明名称 |
Tuning arrangement for a cavity filter |
摘要 |
The present invention relates to an arrangement in a cavity filter for tuning the frequency relationship of the filter or its coupling coefficient factor. The arrangement includes a self-locking screw that can be fitted in the filter cavity, for instance in the center conductor, in the filter lid, or in some suitable place in the filter chassis. Tuning is effected by adjusting the position of the screw in relation to the center conductor or lid of the cavity filter. The screw can be made of metallic segments embedded in plastic, or made completely of metal, and provided with a radially through-penetrating slot. At least one part of the screw has a cross-sectional area whose extension perpendicular to the through-penetrating slot is slightly greater than in a direction along said slot.
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申请公布号 |
US6384699(B1) |
申请公布日期 |
2002.05.07 |
申请号 |
US20000548652 |
申请日期 |
2000.04.13 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
HENNINGSSON BO UNO EGON;AHL TORBJOERN;LINDELL SVEN PATRIK |
分类号 |
F16B1/02;F16B39/04;F16B39/22;F16B39/284;H01P1/205;H01P1/207;H01P7/04;H01P7/06;(IPC1-7):H01P7/04 |
主分类号 |
F16B1/02 |
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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