Title:
チューニング機構
Document Type and Number:
Japanese Patent JP4672871
Kind Code:
B2
Abstract:
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.
Inventors:
Henningson, Uno
Ahl, Torbjern
Lindel, Patrik
Ahl, Torbjern
Lindel, Patrik
Application Number:
JP2000611336A
Publication Date:
April 20, 2011
Filing Date:
April 11, 2000
Export Citation:
Assignee:
Telefon Akti Bora Get Elm Ericson (Pubble)
International Classes:
F16B1/02; F16B39/04; F16B39/22; H01P1/205; H01P1/207; H01P7/04; H01P7/06; F16B39/284
Domestic Patent References:
| JP1140016U | ||||
| JP9324811A | ||||
| JP2005901U | ||||
| JP59132205A |
Foreign References:
| US2093171 |
Attorney, Agent or Firm:
Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura