Frequency modulation assembly and cavity filter
US9997821B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 21, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03C7/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency modulation assembly includes a self-locking screw, a self-locking adjuster and an elastic member. The self-locking screw has a first external screw thread, the self-locking adjuster has a mounting hole in which an internal screw thread is formed, the self-locking screw is inserted into the mounting hole, and the first external screw thread is engaged with the internal screw thread to achieve a connection between the self-locking screw and the self-locking adjuster, one end of the self-locking screw which passes through the mounting hole is inserted into a ceramic resonance rod in the cavity filter, and the elastic member is connected with the self-locking screw and configured between the self-locking adjuster and the ceramic resonance rod. The frequency modulation assembly can decrease accumulated assembly tolerances, reduce manufacturing cost and improve assembly efficiency, further the elastic member is beneficial to adjust the accuracy of the frequency modulation effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.