Electronically tuned cavity filter
US8941443B1 · kind B1 · utility
1Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2012 |
| Grant date | Jan 27, 2015 |
| Priority date | — |
| Expiry date | Mar 21, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A cavity filter having a piezoelectric tuning element is tuned by determining a desired oscillating frequency for the piezoelectric tuning element and applying that frequency through a phase-locked loop. The phase-locked loop maintains the piezoelectric tuning element at the desired frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.