Filter-tracking and control method
US8436693B2 · kind B2 · utility
3Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2007 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Sep 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J3/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method to track and control the resonance frequency of a band-pass filter provides a solution for the sensitivity limitations against temperature and process variations. A phase sensing module obtains the phase difference between the input and output and a negative feed-back control architecture can be used to tune the filter's resonance over the input RF frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.