MEMS tunable notch filter frequency automatic control loop systems and methods
US8810331B2 · kind B2 · utility
18Cited by
18References
18Claims
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Key dates
| Filing date | Dec 12, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Oct 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2007/013
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Tunable notch filters and control loop systems and methods can include a tunable notch filter providing a stop band, a sensing circuit in communication with the tunable notch filter and adapted to determine a phase change between a reference signal and a signal reflected from the tunable notch filter, and a control loop in communication with the tunable notch filter and the sensing circuit, the control loop being operable to adjust the tunable notch filter to modify the phase change.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.