System and method for determining a resonant frequency in a communications device
US7561865B2 · kind B2 · utility
1Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Jan 3, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/10
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A communications device including communications circuitry, tunable filter circuitry including a node configured to pass a signal between an antenna and the communication circuitry, and control circuitry configured to cause energy in the tunable filter circuitry to be adjusted for a time period and configured to determine a resonant frequency of the tunable filter circuitry from oscillations on the node caused by the energy subsequent to the time period is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.