Tuning circuit having amplitude-varying function
US7171178B2 · kind B2 · utility
1Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Dec 16, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A tuning circuit having an amplitude-varying function is disclosed that comprises a coil, a capacitor, and a resistance-adjusting element connected in parallel to the coil and the capacitor for varying resistance at time of resonance of the tuning circuit, wherein the amplitude of an output signal of the tuning circuit is varied by varying the resistance with the resistance-adjusting element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.