Intermediate frequency tuner
US7155196B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 2002 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Apr 24, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/1027
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention is a method and apparatus for optimizing performance of a transceiver selecting and processing an intermediate frequency free of significant interference, such as noise. A frequency band may be scanned to detect interference upon which an intermediate frequency free of significant interference may be selected. This may enhance performance of the receiver by reducing the effects of noise. Additionally, perrformance may be further optimized by adjusting the passband of the filter such that the center of the passband matches the selected intermediate frequency. This may provide stability as centering of the passband may account for process, voltage and temperature variations and errors. Further, performance may be enhanced by ensuring desirable signal attributes are passed through the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.