Method for achieving immediate and accurate automatic frequency tuning
US7171181B2 · kind B2 · utility
0Cited by
11References
24Claims
0Family size
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Key dates
| Filing date | Aug 11, 2003 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jan 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J2200/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An automatic frequency tuning (AFT) system which can effect immediate and accurate automatic frequency tuning of the local oscillator (LO) of a receiver, in order to achieve a stable intermediate frequency (IF) signal while reducing the power consumption and the cost of the system. In the automatic frequency tuning (AFT) system, an analog-to-digital converter (ADC) converts the intermediate frequency (IF) to a digital value which is sent to a microcontroller. A signal sent from the microcontroller accurately and automatically tunes the local oscillator (LO).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.