Simplified de-rotation in digital FM demodulator architectures
US8184746B2 · kind B2 · utility
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15References
16Claims
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Assignee
Inventor
Key dates
| Filing date | Jul 3, 2006 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jun 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D3/009
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a digital receiver for FM signals, in particular to a new demodulator structure and demodulating method, by which according to a first aspect of the invention the usual complex de-rotation process is reduced to a simple addition/subtraction. According to a second aspect of the invention, the requirements for the sampling frequency necessary for processing the demodulator signals are reduced substantially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.