AM demodulator
US7535291B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2005 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/28
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An amplitude modulation receiver including an antenna for receiving a signal and an input filter connected to the antenna. A variable gain amplifier is connected to the input filter and is responsive to a gain control signal. An A/D converter is connected to the variable gain amplifier and is responsive to a sampling signal and provides a sampled digital signal. A D/A converter receives a demodulated signal and provides an analog output signal. A controller receives and demodulates the sampled digital signal from the A/D converter, generates the gain control signal for the variable gain amplifier, generates the sampling signal for the A/D converter, and provides the demodulated signal to the D/A converter. The demodulation and generation of the gain control signal and the sampling signal are performed in software.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.