Receiver, signal demodulation module and demodulation method thereof
US8811541B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2071
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signal demodulation module is disclosed. The signal demodulation module includes an injection-locked oscillator, an envelope detector and a data slicer. The injection-locked oscillator has a central oscillating frequency equal to a frequency of a digital modulation signal received, and outputs a phase-locked oscillating signal which is in phase to the digital modulation signal. When input phase of the digital modulation signal changes, output phase of the injection-locked oscillator changes synchronously. The envelope detector is used for detecting an envelope line of the phase-locked oscillating signal and outputting an envelope signal accordingly. The data slicer is used for receiving the envelop signal and outputting a first digital signal according to a reference voltage and the envelop signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.