Sampling demodulator for amplitude shift keying (ASK) radio receiver
US7885359B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 2007 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Oct 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/0331
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, algorithm, circuits, and/or systems for amplitude shift keying (ASK) modulation are disclosed. In one embodiment, a sampling demodulator includes a comparator configured to compare an ASK modulated input to a predetermined voltage level and provide a comparison result, a pulse stretcher with a sampler configured to sample the comparison result a plurality of times for each of a plurality of cycles of the ASK modulated input to generate a bit stream and digital logic configured to determine a value for each data bit in the ASK modulated input from the bit stream, and a digital filter configured to filter an output of the digital logic, thereby providing a demodulated signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.