FSK demodulator using goertzel's discrete fourier transform
US5818296A · kind A · utility
13Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/148
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A frequency shift keyed demodulator system employs a first bandpass filter having a passband centered at a first frequency; a second bandpass filter having a passband centered at a second frequency; a first Goertzel's discrete Fourier transform processor coupled to an output of the first bandpass filter; a second Goertzel's discrete Fourier transform processor coupled to an output of the second bandpass filter; and an adder coupled to an output of the first Goertzel's discrete Fourier transform processor, and to an output of the second Goertzel's discrete Fourier transform processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.