Modulation device and transmitter comprising such a device
US7280003B2 · kind B2 · utility
3Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 2005 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Aug 22, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/206
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A signal modulation device comprises a delta-sigma modulator disposed for transforming an amplitude-modulation signal in baseband into a pulse signal. It also comprises a phase modulator receiving, at its input, analogue phase-modulation signals in baseband. The pulse signal is mixed with carrier signals upstream of the phase modulator. The modulation device is designed to form an input stage of a transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.