Low power I/Q modulator
US7839231B1 · kind B1 · utility
4Cited by
0References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2008 |
| Grant date | Nov 23, 2010 |
| Priority date | — |
| Expiry date | May 27, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/364
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for improving the performance of a modulator, typically in an I/Q modulation system, are described. Input I and Q current modulation signals may be processed to generate a sign signal and a magnitude signal, with the magnitude signal selectively applied to the inputs of a mixer based on the sign signal so as to generate respective I and Q modulation signal components. These may then be combined to generate a composite modulation signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.