Multistage modulation architecture and method in a radio
US6915117B2 · kind B2 · utility
9Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 2001 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Nov 10, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/40
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a multiple stage transmitter, and analog signal is modulated and mixed to produce a radio frequency output. A separate mixing frequency signal is provided to each stage. A single frequency synthesizer is used rather than a plurality of frequency synthesizers. In a two-stage system, first and second dividers each receive the output of the frequency synthesizer and deliver a mixing signal to the first and second stages respectively. The modulus of each divider may be selected to minimize spurious signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.