Frequency plan
US6671500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/403
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system is disclosed for transmitting and receiving signals. The system includes the use of a frequency plan table a system for creating the frequency plan table. The frequency plan table relates carrier frequency channels to the operation of a synthesizer and a plurality of programmable frequency dividers in a locked loop. In a transmitter, a first programmable frequency divider accepts a reference signal and produces a comparison signal. A mixer accepts the reference signal and a transmission signal and produces a loop signal. A second programmable frequency divider accepts the loop signal and produces a loop signal having a divided intermediate frequency signal. A phase detector compares the comparison signal and the loop signal having a divided intermediate frequency and produces an output that controls a variable controlled oscillator. The variable controlled oscillator produces a modulated transmission signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.