Mobile radio communications device having a PLL that phase locks with two crystal oscillators
US6870428B2 · kind B2 · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2003 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | May 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/06
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mobile radio communications device has a first crystal oscillator for providing a first master clock frequency for the timebase of a first communications system, a second crystal oscillator for providing a second master clock frequency for the timebase of a second communications system, and a phase locked loop connected between the first and second crystal oscillators and arranged to lock the first and second crystal oscillators together so that the two timebases cannot drift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.