Method and apparatus for compliance to multiple frequency plans
US6163710A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1997 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Oct 20, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03L7/197
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A mobile radio for use in multiple different frequency plans is disclosed. The multiple different frequency plans, such as land-based plans (cellular, land mobile radio, etc.) and satellite-based plans may employ different frequency bands and, within those different bands, different frequency channel step sizes. The mobile radio employs only a single loop synthesizer to accommodate all of the different plans, including all of the different channel step sizes. It does so by employing a dynamically programmable divider circuit within the single loop synthesizer for macro-adjustment of the local oscillator frequency and a dynamically adjustable reference oscillator within the single loop synthesizer for micro-adjustment of the local oscillator frequency depending upon a recovered carrier signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.