Multi-level power amplifying circuitry for portable radio transceivers
US4636741A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Nov 1, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/0233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Unique multi-level power amplifying circuitry is described that may be advantageously utilized in duplex portable radio transceivers which may be inserted into a vehicular adaptor for operation from the vehicle battery. Upon detecting the presence of the vehicular adaptor, the power amplifier may be operated at a second set of power levels which include levels greater than a first set of power levels for portable operation. The multi-level power amplifying circuitry of the present invention may be advantageously utilized in a variety of applications where duplex battery-operated radio transceivers may be inserted into a vehicular adaptor for operation from the vehicle battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.