Radio frequency device including a power amplifier circuit and a stabilizer circuit, and mobile transceiver terminal including such a device
US6407639B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | May 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/504
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency device and mobile terminal having this device, includes a power amplifier (PA) for radio frequency signals (IRF, ORF) and a stabilizer (STB) for controlling power variations of the radio frequency output signal (ORF) as a function of variations of a reference voltage (VCON). The stabilizer is equal to a nominal resistance (RN) having a predetermined value as a function of an isopower curve (H, DH) of the power amplifier and generates for the power amplifier a supply voltage (VPA) in dependence on the reference voltage (VCON) and the nominal resistance (RN), so that the power consumption (PPA) and output power (POUT) are independent of the real internal resistance (RPA) of the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.