Apparatus, methods and articles of manufacture for power amplifier control in a communication system
US7049893B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | May 23, 2006 |
| Priority date | — |
| Expiry date | Mar 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for amplifying a radiofrequency (RF) signal. The apparatus comprises a control circuit including a first transistor, a second transistor, and a ballast resistor coupled between an emitter terminal of the first transistor and a base terminal of the second transistor, such that a control voltage applied to a base terminal of the first transistor controls the amplification of a signal applied to the base terminal of the second transistor. Additional elements may be coupled to the control circuit to improve the performance thereof, including a feedback stabilization circuit, a diode stack circuit, a bypass capacitor and an additional resistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.