Power ranging transmit RF power amplifier
US7795968B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2009 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An RF PA operable in two or more selectable power ranges is disclosed. Switches configure the circuit for each range such that an amplifier device corresponding to the range provides final amplification, and all lower power amplifier devices also amplify the signal. An exemplary design includes a low power amplifier configurable for operation solo, or in parallel with a medium power amplifier, to deliver an appropriately matched signal either directly to the RF PA output, or first to the input of a high power amplifier for the highest power range. The signal in all ranges of the exemplary design is conditioned in part by the matching circuitry disposed between the high power amplifier and the RF PA output, which traverses no switches in high power range operation. The entire RF PA, including switches, control and matching circuitry, is fabricated on a single monolithic integrated circuit, an achievement may be facilitated by UTSI CMOS processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.