System for detecting current in an output stage of a power amplifier
US7315152B1 · kind B1 · utility
9Cited by
9References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2005 |
| Grant date | Jan 1, 2008 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/408
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system for detecting current in an output stage of power amplifier circuitry in a transmitter of a mobile terminal is provided. In general, the mobile terminal includes power amplifier circuitry, power control circuitry, current detection circuitry, and an inductor that essentially prevents radio frequency coupling between the power control circuitry and the power amplifier circuitry. Based on a voltage across the inductor, the current detection circuitry generates a voltage detection signal indicative of a current in the inductor and thus the current in an output stage of the power amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.