Power amplifier integrated circuit with compensation mechanism for temperature and output power
US7948317B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | May 24, 2011 |
| Priority date | — |
| Expiry date | Nov 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier integrated circuit, which generates an RF output signal by amplifying an RF input signal, includes a thermal-sensing circuit, a feedback circuit, a logic judging circuit, an adjusting circuit, and an amplifying circuit. The thermal-sensing circuit generates a thermal sensing signal according to the operational temperature, and the feedback circuit generates a power compensation circuit according to power variations in the RF output signal. The logic judging circuit outputs a compensation signal according to the thermal sensing signal and the power compensation signal. The adjusting circuit adjusts the level of the RF input signal according to the compensation signal, thereby generating a corresponding 1st stage RF signal. The amplifying circuit can amplify the 1st stage RF signal, thereby generating the corresponding RF output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.