System and method for adjusting amplifier bias using envelope tracking
US12149216B2 · kind B2 · utility
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17References
18Claims
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Key dates
| Filing date | May 3, 2022 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | May 3, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/537
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method which includes receiving an input signal and providing, by an amplifier circuit, an output signal in response to the input signal, the output signal having an envelope. An envelope detection signal corresponding to the envelope of the output signal is generated. A bias current provided to an amplifier circuit is adjusted based upon the envelope detection signal. The amplifier circuit includes an amplifier and a transformer, the transformer being configured to establish a magnetically coupled feedback loop from an output of the amplifier to an input of the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.