System and method for adjusting amplifier bias current based on input signal envelope tracking
US12424976B2 · kind B2 · utility
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28References
26Claims
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Key dates
| Filing date | Feb 9, 2022 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Mar 1, 2044 |
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 having an envelope and generating an envelope detection signal corresponding to the envelope. A bias current provided to an amplifier circuit is adjusted based upon the envelope detection signal, the amplifier circuit including an amplifier and a transformer. The transformer is configured to establish a magnetically coupled feedback loop from an output of the amplifier to an input of the amplifier. An output signal is provided, by the amplifier circuit, in response to the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.