Energy efficient, low distortion amplification apparatus
US9231538B1 · kind B1 · utility
3Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | Dec 26, 2013 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45731
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An energy efficient, low distortion amplification apparatus includes: a differential amplifier having a pair of differential inputs, a pair of outputs, and a bias current control input; a digital delay having an n-bit word input and an m-bit word output; a digital-to-analog converter (DAC) having an input coupled to the output of the digital delay and a pair of differential outputs coupled to the pair of differential inputs of the differential amplifier; and a bias current controller having an input coupled to the digital delay and having an output coupled to the bias current control input of the differential amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.