Transmit digital to analog converter (DAC) spur attenuation
US9379727B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2015 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Feb 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0408
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for attenuating transmit digital to analog converter (DAC) spurs is provided. The method begins when a reference voltage is injected into an amplifier. Next, an output of the ground low drop-out regulator is measured and is them compared with the reference voltage. The output of the amplifier is then adjusted based on the results of the comparison. If the reference voltage is higher then the output of the ground low drop-out regulator the output of the amplifier is adjusted to ground. If the reference voltage is lower than the output of the ground low drop-out regulator then the output of the amplifier is adjusted to match the reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.