Accurate sign change for radio frequency transmitters
US11949769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2022 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | May 2, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/336
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments disclosed herein relate to improving a power output of a transmitter of an electronic device. To do so, the transmitter may include signal selection circuitry to adjust a sign selection signal to accurately transition between polarities of a quadrature (e.g., I or Q) component signal stored in or for which an indication is stored in a storage cell of a radio frequency digital-to-analog converter. The sign selection signal may generate a separate adjusted sign selection signal for each polarity of each quadrature component signal such that a transition of the selection signal between a first value and a second value (e.g., logic high and low) occurs when the respective quadrature (e.g., +/− and I/Q) component signal is a logic low. In this way, the signal selection circuitry reduces an error pulse in the output of the transmitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.