Polar transmitter with feedthrough compensation
US11516054B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2021 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Jun 18, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D5/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit includes a polar transmitter to generate a radio frequency output from amplitude and phase signal components. The polar transmitter includes an amplifier to combine amplitude and phase signal components. A processor is coupled to the polar transmitter to provide the amplitude and phase signal components. The processor includes: a digital modulation circuit to generate a modulated digital signal including in-phase and quadrature signal components and a correction circuit to calculate and apply a complex digital offset for local oscillator feedthrough of the amplifier. The complex digital offset includes an in-phase offset correction factor and a quadrature offset correction factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.