Cartesian error-feedback transmitter architecture with a feedforward path
US10205473B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2017 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Nov 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/366
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An error-feedback transmitter includes an input that receives an input signal, and an output that produces an output signal. It also includes an amplifier, located on a main path that carries a main signal between the input and the output. The transmitter includes a feedback path that carries a feedback signal from the output to the input, and a feedback-signal combiner, located on the main path between the input and the amplifier. The feedback-signal combiner negatively combines the feedback signal with the input signal to improve linearity in the output signal. The transmitter includes a feedforward path that carries a feedforward signal from the input toward the output, and a feedforward-signal combiner, located on the feedback path between the output and the feedback-signal combiner. The feedforward-signal combiner negatively combines the feedforward signal with the feedback signal to suppress components of the main signal in the feedback signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.