18384001. MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER simplified abstract (Fujitsu Limited)
Contents
- 1 MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER
- 1.1 Organization Name
- 1.2 Inventor(s)
- 1.3 MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER - A simplified explanation of the abstract
- 1.4 Simplified Explanation
- 1.5 Potential Applications
- 1.6 Problems Solved
- 1.7 Benefits
- 1.8 Potential Commercial Applications
- 1.9 Possible Prior Art
- 1.10 Unanswered Questions
- 1.11 Original Abstract Submitted
MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER
Organization Name
Inventor(s)
MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER - A simplified explanation of the abstract
This abstract first appeared for US patent application 18384001 titled 'MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER
Simplified Explanation
The abstract describes a method and apparatus for calibrating mismatch errors in a time interleaved digital-to-analog converter (TI-DAC) by preprocessing the measurement signal to eliminate interferences caused by non-ideal feedback channels.
- Sampling an output signal of a TI-DAC to obtain a measurement signal
- Preprocessing the measurement signal to obtain a preprocessed measurement signal
- Estimating a coefficient of a digital impairment equalizer based on the input signal, output signal, and preprocessed measurement signal
Potential Applications
This technology could be applied in high-speed data converters, communication systems, and signal processing applications where precise calibration of mismatch errors is crucial.
Problems Solved
1. Eliminates interferences caused by non-ideal feedback channels in TI-DACs 2. Improves mismatch error calibration performance of TI-DACs
Benefits
1. Enhanced accuracy and performance of TI-DACs 2. Reduction of errors in high-speed data conversion 3. Improved signal quality in communication systems
Potential Commercial Applications
Optimizing the performance of high-speed data converters in telecommunications equipment, radar systems, and test and measurement instruments.
Possible Prior Art
Prior art may include methods for calibrating mismatch errors in digital-to-analog converters, but the specific approach of preprocessing the measurement signal to eliminate non-ideal feedback channel interferences may be novel.
Unanswered Questions
How does the preprocessing of the measurement signal impact the overall calibration process of the TI-DAC?
The article does not delve into the specific mechanisms by which preprocessing improves the calibration process, leaving room for further exploration and understanding of this aspect.
Are there any limitations or constraints in implementing this calibration method in practical TI-DAC systems?
The article does not address any potential challenges or limitations that may arise when implementing this calibration method in real-world TI-DAC systems, which could be important considerations for engineers and researchers looking to adopt this technology.
Original Abstract Submitted
A mismatch error calibration method and apparatus of a time interleaved digital-to-analog converter. The method includes: sampling an output signal of a time interleaved digital-to-analog converter to obtain a measurement signal; preprocessing the measurement signal to obtain a preprocessed measurement signal; and estimating a coefficient of a digital impairment equalizer according to an input signal of the digital impairment equalizer, an output signal of the digital impairment equalizer, and the preprocessed measurement signal. By preprocessing a non-ideal feedback channel, interferences caused by non-ideality of the feedback channel is eliminated, so as to achieve better mismatch error calibration performance of a TI-DAC.
