View source for 18384001. MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER simplified abstract (Fujitsu Limited)

=MISMATCH ERROR CALIBRATION METHOD AND APPARATUS OF A TIME INTERLEAVING DIGITAL-TO-ANALOG CONVERTER=


==Organization Name==

[[:Category:Fujitsu Limited|Fujitsu Limited]]


[[Category:Fujitsu Limited]]

==Inventor(s)==

[[:Category:Ke Zhang of Beijing (CN)|Ke Zhang of Beijing (CN)]][[Category:Ke Zhang of Beijing (CN)]]

[[:Category:Zhenning Tao of Beijing (CN)|Zhenning Tao of Beijing (CN)]][[Category:Zhenning Tao of Beijing (CN)]]

==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.



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