Dual-Filter Circuitry Distortion Corrector for Signal Integrity
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Solution Overview
Problem
Existing electrical circuitry introduces distortions in signal transmission, particularly in measurement devices like oscilloscopes, due to capacitances and inductivities in the signal path, requiring significant computational resources for de-embedding, which can lead to mismatched measurement parameters if performed after other signal chain steps.
Innovation Solution
A circuitry distortion corrector with a dual-filter system, comprising a High Frequency (HF) correction filter using equally spaced frequencies and a Low Frequency (LF) correction filter using logarithmically spaced frequencies, allowing for real-time de-embedding across the full frequency spectrum, reducing computational requirements and maintaining accurate measurement parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If de-embedding is performed using traditional methods in measurement devices, then signal distortion correction is achieved, but computational resources are excessively consumed and measurement parameters may become mismatched
Solution Approach 1:
The patent divides the frequency spectrum into two distinct segments: high frequency range handled by a first correction filter with equally spaced frequencies, and low frequency range handled by a second correction filter with logarithmically spaced frequencies. This segmentation allows each filter to be optimized for its specific frequency range, reducing the overall computational burden while maintaining correction precision across the full spectrum.
Solution Approach 2:
The patent changes the frequency spacing parameter differently for different frequency ranges: equally spaced frequencies for high frequencies and logarithmically spaced frequencies for low frequencies. This parameter adaptation allows the system to achieve effective distortion correction with fewer computational resources by matching the frequency spacing to the characteristics of each range.
2Measurement precision
If de-embedding is performed after other signal chain steps, then signal distortion is corrected, but measurement parameters become mismatched
Solution Approach 1:
The patent implements the distortion correction function before signal acquisition and other measurement steps in the signal chain. By performing de-embedding preliminarily, the corrected signal parameters are established upfront, ensuring that subsequent measurement operations work with already-corrected data and avoiding parameter mismatch issues that would arise from post-processing correction.
3Device complexity
If a single correction filter is used for the full frequency spectrum, then device complexity is reduced, but correction precision varies across different frequency ranges
Solution Approach 1:
The patent segments the frequency spectrum into high and low frequency ranges, each handled by a dedicated correction filter. This segmentation enables each filter to be optimized for its specific frequency range with appropriate frequency spacing (equal for high, logarithmic for low), achieving high correction precision across the full spectrum while keeping each individual filter relatively simple.
Solution Approach 2:
The patent applies different frequency spacing strategies to different frequency ranges: equally spaced frequencies for the high frequency range and logarithmically spaced frequencies for the low frequency range. This local optimization ensures that each frequency range receives the most appropriate correction approach for its characteristics, maximizing overall precision.
Data Source
AI summary
The present disclosure provides a circuitry distortion corrector for correcting distortions of electrical signals. The circuitry distortion corrector comprises a first correction filter that filters the received signals, and a second correction filter that is coupled to the first correction filter and filters the signals that are filtered by the first correction filter. The first correction filter operates based on first filter coefficients that are based on first value tuples, each first value tuple comprising a first frequency and a respective first circuitry characterizing value, and wherein the first frequencies are equally spaced apart, and the second correction filter operates with second filter coefficients that are based on second value tuples, each second value tuple comprising a second frequency and a respective second circuitry characterizing value, wherein the second frequencies are logarithmically spaced apart.