Adaptive Analog Circuit Configuration for Low Noise and Distortion
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Solution Overview
Problem
Analog signal processing systems face challenges in reducing both noise and distortion simultaneously, as techniques to minimize noise often increase distortion, and vice versa, leading to degraded signal quality.
Innovation Solution
The implementation of adaptive noise and distortion reduction circuitry that adjusts its operation based on the amplitude of the input signal, using chopping and dynamic element matching techniques, respectively, to minimize unwanted noise and distortion by configuring the reduction rates or stopping the processes when signal amplitudes exceed certain thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise reduction techniques are applied to reduce signal noise in analog circuitry, then noise is reduced, but signal distortion increases
Solution Approach 1:
The patent applies dynamic configuration of noise reduction circuitry by adaptively adjusting the chopping rate based on signal amplitude. The system transitions from static to dynamic operation, where the noise reduction intensity varies with input signal conditions. This resolves the contradiction by enabling the system to optimize between noise reduction and distortion generation in real-time based on operating conditions.
Solution Approach 2:
The patent changes the operational parameters of the noise reduction circuitry by adjusting the chopping rate according to signal amplitude thresholds. When signal amplitude exceeds the noise threshold, the chopping rate is reduced or stopped to prevent distortion. This parameter adaptation allows the system to maintain low noise for small signals while avoiding distortion for large signals.
2Object-generated harmful factors
If distortion reduction techniques are applied to reduce signal distortion in analog circuitry, then distortion is reduced, but signal noise increases
Solution Approach 1:
The patent implements dynamic configuration of distortion reduction circuitry by adaptively adjusting the dynamic element matching rate based on signal amplitude. The system modifies its distortion reduction intensity in real-time according to input conditions, resolving the contradiction between distortion reduction and noise generation through conditional operation.
Solution Approach 2:
The patent adjusts the operational parameters of distortion reduction circuitry by varying the dynamic element matching rate based on signal amplitude thresholds. When signal amplitude falls below the distortion threshold, the matching rate is reduced or stopped to prevent noise generation. This parameter adaptation enables the system to reduce distortion for small signals while avoiding noise for large signals.
3Object-affected harmful factors
If adaptive configuration is applied to reduce both noise and distortion, then signal quality is enhanced, but device complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the signal amplitude is continuously monitored and compared against predetermined thresholds. Based on this feedback, the control logic automatically adjusts the chopping rate and dynamic element matching rate. This closed-loop feedback system resolves the contradiction by enabling intelligent, adaptive optimization of signal quality without requiring complex manual configuration.
Solution Approach 2:
The patent implements self-service through automatic threshold comparison and rate adjustment mechanisms. The noise and distortion reduction circuitry autonomously configures itself based on signal conditions without external intervention. This self-configuration capability reduces the practical complexity burden on the user while maintaining enhanced signal quality.
Data Source
AI summary
Noise and distortion reduction in a signal processed through analog circuitry includes providing noise reduction circuitry to reduce signal noise generated by at least one analog circuit element. The noise reduction circuitry is adaptively configured to adjust a rate to apply noise reduction to the signal without introducing unwanted distortion. Distortion reduction circuitry is adaptively configured to adjust a rate to apply distortion reduction to the signal without introducing unwanted noise. The signal is processed through the analog circuitry using the adaptively configured noise reduction circuitry and adaptively configured distortion reduction circuitry to reduce both noise and distortion in the signal.