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Differential chopping controller with high-resolution and accuracy using digital signal processor.

Eli Flaxer1, Sharly Fleischer2

  • 1AFEKA - Tel-Aviv Academic College of Engineering, 69107 Tel-Aviv, Israel.

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Summary
This summary is machine-generated.

This study introduces a digital mixer using a digital signal processor (DSP) for superior frequency separation. This advanced circuit overcomes analog limitations, offering enhanced signal processing capabilities.

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Area of Science:

  • Digital Signal Processing
  • Electronic Circuits
  • Signal Modulation

Background:

  • Analog mixers face limitations in separating closely spaced frequencies, often necessitating additional filtering stages.
  • Existing analog mixer technologies present challenges in achieving high-fidelity signal separation for diverse applications.

Purpose of the Study:

  • To present a novel digital mixer design utilizing a digital signal processor (DSP).
  • To demonstrate superior frequency separation capabilities compared to traditional analog mixers.
  • To offer a flexible and practically unlimited output signal through software-based processing.

Main Methods:

  • Implementation of a digital mixer circuit based on a digital signal processor (DSP).
  • Development of software algorithms to compute the sum or difference of input signals.
  • Comparative analysis of frequency separation performance against analog mixer benchmarks.

Main Results:

  • The digital mixer exhibits excellent capabilities in separating signals with close frequencies.
  • The DSP-based approach eliminates the need for supplementary filtering stages common in analog designs.
  • The software-driven output function provides virtually unlimited signal processing potential.

Conclusions:

  • Digital signal processor-based mixers offer significant advantages over analog counterparts, particularly in frequency separation.
  • The presented digital mixer design provides a flexible and high-performance solution for signal processing tasks.
  • This technology paves the way for advanced signal modulation and analysis with enhanced precision.