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Area of Science:

  • Electrical Engineering
  • Wireless Communications
  • Signal Processing

Background:

  • Electromagnetic interference (EMI) is critical to manage in wireless communications to prevent performance issues and system failures.
  • Existing EMI measurement systems face limitations in dynamic range, hindering comprehensive monitoring.
  • Time-domain EMI measurement receivers require robust acquisition systems for accurate data capture.

Purpose of the Study:

  • To design and implement an acquisition system for a time-domain EMI measurement receiver.
  • To achieve a high dynamic range for improved EMI monitoring.
  • To overcome the dynamic range limitations of conventional analog-to-digital converters (ADCs).

Main Methods:

  • A modular hardware system comprising conditioning, data acquisition/processing, and clock generation modules.
  • A software system with an interactive interface and an automatic sampling/processing procedure.
  • A novel multi-stage architecture combined with a data reconstruction algorithm for enhanced dynamic range acquisition.

Main Results:

  • The implemented system captures analog waveforms with a 300 MHz bandwidth and a 1 GS/s sampling rate.
  • A maximum dynamic range of 96.43 dB was achieved, significantly exceeding the typical 52 dB of a single ADC.
  • The proposed architecture effectively bypasses conventional ADC dynamic range constraints.

Conclusions:

  • The developed acquisition system provides a substantial improvement in dynamic range for time-domain EMI measurements.
  • This advancement enables more effective monitoring of potential EMI in wireless communication systems.
  • The novel approach offers a scalable solution for future high-dynamic-range signal acquisition needs.