Elimination of Electromagnetic Interference to Receivers and Sensitive Equipment Generated by Switching Systems

Abstract

Recently installed equipment in naval receiving sites such as digital telephone switching systems, uninterruptible power supplies, laser printers etc. , induce Electromagnetic Interference (EMI) into receiver systems, thus limiting the performance of the receiving site. EMI is injected into receiver systems by conducted, inductive and capacitive paths associated with poor compartment shielding, grounds, or cable shielding. In this thesis, the MITEL SX-20 automatic digital telephone switching system is studied as an EMI source. Temporal and spectral properties of EMI generated by the MITEL SX-20 system are examined over a frequency range of 0 to 100 MHz. The effectiveness of a Barrier, Filter and Ground architecture in containing/eliminating the generated EMI is tested under various operating conditions. Possible solutions are proposed for similar EMI sources.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1994
Accession Number
ADA281643

Entities

People

  • Emmanuel Stelioudakis

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies
  • Sensors

DTIC Thesaurus Topics

  • Ambient Noise
  • Computers
  • Connectors
  • Electrical Engineering
  • Electromagnetic Interference
  • Engineering
  • Frequency
  • Frequency Bands
  • Noise
  • Power Supplies
  • Printed Circuits
  • Radio Frequency
  • Radio Interference
  • Shielding
  • Signal Generators
  • Telephone Lines
  • Uninterruptible Power Supplies

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Electrical Engineering
  • Phased Array Antenna Design.

Technology Areas

  • Directed Energy