Mitigation of EMI/RFI Produced by a 1.2 kW Uninterruptible Power Supply

Abstract

Recently installed equipment in naval receiving sites, such as Uninterruptible Power Supplies (UPS), digital telephone switching systems, and personal computers, inject noise into receiver systems via power conductors, cable shields, and grounds, thus reducing the probability of intercept of a signal of interest, in the 2-100 NMHz range. In this thesis a survey of EMI/RFI sources at receiving sites is performed. The effectiveness of a Barrier-Filter- Ground architecture in containing/eliminating EMI/RFI from a 1.2 kW UPS is tested. The spectral and temporal properties of the EMI/RFI from the UPS are recorded. estimates for the EMI/RFI power are obtained from 60Hz to l00kHz, and a possible solution is proposed for obtaining noise power estimates for higher frequencies. Electromagnetic interference (EMI)/Radio-Frequency Interference (RFI), Barrier-filter-ground architecture.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1993
Accession Number
ADA273149

Entities

People

  • Efthimios Mikros

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bandwidth
  • Computers
  • Electromagnetic Interference
  • Electromagnetic Radiation
  • Electromagnetic Shielding
  • Frequency
  • Frequency Bands
  • Ignition
  • Ignition Systems
  • Metamaterial Absorbers
  • Power Supplies
  • Processing Equipment
  • Radiation
  • Radio Frequency
  • Radio Frequency Interference
  • Semiconductors
  • Uninterruptible Power Supplies

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Electronics Engineering
  • Solar Photovoltaics and Thermoelectric Devices.