Parametric Amplifier Input Noise Temperature Degradation caused by an Interfering Signal in or near the Paramp Passband

Abstract

The dependence of the input noise temperature of a parametric amplifier upon the pump source AM noise level, when a strong interfering signal is present in or near the paramp passband, is examined both theoretically and experimentally. An equation has been derived that predicts a contribution to the paramp input noise temperature which is linearly proportional to interfering signal power, paramp gain, and pump AM noise level. Experimental verification was achieved in comparison of various klystron, gunn, and impatt oscillator pumps exciting a typical military satellite communication receiver paramp.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1972
Accession Number
AD0751652

Entities

People

  • William S. Phillips

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Amplitude Modulation
  • Bandwidth
  • California
  • Communication Channels
  • Communication Satellites
  • Electronics
  • Electronics Laboratories
  • Generators
  • Klystrons
  • Local Oscillators
  • Low Noise Amplifiers
  • Measurement
  • Power Spectra
  • Satellite Communications
  • Test Sets
  • Varactor Diodes

Fields of Study

  • Engineering
  • Physics

Readers

  • Electronics Engineering
  • Plasma Physics / Magnetohydrodynamics

Technology Areas

  • Space
  • Space - Hall-Effect Thruster