Intrinsic Sources of IM Generation.

Abstract

In addition to avoidable sources of intermodulation signals introduced in manufacture or assembly of a multiplex system, there will be some sources inherent to the materials of which the system is constructed. At some point these sources must provide a lower bound to possible system sensitivity. Such a limitation will only be significant if it is reached before thermal noise becomes dominant. At 20 C and a bandwidth of 2500 Hz, the noise power becomes-140 dBm. It is potentially possible to lower either the temperature or the bandwidth by a factor of about 100, so an ultimate sensitivity limit of about-180 dBm is perhaps significant. Above these levels, a number of intrinsic IM mechanisms can be identified. This chapter constitutes a review of significant intrinsic IM sources.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1980
Accession Number
ADA088771

Entities

People

  • George H. Stauss

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Birds
  • Coefficients
  • Current Density
  • Dielectric Permittivity
  • Dielectric Properties
  • Dielectrics
  • Electric Fields
  • Ferromagnetic Materials
  • Frequency
  • Magnetic Fields
  • Materials
  • Microwave Frequency
  • Modulation
  • Thermal Conductivity
  • Transmission Lines
  • Water Vapor
  • X Band

Readers

  • Electrical Engineering
  • Microwave Engineering.
  • Theoretical Analysis.