Measurements on Noise from Reflex Oscillators

Abstract

A program of measurements on noise output of reflex local oscillators, particularly the 723A/B and 2K33, was undertaken to determine the importance of this factor in receiver design. Considering the two noise sidebands each 2.5 mcps wide and located 30 mcps away from the main output, noise powers ranging from 2.2 to 9.8 x 10"12 watts coming out of 723A/B's were found when loaded for optimum output. Asymmetrical behavior of the noise with electronic tuning was investigated and found to require the new theory presented in the report to follow. Some measurements of the individual noise sidebands and of the noise output as a function of load were found to be in satisfactory agreejnent with theory.

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Document Details

Document Type
Technical Report
Publication Date
Dec 21, 1945
Accession Number
ADA801438

Entities

People

  • J. B. Kuper

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Bandwidth
  • Cavity Resonators
  • Conversion
  • Frequency
  • Frequency Bands
  • Intact Stability
  • K Band
  • Oscillators
  • Preamplifiers
  • Reflectors
  • Resonant Circuits
  • Scientific Research
  • Sidebands
  • Tuned Circuits
  • X Band

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Radar Systems Engineering.
  • Structural Dynamics.

Technology Areas

  • Microelectronics