Two-Tone Intermodulation in Diode Mixers,

Abstract

This report explores, experimentally and theoretically, the problem of minimizing second- and third-order intermodulation distortion in diode mixers. A numerical technique is presented which can be used to calculate intermodulation levels with unprecedented accuracy, and it is used to identify circuit and diode parameters which maximize dynamic range. It is shown that intermodulation distortion is minimized by using low diode junction capacitance and series resistance, short-circuit embedding impedances, and high local oscillator level. It is also shown that certain conditions which may optimize conversion loss, such as image enhancement, may severely exacerbate intermodulation. The theory is applicable at RF levels below saturation.

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1986
Accession Number
ADA179927

Entities

People

  • Stephen A. Maas

Organizations

  • The Aerospace Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Air Force
  • Capacitance
  • Circuits
  • Conversion
  • Differential Equations
  • Distortion
  • Embedding
  • Equations
  • Equivalent Circuits
  • Frequency
  • Impedance
  • Intermodulation
  • Local Oscillators
  • Resistance
  • Saturation
  • Short Circuits

Fields of Study

  • Physics

Readers

  • Electronics Engineering