Wideband I/Q Demodulators: Measurement Technique and Matching Characteristics.

Abstract

A simple I/Q demodulator which can be used to measure the amplitude, phase and instantaneous frequency of radar signals over a large bandwidth is investigated for electronic warfare applications. Imbalance errors and DC offsets are minimized by the techniques of component matching and calibration. A DFT technique is used to characterize the imbalances and DC offsets and improved matching characteristics on practical wideband demodulators are also given.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1994
Accession Number
ADA291505

Entities

People

  • Jim J. Lee

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Electronic Warfare
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bandwidth
  • Digital Signal Processing
  • Dual Channel
  • Dynamic Range
  • Electronic Warfare
  • Filters
  • Frequency
  • Frequency Bands
  • Local Oscillators
  • Measurement
  • Modulation
  • National Security
  • Oscillators
  • Oscilloscopes
  • Power Dividers
  • Power Levels
  • Security

Fields of Study

  • Physics

Readers

  • Microwave Engineering.
  • Radio communications and signal processing.

Technology Areas

  • Microelectronics