Accession Number : ADA291505

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

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Lee, Jim J.

PDF Url : ADA291505

Report Date : NOV 1994

Pagination or Media Count : 36

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.

Descriptors :   *MEASUREMENT, *RADAR SIGNALS, *MATCHING, *DEMODULATORS, *PHASE(ELECTRONICS), ALGORITHMS, FREQUENCY, ELECTRONIC WARFARE, CANADA, OFF THE SHELF EQUIPMENT, EMITTANCE, BROADBAND, FRENCH LANGUAGE, EXTRACTION, CALIBRATION, BANDWIDTH, ANALOG TO DIGITAL CONVERTERS, EMITTERS.

Subject Categories : Electrical and Electronic Equipment
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE