Accession Number : ADA113428

Title :   Frequency Compression of Wideband Signals Using a Distributed Sampling Technique,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Conway,L J

PDF Url : ADA113428

Report Date : Nov 1981

Pagination or Media Count : 133

Abstract : Present methods of frequency conversion include heterodyne conversion and harmonic or subharmonic generation. These methods have inherent limitations which restrict their usefulness in a number of applications. A novel frequency compression/expansion system which makes use of sampling techniques is not confined to the same limitations as these conventional frequency conversion systems. The unique integration of delay lines, sampling gates and amplifiers permits frequency compression or expansion as well as amplification of wideband pulsed r.f. signals at frequencies far above the cut-off frequencies of the amplifying devices used. The theory and design of the frequency compression/expansion system is presented in this report. The theoretical results are compared with those obtained from an experimental system and good agreement is demonstrated. (Author)

Descriptors :   *Frequency converters, *Sampling, *Compression, *Expansion, *Bandwidth, Harmonic generators, Frequency conversion, Delay lines, Heterodyning, Radiofrequency pulses, Broadband, Computer programs, Gates(Circuits), Mixers(Electronics), Signals, Integration, Harmonics, Frequency, Distribution, Amplifiers, Canada

Subject Categories : Electrical and Electronic Equipment
      Numerical Mathematics
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE