Accession Number : ADA300511

Title :   On the Design of Finite Impulse Response Filters for Precision Quadrature Demodulation,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Inkol, Robert J. ; Saper, Ronald H. ; Herzig, Michel

PDF Url : ADA300511

Report Date : JUL 1995

Pagination or Media Count : 46

Abstract : The accuracy of digital quadrature demodulation can be improved by optimizing the matching of the in-phase and quadrature channel frequency responses. It is shown that an image rejection ratio exceeding 100 dB can be achieved using a pair of finite impulse response filters having 6 and 5 nonzero coefficients, respectively. (AN)

Descriptors :   *SIGNAL PROCESSING, *DIGITAL SYSTEMS, *DEMODULATION, ALGORITHMS, FOURIER TRANSFORMATION, ELECTRONIC WARFARE, OPTIMIZATION, CANADA, ACCURACY, MATHEMATICAL FILTERS, ERROR ANALYSIS, MATCHED FILTERS, DEMODULATORS, BANDPASS FILTERS, FREQUENCY RESPONSE, PHASE DISTORTION, PHASE SHIFT, NUMERICAL QUADRATURE, INTERMEDIATE FREQUENCIES.

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE