Accession Number : ADD002406

Title :   Complex Filters, Convolvers, and Multipliers.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Bond, James W ; Speiser, Jeffrey M

Report Date : 16 Dec 1975

Pagination or Media Count : 10

Abstract : Many signal processing systems require complex multiplications, complex filters, complex convolutions, or complex cross-correlations. Such applications include sonars, radars, frequency-domain beamformers, and image-processing transform apparatus. As the real multipliers, filters, or corss-convolvers used to implement the corresponding complex operations tend to be relatively high-cost components in terms of dollars, power dissipation, etc., either for the device itself or for the associated driver amplifiers or clock generators, it is desirable to minimize the number of real multipliers, filters, or convolvers used to implement the corresponding complex operation. The complex multipliers, complex filters, and complex-cross convolvers, of this invention require only three real multipliers, three real filters, or three real cross-convolvers, respectively, rather than the usual four. This results in an overall reduction of system size, cost, and power dissipation.

Descriptors :   *SIGNAL PROCESSING, *PATENTS, SONAR SIGNALS, RADAR SIGNALS, SONAR SOUND ANALYZERS, IMAGE PROCESSING, ELECTRIC FILTERS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE