Accession Number : AD0685888

Title :   QUADRATURE SAMPLING OF HIGH-FREQUENCY WAVEFORMS,

Corporate Author : TEXAS UNIV AUSTIN DEFENSE RESEARCH LAB

Personal Author(s) : Grace,O. D. ; Pitt,S. P.

Report Date : 1968

Pagination or Media Count : 2

Abstract : The quadrature-sampling technique, which obtains samples of the quadrature components of a high-frequency band-limited waveform by direct sampling of the waveform, is shown to lead to an exact interpolation formula. In this formula, the quadrature components of the signal are represented explicitly by low-pass interpolation formulas that greatly facilitate digital processing of the signal when compared to commonly used sampling formulas. For example, the amplitude modulation (envelope) and phase modulation of a signal can be computed directly from these quadrature components. (Author)

Descriptors :   (*SIGNALS, SAMPLING), HIGH FREQUENCY, INTERPOLATION, DATA PROCESSING, MODULATION

Subject Categories : Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE