Advances in Digital Walsh Analyzers

Abstract

<p>Digital logic techniques emphasizing economical implementation as applied to Walsh function generation and a digital Walsh analyzer are considered. The Walsh function generator design presented features sequency programmability of the dual orthogonal output and the generator operated in the megahertz range with an orthogonality error measurable in nanoseconds. The generator is a central component of the digital Walsh analyzer which provides a pair of Walsh coefficients after only two cycles of an unknown periodic waveform. All analyzer functions, including timing, sample processing and Walsh function generation are provided complete in only seventy integrated circuit modules.</p>