An Analysis of Various Digital Filter Types for Use as Matched Pre-Sample Filters in Data Encoders
AuthorHicks, William T.
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AbstractThe need for precise gain and phase matching in multi-channel data sampling systems can result in very strict design requirements for presample or anti-aliasing filters. The traditional use of active RC-type filters is expensive, especially when performance requirements are tight and when operation over a wide environmental temperature range is required. New Digital Signal Processing (DSP) techniques have provided an opportunity for cost reduction and/or performance improvements in these types of applications. This paper summarizes the results of an evaluation of various digital filter types used as matched presample filters in data sampling systems.
SponsorsInternational Foundation for Telemetering
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