Another step towards an ideal data acquisition channel
- 1 June 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 40 (3), 659-660
- https://doi.org/10.1109/19.87042
Abstract
In a recent paper (I) a method has been presented for the design of amplitude- and phase-compensating IIR filters. The proce- dure is based on inversion of the transfer function, identified in the :-domain. Unstable poles are reflected into the unit circle, and the spoiled phase response is equalized again using allpass sections. This paper points to the fact that this method is not optimal in the sense that it does not reach the minimum error for a given order (or provides the desired error compensation by using a too high order). By refitting the compensating filter, a lower order filter is obtained with the same per- formance. In the investigated case the order is reduced from 34/34 toKeywords
This publication has 4 references indexed in Scilit:
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- Towards an ideal data acquisition channelIEEE Transactions on Instrumentation and Measurement, 1990
- Linear Chebyshev Approximation in the Complex Plane Using Lawson's AlgorithmMathematics of Computation, 1976
- Synthesis of recursive digital filters using the minimum p-error criterionIEEE Transactions on Audio and Electroacoustics, 1972