An analytical compensation for the sample-and-hold distortion

Abstract

In this paper, a new analytical technique for compensation of the sample-and-hold distortion is proposed. The compensation is realized by modification of the system's parameters. The order of the system's function is kept the same. Using small pole displacement assumptions and an adequate set o f adjustment frequencies, the coefficients of the compensated transfer function are obtained by solving a linear system of equations. This approach is essentially analytical. Nevertheless, the procedure can be used repeatedly to improve the compensation results. Examples and comparisons show that the new approach yields a better tradeoff between accuracy and computational effort than other existing techniques. The proposed technique can be easily adapted to compensate for other distortions.

Analytical System Adjustment for the Discrete-to-Continuous Distortion

“…x x distortion introduced in [1]. Now, the method is applicable to monotonic and equiripple (Butterworth, Legendre, Chebyshev, Cauer, etc.)…”

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This paper proposes an extension of the analytical compensation method for the sample-and-hold distortion presented in [1]. That distortion can introduce a degradation of up to 4 dB in the magnitude of the system frequency response.

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