Title :
Compensation of sample-and-hold distortion through zero insertion
Author :
Seara, R. ; Valle, O.T. ; Filho, S. Noceti ; Bermudez, J.C.M.
Author_Institution :
Dept. of Electr. Eng., Univ. Federal de Santa Catarina, Florianopolis, Brazil
Abstract :
An analytic method for the compensation of the (sin x)/ x distortion inherent to digital or sampled-data systems with continuous-time output signals is presented. The compensation is achieved through the insertion of a pair of finite zeros in the transfer function of the system. Simple expressions are provided for the calculation of the magnitude and the Q-factor of the zeros of the compensation function. An example illustrates the efficiency and the applicability of the method. Simulation results are presented for a second-order Chebyshev filter
Keywords :
Q-factor; compensation; electric distortion; network analysis; poles and zeros; sample and hold circuits; transfer functions; Q-factor; compensation; continuous-time output signals; finite zeros; sample/hold distortion; sampled-data systems; second-order Chebyshev filter; transfer function; zero insertion; Distortion; Filters; Frequency; Instruments; Laboratories; Passband; Predistortion; Sampling methods; Space vector pulse width modulation; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112588
