Title :
Circularly symmetric two-dimensional multiplierless FIR digital filter design using an enhanced McClellan transformation
Author :
Kwan, H.K. ; Chan, C.L.
Author_Institution :
Dept. of Electr. Eng., Windsor Univ., Ont., Canada
fDate :
6/1/1989 12:00:00 AM
Abstract :
A new analytical approach to the determination of the coefficients of the 1st-order McClellan transformation is presented. The resultant 1st-order expression can then be used to design 2-D (2-dimensional) lowpass/highpass, bandpass/bandstop and multiband digital filters from the corresponding 1-D digital filters with a high accuracy in the circularity of magnitude response along the passband cut-off frequency. On comparing the results with those of the original 1st-order McClellan transformation, it is found that the present analytical approach does improve the effectiveness of the original McClellan transformation for 1-D to 2-D digital filter transformation. Based on the resultant 1st-order expression, the realisation of 2-D FIR structures with sum of powers-of-two coefficients is also presented.<>
Keywords :
band-pass filters; band-stop filters; filtering and prediction theory; high-pass filters; low-pass filters; network synthesis; transformers; two-dimensional digital filters; 2D multiplierless filters; FIR digital filter design; McClellan transformation; bandpass; bandstop; circularly symmetric type; coefficients determination; first order transformation; highpass; lowpass; magnitude response; multiband; two dimensional filters; Bandpass filters; Bandstop filters; Circuit synthesis; Filtering; High-pass filters; Low-pass filters; Multidimensional digital filters; Prediction methods; Transformers;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings G
