Title :
2-D lattice structure and explicit formulas for the design of 2-D digital fan filters
Author :
Qunshan, GU ; Xiyu, Du
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
The relationship between the frequency characteristics of 1-D low-pass filters and 2-D fan filters are introduced and used to develop explicit formulas for the design of fan filters. The method is very simple and efficient. For an arbitrary fan filter with given pass-band ripple, stop-band loss, and transition-band width, the filter´s coefficients can be easily obtained with a pocket calculator. The design of both Butterworth and elliptic function filters is discussed, and design examples are given. Very few multipliers are required to obtain a fan filter with excellent frequency behavior
Keywords :
band-pass filters; multiplying circuits; two-dimensional digital filters; 2D digital fan filters; 2D lattice structure; Butterworth filters; elliptic function filters; filter coefficients; frequency behavior; frequency characteristics; low-pass filters; multipliers; pass-band ripple; pocket calculator; stop-band loss; transition-band width; Digital filters; Digital signal processing; Equations; Frequency; Information filtering; Information filters; Information science; Lattices; Low pass filters; Transfer functions;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112647
