Title :
VLSI realization of four-port ear-type transmission lattice filter
Author :
Jia, Lin ; Newcomb, Robert K.
Author_Institution :
Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA
Abstract :
In this paper, four-port ear-type transmission lattice filters were realized with CMOS VLSI circuit. The basic sections are the revisions of degree one AR (Auto Regressive) and MA (Moving Average) sections and are characterized by transfer scattering matrices. This makes it easy to cascade them to form more complex structures. In our design, the filters were realized with active switched current circuits in which active current mirrors are used to get better current reflection. As an application, a degree three Butterworth lowpass filter was designed and good results were obtained.
Keywords :
Butterworth filters; CMOS analogue integrated circuits; S-matrix theory; VLSI; active filters; autoregressive moving average processes; cascade networks; current mirrors; ear; lattice filters; low-pass filters; multiport networks; physiological models; switched current circuits; switched filters; AR sections; ARMA filter; Butterworth lowpass filter; CMOS VLSI circuit; MA sections; active SI circuits; active current mirrors; active switched current circuits; cascade; cochlea model; ear model; ear-type transmission lattice filters; four-port lattice filters; transfer scattering matrices; Circuits; Delay estimation; Digital filters; Ear; Electronic mail; Humans; Impedance; Lattices; Scattering; Very large scale integration;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010528
