Title :
Minimizing sensitivities by restrictions on the largest Q
Author :
Majid, M. ; Barby, J. ; Vlach, J.
Author_Institution :
Dept. of Electr. Eng., Waterloo Univ., Ont., Canada
Abstract :
An optimization method that reduces the Q of individual second-order sections and allows arbitrary passband and stopband responses is described. Similarly to A. Premoli (see IEEE Trans. Circ. Syst., p.609, 1974) the authors allow the order of the network to increase and restrict the maximum Q of any pole. Optimization is done on the poles and zeros of the transfer function; the zeros are restricted to the imaginary axis. For the price of one extra cascaded section, the Q´s of the poles can be significantly reduced. It was that in many cases, the sensitivities of such cascade realizations are actually lower than those of frequency-dependent negative-resistance realization
Keywords :
Q-factor; band-pass filters; cascade networks; poles and zeros; sensitivity analysis; transfer functions; cascaded section; frequency-dependent negative-resistance realization; maximum Q; optimization method; passband responses; poles; second-order sections; stopband responses; transfer function; zeros; Active circuits; Active inductors; Attenuation; Frequency; Minimax techniques; Optimization methods; Passband; Poles and zeros; RLC circuits; Transfer functions;
Conference_Titel :
Circuits and Systems, 1989., IEEE International Symposium on
Conference_Location :
Portland, OR
DOI :
10.1109/ISCAS.1989.100766
