基于混合遗传算法的开关电流小波滤波器设计

In this paper, a novel method for the realization of switched-current wavelet filter has been proposed. The transfer function of wavelet filter is approximated by hybrid genetic algorithm and then synthesized by the switched-current filter structure with input distribution and output feedback configuration which is constructed based on signal flow graph and second generation switched-current integrator. The design formulae for circuit parameters are also presented. The Gaussian wavelet filter is used as an example in this paper to illustrate the approximation procedure of transfer function and the construction procedure of switched-current filter structure, in which five switched-current bilinear mapping lossless integrators are employed. Simulation results by ASIZ show the feasibility of the proposed method.