模拟进化型切比雪夫跨导滤波器的研究  

Research of the Analogue Evolvable Chebyshev Trans-Conductance Filter

作　　者：李尧[1] 董姝敏 王洪刚[3] 张志美[3] 乔双[3] 

机构地区：[1]北华大学理学院物理系,吉林132013 [2]吉林师范大学信息技术学院,吉林四平136000 [3]东北师范大学物理学院,长春130024

出　　处：《电子器件》2007年第1期233-236,共4页Chinese Journal of Electron Devices

基　　金：国家高技术发展计划项目资助(2002AA632080)

摘　　要：给出一种模拟进化型跨导滤波器的硬件结构,提出了一种改进的自适应遗传算法,构造了适合滤波器参数进化的适应度函数,有效地解决了遗传算法的全局收敛性问题和收敛速度缓慢的弊病.在高频性能比较好的跨导滤波器的设计中,采用级联法所构成的四阶切比雪夫跨导滤波器能够满足其在阻带、通带以及过渡带方面的性能要求,对其实效性进行了仿真和验证,进化的参数数值与理论结果符合得非常好.A kind of hardware structure of an analogue evolvable trans-conductance filter is given. An improved self-adaptive genetic algorithm is presented. Evolution fimess function for filter parameter has been built, it solves efficiently problem of global convergence and disadvantage of convergence slow speed. In the course of better perforrnance of high frequency trans-conductance filter designing, structure of Four-order Chebyshev Trans-conductance Filter is built by cascade method, which is able to meet performance request in its stop-band, passing band, transition band, and the practicality has been simulated and verified. The value of evolutionary parameters are in line with theoretical value exceedingly.

关 键 词：进化型硬件 遗传算法 跨导滤波器 仿真 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]