【摘要】 提出了一种基于CCC II的n阶电流模式跳耦结构滤波器系数匹配设计方法.通过定义一个从滤波器的输入到第j阶积分器输出的传输函数Hj(s)(Io(j)/Iin),可以方便地求出全极点和含任意传输零点的跳耦结构滤波器的传输函数H(s),并与给定的传输函数Hd(s)的分子、分母系数进行匹配,从而求出滤波器的各个参数.该方法使滤波电路参数设计简单容易,并以四阶巴特沃斯低通跳耦结构滤波器为例进行了参数设计和PSPICE模拟.更多还原

【Abstract】 It is presented a method of the nth order current mode leapfrog-type filter based on CCCII(second generation current controlled conveyor).By defining the transfer function H(s)(Io(j)/Iin) from the filter input to the output of integrator,the corresponding transfer function H(s) of the all-pole filters and filters with arbitrary transmission zeros can be derived.Parameter values of the designed filter can be obtained from the coefficient matching equations based on the comparison between the numerator and denominator polynomials coefficients of H(s) and the given Hd(s).Parameter values of the designed filter can be computed easily.As an example,it is also maked design of parameter values and PSPICE simulation for the realization of the fourth-order Butterworth low-pass leapfrog-type filter.更多还原