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本文证明了n阶归一化椭圆函数滤波器(EF)最多有[(n-1)/2](?)组正元件值解,CAD结果验证了该理论的正确性。文中还讨论了EF的传输函数对元件值的灵敏度,给出了一个10阶归一化EF的例子,并指出文献[1～3]的参数并非都是最低灵敏度的。
This paper proves that the n-th normalized elliptic function filter (EF) has a maximum of [(n-1) / 2] (?) Positive component solutions, and the CAD results verify the correctness of the theory. We also discuss the sensitivity of the transfer function of EF to the component values and give an example of a 10-order normalized EF, and point out that not all the parameters in [1-3] are the lowest sensitivity.