中文摘要：

提出了一种运用符号和数值计算与离散非线性优化相结合的滤波器设计方法——设计空间法，把滤波器的技术指标，即滤波器设计中要用到的一组参数映射到设计空间，并根据给定的准则寻找这一设计空间的最佳解决方案。然后介绍了一种新型的具有独立零点设置的基本二阶开关电容电路，最后通过实例阐述了用设计空间法设计一开关电容（SC）低通滤波器，实验证明了该方法的可行性，并且得到了预期的效果。

英文摘要：

A kind of active filter design method, design dimension method by using sign and number calculation combined with dispersed non-linear optimization is presented in this paper. This mothed is mapping a set of parametes of filtes to design dimension and according to the given technique index to search the best solution. Then a new style of basic two-order switched-capacitor circuit with absolute zero setting is introduced. A example for SC low-pass filter on design dimension methods is discussed in the end, which proves the design is feasible by using design dimension method, and gains the expected result.