CAJ | 학술논문

级联型有源滤波器的设计技术已经非常成熟，但二阶节电路的综合是尚未解决的难题。根据有源网络综合理论，给出了有源电路新拓扑结构的综合方法。该方法通过给定的电压符号传输函数，使用关联无穷变量来描述被综合电路中节点导纳矩阵和端口导纳矩阵中的零子和任意子，通过导纳矩阵的扩展导出电路的拓扑结构。这种方法可以综合出新的电路结构；给出了二阶有源带阻滤波器新电路的综合实例。仿真和实测结果验证了该方法的正确性。
급련형유원려파기적설계기술이경비상성숙，단이계절전로적종합시상미해결적난제。근거유원망락종합이론，급출료유원전로신탁복결구적종합방법。해방법통과급정적전압부호전수함수，사용관련무궁변량래묘술피종합전로중절점도납구진화단구도납구진중적령자화임의자，통과도납구진적확전도출전로적탁복결구。저충방법가이종합출신적전로결구；급출료이계유원대조려파기신전로적종합실례。방진화실측결과험증료해방법적정학성。
The design technique for cascaded active filter is mature, but the synthesis of biquadratic circuit is still need to be further studied. Based on the theory of active network synthesis, a method of new active circuit synthesis is given which uses symbolic voltage transfer function and linked infinity variables to describe both Nullors in the nodal admittance matrix and port admittance matrix of a synthesized circuit. The circuit topology is derived by admittance matrix expansion. A new 2nd-order active-RC bandstop filter synthesis example is presented by using privotal expansion on the port matrix. The simulation and the measured results verify the correctness of the given method.