【摘要】 本文从分析双T网络虚地输出端着手，借助串／并联等效变换，给出双T网络的电压／电流相量图和阻抗图；引入对称化处理概念；界定了双T网络的实际输入阻抗；建立了完备的阻抗方程组，并做了按指定输入阻抗设计电路的示范。更多还原

【Abstract】 The voltage/current phase diagram of twin-T network and impedance diagram are given by means of analysing virtual ground output terminal with the help of equivalent exchange of series/parallel.The concept of symmetrical arrangement is introduced .The actuall input impedance of twin-T network is defined. A perfect set of impedance equations for twin-T network is established and a design demonstration with specified input impedance is made.更多还原