CCCDTA的零-镜实现及其对正交振荡器综合的应用(英文)  

Nullor-Mirror Realizations of CCCDTA and Application to Quadrature Oscillator

作　　者：李永安[1] 

机构地区：[1]咸阳师范学院物理与电子工程学院,陕西咸阳712000

出　　处：《电子器件》2013年第3期320-324,共5页Chinese Journal of Electron Devices

基　　金：陕西省自然科学基金项目(2012JM8017);陕西省教育厅科研计划项目(12JK0496)~~

摘　　要：为综合基于CCCDTA的正交振荡器,根据CCCDTA的端口关系,首次提出了CCCDTA的4个零-镜描述。借助已报道振荡器的NAME方程及其8个零-镜描述,实现2个基于CCCDTA的正交振荡器。通过调节2个CCCDTA的偏置电流,还能电控电路的振荡条件和振荡频率。作为一个例子,当振荡条件满足(IB2>IB1=260μA)时,实现了一个振荡频率为79.62 kHz的正交振荡器。计算机仿真证明所综合的电路正确有效。In order to synthesize the quadrature oscillators employing CCCDTAs, four nullor-mirror representations for CCCDTA are presented by means of the terminal relation of the CCCDTA. Two alternative quadrature oscillators employing CCCDTAs are received by using eight nullor-mirror representations and eight alternative NAME equations of the reported oscillator. Their oscillation condition and frequency can be tuned electronically through tuning bias currents of CCCDTAs. As an example, a quadrature oscillator with oscillation frequency of 79.62 kHz is realized when the oscillation condition ,IB2 〉IB1 = 260 μA, is satisfied. The computer simulation is included to verify the workability of the derived circuits.

关 键 词：电流模式振荡器 电流控制电流差分跨导放大器 零-镜描述 节点导纳矩阵扩展(NAME) 

分 类 号：TN751[电子电信—电路与系统]