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CCCIIs-Based First-Order All-Pass Filter and Quadrature Oscillators

机译:基于CCCII的一阶全通滤波器和正交振荡器

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This paper introduces a current-mode first-order all-pass filter (APF) and its application in quadrature oscillator (QO) based on CCCII. The proposed filter can provide inverting and noninverting all-pass functions with a same circuit topology, it uses two CCCIIs and one grounded capacitor. Moreover, the first-order all-pass filter was applied in current-mode sinusoidal quadrature oscillators with the design based on block diagrams. The introduced oscillators can provide four phase-quadrature signals which independently control the condition of oscillation (CO) and frequency of oscillation (FO). The proposed oscillators consist of three CCCIIs and two grounded capacitors. The proposed APF and QOs have high output impedance which can directly drive load without additional current buffer. In addition, they use only grounded capacitors which are very appropriate to future development into an integrated circuit. The results of PSPICE simulation program correspond to the theoretical analysis.
机译:本文介绍了一种电流模式一阶全通滤波器(APF)及其在基于CCCII的正交振荡器(QO)中的应用。所提出的滤波器可以在相同的电路拓扑中提供反相和同相全通功能,它使用两个CCCII和一个接地电容器。此外,基于框图的设计将一阶全通滤波器应用于电流模式正弦正交振荡器。引入的振荡器可以提供四个相位正交信号,分别独立地控制振荡条件(CO)和振荡频率(FO)。建议的振荡器由三个CCCII和两个接地电容器组成。拟议的APF和QO具有高输出阻抗,无需额外的电流缓冲器即可直接驱动负载。此外,他们仅使用非常适合将来发展为集成电路的接地电容器。 PSPICE仿真程序的结果与理论分析相符。

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