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Third order quadrature oscillator and its application using CDBA
Analog Integrated Circuits and Signal Processing ( IF 1.4 ) Pub Date : 2021-03-17 , DOI: 10.1007/s10470-021-01812-3
Mourina Ghosh , Shekhar Suman Borah , Ankur Singh , Ashish Ranjan

This research article comes with three novel topologies of Voltage Mode (VM) third order Quadrature Sinusoidal Oscillators (QSOs) using Current Differencing Buffered Amplifier (CDBA) as an active device with grounded and virtually grounded passive components. An implementation perspective of the prototype circuits follows a specific class of filter specifically Low pass (LP), High pass (HP) and All pass (AP) including an integrator/ differentiator in a closed loop. To justify the feasibility of the proposed QSO configurations, time response and frequency response outputs are generated through PSPICE simulation using 180 nm CMOS process parameters. In addition, the proposed configurations are experimentally tested using commercially available Current Feedback Operational Amplifier (CFOA) as IC AD844AN for the implementation of CDBA active block that validates the theoretical propositions and computer simulation results. The other performance analysis viz. sensitivity, non-ideality, frequency stability, phase noise analysis and Monte-Carlo analysis are also discussed for the proposed structures. An application workability of the proposed QSOs configuration is used to determine the transmission and reception signal of Quadrature Amplitude Modulation (QAM) and Quadrature Phase Shift Keying (QPSK) techniques.



中文翻译:

三阶正交振荡器及其在CDBA中的应用

这篇研究文章提供了三种新颖的电压模式(VM)三阶正交正弦振荡器(QSO)拓扑,这些拓扑使用电流差动缓冲放大器(CDBA)作为具有接地和虚拟接地无源元件的有源器件。原型电路的实现透视图遵循一类特定的滤波器,特别是低通(LP),高通(HP)和全通(AP),包括一个闭环中的积分器/微分器。为了证明所提出的QSO配置的可行性,通过使用180 nm CMOS工艺参数的PSPICE仿真生成了时间响应和频率响应输出。此外,使用市售的电流反馈运算放大器(CFOA)作为IC AD844AN对所建议的配置进行了实验测试,以实现CDBA有源模块,从而验证了理论主张和计算机仿真结果。其他性能分析即。还讨论了拟议结构的灵敏度,非理想性,频率稳定性,相位噪声分析和蒙特卡洛分析。所提出的QSOs配置的应用可操作性用于确定正交幅度调制(QAM)和正交相移键控(QPSK)技术的发送和接收信号。还讨论了所提出结构的相位噪声分析和蒙特卡洛分析。所提出的QSOs配置的应用可操作性用于确定正交幅度调制(QAM)和正交相移键控(QPSK)技术的发送和接收信号。还讨论了所提出结构的相位噪声分析和蒙特卡洛分析。所提出的QSOs配置的应用可操作性用于确定正交幅度调制(QAM)和正交相移键控(QPSK)技术的发送和接收信号。

更新日期:2021-03-17
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