基于压差增益放大器的阴影滤波器的比较研究

2020 6th International Conference on Engineering, Applied Sciences and Technology (ICEAST) Pub Date : 2020-07-01 DOI:10.1109/ICEAST50382.2020.9165352

P. Moonmuang, T. Pukkalanun, W. Tangsrirat

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引用次数: 5

摘要

通过与经典二阶滤波器的比较，确定了基于电压增益差放大器(VDGA)的电压模阴影滤波器的实现方法。所实现的阴影滤波器采用3个vga和2个接地电容，可同时实现二阶低通和带通滤波器响应。固有角频率(ωA)和质量因子(QA)可以通过变频器的跨导增益来调节。通过0.25μm CMOS工艺的仿真结果，比较了所实现的阴影滤波器与经典二阶滤波器的性能。

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Voltage Differencing Gain Amplifier-Based Shadow Filter: A Comparison Study

This study determines the voltage-mode shadow filter realization based on voltage differencing gain amplifier (VDGA) in comparison with a classical second-order filter. The realized shadow filter uses three VDGAs and only two grounded capacitors, and can simultaneously realize second-order lowpass and bandpass filter responses. The natural angular frequency (ωA) and the quality factor (QA) can be tuned by means of the VDGAs’ transconductance gains. The performance comparison between the realized shadow filter and the classical second-order filter is demonstrated through simulation results with 0.25μm CMOS technology.

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2020 6th International Conference on Engineering, Applied Sciences and Technology (ICEAST)

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