多功能可编程有源rc滤波器与数字元素参数重置

2020 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech) Pub Date : 2020-10-15 DOI:10.1109/EExPolytech50912.2020.9243963

D. Denisenko, N. Prokopenko, N. Butyrlagin, Elena Vikulina

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引用次数: 0

摘要

对多功能可编程有源滤波器(PAF)进行了两种有前途的改进。所提出的二阶PAF电路在运算放大器上实现，提高了q因子的稳定性。给出了基本方程和计算机仿真结果，表明所开发的电路可以实现带通滤波器(BPF)、低通滤波器(LPF)和高通滤波器(HPF)。新的修改的paf允许复位极点频率使用电阻阵列R-2R或数字电位器微电路。比较了该滤波器与基于著名KHN滤波器的PAF的主要特性。

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Multi-Functional Programmable Active RC-Filters with Digital Elements for Parameter Resetting

Two promising modifications of the multi-functional programmable active filters (PAF) are developed and investigated. The proposed PAF circuits of second order are implemented on the operational amplifiers and have an increased stability of the Q-factor. The basic equations and the results of computer simulation are presented, showing that the developed circuits implement band-pass filters (BPF), low-pass filters (LPF) and high-pass filters (HPF). New modifications of the PAFs allow resetting of the pole frequency using resistor arrays R-2R or digital potentiometer microcircuits. A comparison of the main characteristics of the proposed PAF and the PAF based on famous KHN filters is given.

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2020 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech)

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