Electronically Tunable TISO Voltage-Mode Universal Filter Using Two LT1228s

IF 1.3 Q3 ENGINEERING, MULTIDISCIPLINARY

International Journal of Engineering and Technology Innovation Pub Date : 2021-12-20 DOI:10.46604/ijeti.2021.8499

May Phu Pwint Wai, W. Jaikla, Surapong Siripongdee, A. Chaichana, P. Suwanjan

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引用次数: 1

Abstract

This study aims to design an electronically tunable voltage-mode (VM) universal filter utilizing commercially available LT1228 integrated circuits (ICs) with three-input and single-output (TISO) configuration. With the procedure based on two integrator loop filtering structures, the proposed filter consists of two LT1228s, four resistors, and two grounded capacitors. It realizes five filter output responses: low-pass, all-pass, band-reject, band-pass, and high-pass functions. By selecting input voltage signals, each output responses can be achieved without changing the circuit architecture. The natural angular frequency can be controlled electronically. The input voltage nodes Vin1 and Vin3 possess high impedance. The output node has low impedance, so it can be cascaded to other circuits. The performance of the proposed filter is corroborated by PSpice simulation and hardware implementation which support the theoretical assumptions. The result shows that the range of total harmonic distortion (THD) is lower than 1%, and that the higher the temperature is, the lower the natural angular frequency is.

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使用两个LT1228的可电子调谐TISO电压模式通用滤波器

本研究旨在设计一种电子可调谐电压模式（VM）通用滤波器，该滤波器利用市售的LT1228集成电路（IC），具有三输入单输出（TISO）配置。采用基于两个积分器环路滤波结构的程序，所提出的滤波器由两个LT1228、四个电阻器和两个接地电容器组成。它实现了五种滤波器输出响应：低通、全通、带阻、带通和高通功能。通过选择输入电压信号，可以在不改变电路结构的情况下实现每个输出响应。自然角频率可以通过电子方式控制。输入电压节点Vin1和Vin3具有高阻抗。输出节点具有低阻抗，因此可以级联到其他电路。PSpice仿真和支持理论假设的硬件实现验证了所提出滤波器的性能。结果表明，总谐波失真范围小于1%，温度越高，固有角频率越低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Engineering and Technology Innovation ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

12 weeks

期刊介绍： The IJETI journal focus on the field of engineering and technology Innovation. And it publishes original papers including but not limited to the following fields: Automation Engineering Civil Engineering Control Engineering Electric Engineering Electronic Engineering Green Technology Information Engineering Mechanical Engineering Material Engineering Mechatronics and Robotics Engineering Nanotechnology Optic Engineering Sport Science and Technology Innovation Management Other Engineering and Technology Related Topics.