Enhancement of multiplication factor of capacitor using single current follower differential input transconductance amplifier

IF 1.6 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Numerical Modelling-Electronic Networks Devices and Fields Pub Date : 2024-08-07 DOI:10.1002/jnm.3279

Ajishek Raj, Meghana Shrivastava, D. R. Bhaskar, Pragati Kumar

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引用次数: 0

Abstract

This paper presents a new circuit approach to realize a capacitance multiplier circuit with positive and negative multiplication factors. Based on this approach, two new implementations of positive and negative grounded capacitance multiplier (GCM) circuits are proposed, which utilize only one current follower differential input transconductance amplifier (CFDITA), in conjunction with only one resistor and one virtually grounded capacitor. The presented GCM circuits can enhance a low capacitance value to a very high value (used in low frequency applications), up to 9202 times its original value. An important aspect of the proposed circuits involves designing a lossy parallel inductor circuit by interchanging the passive elements (RC:CR transformation) with each other. The obtained value of the capacitance and inductance can be controlled independently and electronically through the transconductance of CFDITA. The practical usability of the suggested circuits as first and second order filters is discussed. The functionality of the proposed GCM circuits is validated using CMOS CFDITA implemented with 180 nm TSMC technology parameters. Experimental verification of the proposed circuits and application examples is reinforced through the utilization of CFDITA implemented with readily available ICs AD844 and LM13700. These outcomes emphasize the dependability of the suggested circuits.

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利用单电流跟随器差分输入跨导放大器提高电容器的乘法系数

本文提出了一种实现具有正负乘法因子的电容乘法器电路的新电路方法。基于这种方法，本文提出了正负接地电容乘法器 (GCM) 电路的两种新实现方法，它们仅利用一个电流跟随器差分输入跨导放大器 (CFDITA)，结合一个电阻器和一个实际接地电容器。所提出的 GCM 电路可将低电容值提升到非常高的数值（用于低频应用），最高可达原值的 9202 倍。所提电路的一个重要方面是通过相互交换无源元件（RC:CR 变换）来设计有损并联电感电路。所获得的电容和电感值可通过 CFDITA 的转导进行独立的电子控制。我们讨论了所建议电路作为一阶和二阶滤波器的实际可用性。利用 CMOS CFDITA（以 180 纳米 TSMC 技术参数实现）验证了所建议的 GCM 电路的功能。通过利用现有集成电路 AD844 和 LM13700 实施 CFDITA，加强了对所提电路和应用实例的实验验证。这些成果强调了建议电路的可靠性。

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 Numerical Modelling-Electronic Networks Devices and Fields 工程技术-工程：电子与电气

CiteScore

4.60

自引率

6.20%

发文量

101

审稿时长

>12 weeks

期刊介绍： Prediction through modelling forms the basis of engineering design. The computational power at the fingertips of the professional engineer is increasing enormously and techniques for computer simulation are changing rapidly. Engineers need models which relate to their design area and which are adaptable to new design concepts. They also need efficient and friendly ways of presenting, viewing and transmitting the data associated with their models. The International Journal of Numerical Modelling: Electronic Networks, Devices and Fields provides a communication vehicle for numerical modelling methods and data preparation methods associated with electrical and electronic circuits and fields. It concentrates on numerical modelling rather than abstract numerical mathematics. Contributions on numerical modelling will cover the entire subject of electrical and electronic engineering. They will range from electrical distribution networks to integrated circuits on VLSI design, and from static electric and magnetic fields through microwaves to optical design. They will also include the use of electrical networks as a modelling medium.