Electronically tunable CFTA based positive and negative grounded capacitance multipliers

Abstract This paper presents four novel lossless grounded capacitance multiplier (GCM) circuits based on Current Follower Transconductance Amplifier (CFTA). Two of the proposed GCMs are positive and two are negative. The proposed GCMs include two CFTAs, two resistors, and a capacitor. The proposed GCMs employ a minimum number of passive components and do not require any passive element matching condition. The multiplication factor can be controlled either by bias current or by varying either of the two resistances. The effects of parasitic elements on the operating frequency range of the proposed GCMs have been investigated through mathematical analysis. Time and frequency domain analysis has been performed with LTspice program using 0.13 µm IBM CMOS technology parameters. The capacitance cancellation circuit and current-mode universal biquad filter applications are provided to demonstrate the usefulness of the circuit. Monte Carlo and temperature analyses have been performed to verify the robustness of the proposed GCMs. Additionally, comparison of the proposed GCMs with the relevant circuits previously reported in the literature is presented. An experimental example is provided to verify the time-domain performance of the proposed positive lossless GCM by using commercially available integrated circuits (ICs).

[1]  Erkan Yuce,et al.  Supplementary single active device based grounded immittance function simulators , 2018, AEU - International Journal of Electronics and Communications.

[2]  Dalibor Biolek,et al.  CDTA-Based Capacitance Multipliers , 2018, Circuits Syst. Signal Process..

[3]  Wanlop Surakampontorn,et al.  CMOS-based integrable electronically tunable floating general impedance inverter , 1997 .

[4]  Muhammad Taher Abuelma'atti,et al.  Electronically tunable capacitance multiplier and frequency-dependent negative-resistance simulator using the current-controlled current conveyor , 1999 .

[5]  Indrit Myderrizi,et al.  Electronically tunable DXCCII-based grounded capacitance multiplier , 2014 .

[6]  Ahmed M. Soliman,et al.  New high accuracy CMOS current conveyors , 2005 .

[7]  Muhammed Emin Başak,et al.  Realizations of lossy and lossless capacitance multiplier using CFOAs , 2020 .

[8]  Erkan Yuce,et al.  On the realization of the floating simulators using only grounded passive components , 2006 .

[9]  Zainulabideen Jamal Khalifa,et al.  New two-CFOA-based floating immittance simulators , 2017 .

[10]  Alain Fabre,et al.  Gyrator Implementation from Commercially Available Transimpedance Operational Amplifiers , 1992 .

[11]  Shahram Minaei,et al.  Grounded Capacitance Multipliers based on Active Elements , 2017 .

[12]  Erkan Yuce,et al.  Floating inductance, FDNR and capacitance simulation circuit employing only grounded passive elements , 2006 .

[13]  Maneesha Gupta,et al.  Realizations of Grounded Negative Capacitance Using CFOAs , 2011, Circuits Syst. Signal Process..

[14]  Yongan Li.  A series of new circuits based on CFTAs , 2012 .

[15]  A Lahiri,et al.  DO-CCII Based Generalised Impedance Convertor Simulates Floating Inductance, Capacitance Multiplier and Fdnr , 2010 .

[16]  Shahram Minaei,et al.  Resistorless floating immittance function simulators employing current controlled conveyors and a grounded capacitor , 2006 .

[17]  Rakesh Verma,et al.  Novel CFOA based capacitance multiplier and its application , 2019, AEU - International Journal of Electronics and Communications.

[18]  Anwar A. Khan,et al.  Current conveyor based R- and C- multiplier circuits , 2002 .

[19]  Erkan Yüce,et al.  Bandwidth Expansion Methods of inductance Simulator Circuits and voltage-Mode biquads , 2011, J. Circuits Syst. Comput..

[20]  Norbert Herencsar,et al.  History, Progress and New Results in Synthetic Passive Element Design Employing CFTAs , 2015 .

[21]  M. T. Ahmed,et al.  Novel electronically tunable C-multipliers , 1995 .

[22]  Erkan Yuce,et al.  A novel floating simulation topology composed of only grounded passive components , 2010 .

[23]  Worapong Tangsrirat.  Novel current-mode and voltage-mode universal biquad filters using single CFTA , 2010 .

[24]  Shahram Minaei,et al.  On the Realization of Simulated Inductors with Reduced Parasitic Impedance Effects , 2009, Circuits Syst. Signal Process..

[25]  Muhammad Taher Abuelma’atti,et al.  New grounded immittance function simulators using single current feedback operational amplifier , 2012 .

[26]  Adirek Jantakun,et al.  A simple grounded FDNR and capacitance simulator based-on CCTA , 2015 .

[27]  Benjamin C. Kuo,et al.  AUTOMATIC CONTROL SYSTEMS , 1962, Universum:Technical sciences.

[28]  Muhammad Taher Abuelma'atti,et al.  New CFOA-based floating immittance emulators , 2016 .

[29]  Ahmed M. Soliman,et al.  On the systematic synthesis of CCII‐based floating simulators , 2010, Int. J. Circuit Theory Appl..

[30]  Shahram Minaei,et al.  A Versatile Active Circuit for Realising Floating Inductance, Capacitance, FDNR and Admittance Converter , 2006 .

[31]  Hakan Kuntman,et al.  New active gyrator circuit suitable for frequency-dependent negative resistor implementation , 1999 .

[32]  Erkan Yuce,et al.  A new CFOA based grounded capacitance multiplier , 2020 .

[33]  Halil Alpaslan,et al.  DVCC-based floating capacitance multiplier design , 2017, Turkish J. Electr. Eng. Comput. Sci..

[34]  Norbert Herencsar,et al.  Novel Floating General Element Simulators Using CBTA , 2012 .

[35]  Mohammed Ismail,et al.  Adaptive Miller capacitor multiplier for compact on-chip PLL filter , 2003 .