Realization of a general all-pole current transfer function by using CBTA

In this article, a general all-pole current transfer function synthesis procedure using current backward transconductance amplifiers (CBTAs) is proposed. The proposed configuration uses n current backward transconductance amplifiers and n grounded capacitors as the only type of passive elements. The circuit is eligible to realize any all-pole transfer characteristics with a given strictly Hurwitz (stable) denominator polynomial. Further, it is straightforward to find the values of the passive elements from the coefficients of this polynomial by using the Routh–Hurwitz algorithm as in the realization of a two-element kind passive network synthesis. In this sense and as far as the author's knowledge, it is the only active structure that can be synthesized like a passive two-element kind Cauer circuit. The simulations that are performed using PSPICE exhibit satisfactory results coherent with the theory. Copyright © 2011 John Wiley & Sons, Ltd.

[1]  Raj Senani,et al.  Multifunction CM/VM Biquads Realized with a Single CFOA and Grounded Capacitors , 2003 .

[2]  Muhammet Köksal,et al.  Floating Immittance Function Simulator and Its Applications , 2009, Circuits Syst. Signal Process..

[3]  Worapong Tangsrirat,et al.  Low-voltage NMOS-based current differencing buffered amplifier and its application to current-mode ladder filter design , 2006 .

[4]  D. R. Frey,et al.  Log-domain filtering: An approach to current-mode fil-tering , 1993 .

[5]  D. C. Wadsworth.  Accurate current conveyor integrated circuit , 1989 .

[6]  Uday Pandit Khot,et al.  CFA-based grounded-capacitor operational simulation of ladder filters , 2008 .

[7]  M. Sagbas,et al.  Voltage-mode three-input single-output multifunction filters employing minimum number of components , 2007 .

[8]  Umut Engin Ayten,et al.  Current mode leapfrog ladder filters using a new active block , 2010 .

[9]  Ece Olcay Gunes,et al.  An nth-order allpass voltage transfer function synthesis using commercially available active components , 1999 .

[10]  A. Fabre,et al.  High frequency applications based on a new current controlled conveyor , 1996 .

[11]  B. Wilson,et al.  Recent developments in current conveyors and current-mode circuits , 1990 .

[12]  Cevdet Acar,et al.  nth-order current transfer function synthesis using current differencing buffered amplifier: signal-flow graph approach , 2000 .

[13]  Montree Siripruchyanun,et al.  Current-mode biquadratic filter using DO-CCCDBAs , 2010 .

[14]  Erik Bruun.  Constant-bandwidth current mode operational amplifier , 1991 .

[15]  Alessandro Trifiletti,et al.  A novel low-voltage low-power fully differential voltage and current gained CCII for floating impedance simulations , 2009, Microelectron. J..

[16]  Muhammet Koksal,et al.  A versatile signal flow graph realization of a general current transfer function , 2008 .

[17]  Chun-Ming Chang,et al.  Universal active filter with current gain using OTAs , 1991 .

[18]  Shahram Minaei,et al.  Input mapping algorithm for parallel transistor structures , 2009 .

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

[20]  Ahmed M. Soliman,et al.  A time-delay technique to improve GBW on negative feedback amplifiers , 2008 .

[21]  M. Sagbas,et al.  General synthesis procedure for nth-order current transfer function using CDBA , 2007 .

[22]  Umut Engin Ayten,et al.  Current and voltage transfer function filters using a single active device , 2010, IET Circuits Devices Syst..

[23]  Ahmed M. Soliman.  Generation and classification of Kerwin–Huelsman–Newcomb circuits using the DVCC , 2009 .