Current‐mode quadrature oscillator using current differencing transconductance amplifiers

This article presents a new electronically tunable single‐element‐controlled current‐mode quadrature sinusoidal oscillator circuit using current differencing transconductance amplifiers (CDTAs). The proposed oscillator is consisted of two CDTAs, two grounded capacitors and one grounded resistor, which is beneficial to monolithic integrated circuit implementation both in CMOS and bipolar technologies. The condition of oscillation and the frequency of oscillation are independently controllable. The frequency of oscillation can also be electronically controlled by adjusting the bias current of CDTA. The circuit provides four quadrature current outputs and two quadrature voltage outputs. The current output terminals possess high impedance level. PSPICE simulation results are used to verify the performance of the proposed circuit implemented at the transistor level. The measurement results support the computer simulations.

[1]  Jiun-Wei Horng.  Current conveyors based allpass filters and quadrature oscillators employing grounded capacitors and resistors , 2005, Comput. Electr. Eng..

[2]  Wanlop Surakampontorn,et al.  An integrable temperature-insensitive gm –RC quadrature oscillator , 2003 .

[3]  Kobchai Dejhan,et al.  An integrable electronic-controlled quadrature sinusoidal oscillator using CMOS operational transconductance amplifier , 2002 .

[4]  Worapong Tangsrirat,et al.  Resistorless realization of current-mode first-order allpass filter using current differencing transconductance amplifiers , 2010, Microelectron. J..

[5]  Jiun Wei Horng,et al.  Current-Mode Quadrature Oscillator with Grounded Capacitors and Resistors Using Two DVCCs , 2003, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[6]  Montree Kumngern,et al.  Electronically tunable current-mode quadrature oscillator using current differencing transconductance amplifiers , 2009, TENCON 2009 - 2009 IEEE Region 10 Conference.

[7]  Bernabé Linares-Barranco,et al.  On the design of voltage-controlled sinusoidal oscillators using OTAs , 1990 .

[8]  J. K. Fidler,et al.  Analogue IC Design: the Current-Mode Approach , 1991 .

[9]  Worapong Tangsrirat,et al.  Current-Mode Multiphase Sinusoidal Oscillator Using Current Differencing Transconductance Amplifiers , 2008 .

[10]  M. Bhushan,et al.  Grounding of capacitors in integrated circuits , 1967 .

[11]  Dalibor Biolek,et al.  Grounded capacitor current mode single resistance-controlled oscillator using single modified current differencing transconductance amplifier , 2010, IET Circuits Devices Syst..

[12]  J. Horng.  Current Differencing Buffered Amplifiers Based Single Resistance Controlled Quadrature Oscillator Employing Grounded Capacitors , 2002, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[13]  Dalibor Biolek,et al.  Current-mode KHN filter employing current differencing transconductance amplifiers , 2006 .

[14]  Abdhesh K. Singh,et al.  Universal current-mode biquad filter using dual output current differencing transconductance amplifier , 2009 .

[15]  Montree Siripruchyanun,et al.  Realization of electronically tunable voltage-mode/current-mode quadrature sinusoidal oscillator using ZC-CG-CDBA , 2011, Microelectron. J..

[16]  Nigar Minhaj.  Current conveyor-based voltage-mode two-phase and four-phase quadrature oscillators , 2007 .

[17]  Josef BAJER,et al.  A Simple Current-Mode Quadrature Oscillator Using Single CDTA , 2008 .

[18]  Sudhanshu Maheshwari,et al.  Current controlled third order quadrature oscillator , 2005 .

[19]  Shen-Iuan Liu,et al.  Current-mode quadrature sinusoidal oscillator using single FTFN , 1996 .

[20]  Muhammad Taher Abuelma'atti,et al.  Current-mode sinusoidal oscillators using single FTFN , 1999 .

[21]  W. Tangsrirat,et al.  Single-resistance-controlled quadrature oscillator using current differencing buffered amplifiers , 2008 .

[22]  K. Dejhan,et al.  Current-Mode Quadrature Oscillator Using Translinear Current Conveyors , 2008, 2008 International Symposium on Communications and Information Technologies.

[23]  Wen-Yaw Chung,et al.  Quadrature oscillators using CCIIs , 2005 .

[24]  Shen-Iuan Liu,et al.  Current-mode oscillators using single current follower , 1991 .

[25]  Yongan Li,et al.  A new single MCCCDTA based Wien-bridge oscillator with AGC , 2012 .

[26]  Iqbal A. Khan,et al.  On transconductance-C quadrature oscillators , 1997 .

[27]  Jiun-Wei Horng,et al.  Quadrature Oscillators with Grounded Capacitors and Resistors Using FDCCIIs , 2006 .

[28]  Abhirup Lahiri,et al.  Novel voltage/current-mode quadrature oscillator using current differencing transconductance amplifier , 2009 .

[29]  Nisar A. Shah,et al.  CDTA based universal transadmittance filter , 2007 .

[30]  Dalibor Biolek,et al.  First-order voltage-mode all-pass filter employing one active element and one grounded capacitor , 2010 .

[31]  Jerry D. Gibson,et al.  The Communications Handbook , 2002 .

[32]  Dalibor Biolek,et al.  Current mode quadrature oscillator using current differencing transconductance amplifiers (CDTA) , 2006 .

[33]  K. Dejhan,et al.  DDCC-Based Quadrature Oscillator with Grounded Capacitors and Resistors , 2009 .

[34]  Montree Kumngern,et al.  OTAs-based current-mode quadrature oscillator , 2009, 2008 International Symposium on Intelligent Signal Processing and Communications Systems.

[35]  Dalibor Biolek,et al.  Low-distortion current-mode quadrature oscillator for low-voltage low-power applications with non-linear non-inertial automatic gain control , 2011, 2011 20th European Conference on Circuit Theory and Design (ECCTD).

[36]  I. A. Khan,et al.  An integrable gm-C quadrature oscillator , 2000 .

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

[38]  D. Biolek,et al.  A Simple Current-mode Quadrature Oscillator Using only Single CDTA , 2008 .

[39]  M. T. Abuelma’atti.  Grounded capacitor current-mode oscillator using single currentfollower , 1992 .