Journal article Open Access

First Order Filter Based Current-Mode Sinusoidal Oscillators Using Current Differencing Transconductance Amplifiers (CDTAs)

S. Summart; C. Saetiaw; T. Thosdeekoraphat; C. Thongsopa

This article presents new current-mode oscillator circuits using CDTAs which is designed from block diagram. The proposed circuits consist of two CDTAs and two grounded capacitors. The condition of oscillation and the frequency of oscillation can be adjusted by electronic method. The circuits have high output impedance and use only grounded capacitors without any external resistor which is very appropriate to future development into an integrated circuit. The results of PSPICE simulation program are corresponding to the theoretical analysis.

Files (385.4 kB)
Name Size
385.4 kB Download
  • A. U. Keskin, and D. Biolek, "Current mode quadrature oscillator using current differencing transconductance amplifiers (CDTA)," IEE Proceedings Circuits Devices and Systems, vol. 153, pp. 214-218, 2006. [10] M. Kumngern, and K. Dejhan, "Electronically tunable current-mode quadrature oscillator using current differencing transconductance amplifiers," IEEE Region 10 Conference (TENCON 2009), 2009, pp. 1-4. [11] D. Biolek, A. Keskin, and V. Biolkova, "Grounded capacitor current mode single resistance-controlled oscillator using single modified current differencing transconductance amplifier," Circuits, Devices & Systems, IET, vol. 4, pp. 496-502, 2010. [12] W. Jaikla, and M. Siripruchyanan, "A versatile quadrature oscillator and universal biquad filter using dual-output current controlled current differencing transconductance amplifier," International Symposium on Communications and Information Technologies (ISCIT'06), 2006, pp. 1072-1075. [13] M. T. Abuelma'atti, and H. A. Al-Zaher, "Current-mode sinusoidal oscillators using single FTFN," IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, vol. 46, pp. 69-74, 1999. [14] D. Prasad, and D. Bhaskar, "Electronically controllable explicit current output sinusoidal oscillator employing single VDTA," ISRN Electronics, vol. 2012, pp. 1-5, 2012. [15] W. Jaikla, M. Siripruchyanun, J. Bajer, and D. Biolek, "A simple current-mode quadrature oscillator using single CDTA," Radioengineering, vol. 17, pp. 33-40, 2008. [16] W. Jaikla, and M. Siripruchyanun, "CCCDTAs-based versatile quadrature oscillator and universal biquad filter," The Proceedings of ECTI con 2007, 2007, pp. 1065-1068. [17] S. Maneewan, B. Sreewirote, and W. Jaikla, "A current-mode quadrature oscillator using a minimum number of active and passive components," IEEE International Conference on Vehicular Electronics and Safety (ICVES), 2011, pp. 312-315. [18] T. Bumrongchoke, D. Duangmalai, and W. Jaikla, "Current differencing transconductance amplifier based current-mode quadrature oscillator using grounded capacitors," International Symposium on Communications and Information Technologies (ISCIT), 2010, pp. 192-195. [19] A. Lahiri, "Explicit-current-output quadrature oscillator using second-generation current conveyor transconductance amplifier," Radioengineering, vol. 1, pp. 522-5268, 2009. [20] R. Šotner, Z. Hruboš, B. Ševčík, J. Slezák, J. Petržela, and T. Dostál, "An example of easy synthesis of active filter and oscillator using signal flowgraph modification and controllable current conveyors," Journal of Electrical Engineering, vol. 62, pp. 258-266, 2011. [21] E. Yuce, and S. Minaei, "A modified CFOA and its applications to simulated inductors, capacitance multipliers, and analog filters," IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 55 pp. 266-275, 2008,. [22] M. Bhushan, and R. Newcomb, "Grounding of capacitors in integrated circuits," Electronics Letters, vol. 3, pp. 148-149, 1967. [23] A. M. Soliman, "New grounded capacitor current mode band-pass low-pass filters using two balanced output ICCII," Journal of Active and Passive Electronic Devices, vol. 3, pp. 175-184, 2008. [24] D. Biolek, "CDTA–building block for current-mode analog signal processing," Proceedings of the European conference on circuit theory and design, 2003, pp. 397-400. [25] M. Somdunyakanok, M. Siripruchyanun, and P. Prommee, "CMOS multiple-output CDTA and its applications," Proceedings of the 1st International Conference on Technical Education (ICTE2009), 2009, pp. 184-187. [26] D. Biolek, V. Biolkova, and Z. Kolka, "Single-CDTA (current differencing transconductance amplifier) current-mode biquad revisited," WSEAS Transactions on Electronics, vol. 5, pp. 250-256, 2008. [27] E. Yuce, S. Tokat, A. Kızılkaya, and O. Cicekoglu, "CCII-based PID controllers employing grounded passive components," International Journal of Electronics and Communications (AEU), vol. 60, pp. 399-403, 2006.

  • A. Uygur, and H. Kuntman, "CDTA-based quadrature oscillator design," 14th European Signal Processing Conference (EUSIPCO 2006), 2006, pp. 4-8.

  • C. Sakul, W. Jaikla, and K. Dejhan, "New resistorless current-mode quadrature oscillators using 2 CCCDTAs and grounded capacitors," Radioengineering, vol. 20, pp. 890-897, 2011.

  • C. Toumazou, F.J. lidgey, and D.G. haigh, Analogue IC design: the current-mode approach, Stevenage (UK): Peter Peregrinus, 1990.

  • D. Prasad, D. Bhaskar, and A. Singh, "Realisation of single-resistance-controlled sinusoidal oscillator: a new application of the CDTA," WSEAS Transactions on Electronics, vol. 5, pp. 257-259, 2008.

  • J. JIN, and C. WANG, "Current-mode four-phase quadrature oscillator using current differencing transconductance amplifier based first-order allpass filter," Revue Roumaine Des Sciences Techniques, 2012, pp. 291-300.

  • S. Maheshwari, "Electronically tunable quadrature oscillator using translinear conveyors and grounded capacitors," Active and Passive Elec. Comp., vol. 26, pp. 193-196, 2003.

  • T. Thosdeekoraphat, S. Summart, C. Saetiaw, S. Santalunai, and C. Thongsopa, "CCTAs based current-mode quadrature oscillator with high output impedances," International Journal of Electronics and Electrical Engineering, vol. 1, 2013, pp. 52-56.

  • W.J. Kerwin, L.P. Huelsman, and R.W. Newcomb, "State-variable synthesis for insensitive integrated circuit transfer functions," IEEE Journal of Solid-State Circuits, vol. 2, pp. 87-92, 1967.

All versions This version
Views 1212
Downloads 33
Data volume 1.2 MB1.2 MB
Unique views 1212
Unique downloads 33


Cite as