Fully Uncoupled Electronically Controllable Sinusoidal Oscillator Employing VD-DIBAs

Data Ram Bhaskar, Dinesh Prasad, Kanhaiya Lal Pushkar

Department of Electronics and Communication Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India.
Department of Electronics and Communication Engineering, Maharaja Agrasen Institute of Technology, Rohini, New Delhi, India.

DOI: 10.4236/cs.2013.43035                

Abstract

Recently, voltage differencing-differential input buffered amplifiers (VD-DIBA)-based electronically controllable sinusoidal oscillator has been presented that it does not have the capability of complete independence of frequency of oscillation (FO) and condition of oscillation (CO) as well as electronic control of both CO and FO. In this article, a new fully-uncoupled electronically controllable sinusoidal oscillator using two VD-DIBAs, two grounded capacitors and two resistors has been proposed which offers important advantages such as 1) totally uncoupled and electronically controlled condition of oscillation (CO) and frequency of oscillation (FO); 2) low active and passive sensitivities; and 3) a very good frequency stability factor. The effects of non-idealities of the VD-DIBAs on the proposed oscillator are also investigated. The validity of the proposed formulation has been confirmed by SPICE simulation with TSMC 0.18 μm process parameters.

Keywords

Sinusoidal Oscillator; Voltage-Mode; VD-DIBA

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	W. Tangsrirat and S. Pisitchalermpong, “CDBA-Based Quadrature Sinusoidal Oscillator,” Journal of RF-Engineering and Telecommunication (Germany), Vol. 61, No. 3-4, 2007, pp. 102-104.
[2]	M. T. Abuelmatti, “New Sinusoidal Oscillators with Fully Uncoupled Control of Oscillation Frequency and Condition Using Three CCII + s,” Analog Integrated Circuits and Signal Processing, Vol. 24, No. 3, 2000, pp. 253-261. doi:10.1023/A:1008321911123
[3]	D. R. Bhaskar, S. S. Gupta, R. Senani and A. K. Singh, “New CFOA-Based Sinusoidal Oscillators Retaining Independent Control of Oscillation Frequency Even under the Influence of Parasitic Impedances,” Analog Integrated Circuits and Signal Processing, Vol. 73, 2012, pp. 427437. doi:10.1007/s10470-012-9896-6
[4]	A. M. Soliman, “Current Feedback Operational Amplifier Based Oscillators,” Analog Integrated Circuits and Signal Processing, Vol. 23, No. 3, 2000, pp. 45-55. doi:10.1023/A:1008391606459
[5]	D. R. Bhaskar, “Realization of Second Order Sinusoidal Oscillator/Filters with Non-Interacting Controls Using CFAs,” Journal of RF-Engineering and Telecommunication (Germany), Vol. 57, No. 1-2, 2003, pp. 12-14.
[6]	D. R. Bhaskar and R. Senani, “New Linearly Tunable CMOS-Compatible OTA-C Oscillators with Non-Interacting Controls,” Microelectronics Journal, Vol. 25, No. 2, 1994, pp. 115-123. doi:10.1016/0026-2692(94)90108-2
[7]	D. Prasad, M. Srivastava and D. R. Bhaskar, “Electronically Controllable Fully—Uncoupled Explicit CurrentMode Quadrature Oscillator Using VDTAs and Grounded Capacitors,” Circuits and Systems, Vol. 4, No. 2, 2013, pp. 169-172. doi:10.4236/cs.2013.42023
[8]	D. R. Bhaskar and R. Senani, “New CFOA-Based SingleElement-Controlled Sinusoidal Oscillators,” IEEE Transactions on Instrumentation and Measurement (USA), Vol. 55, No. 6, 2006, pp. 2014-2021. doi:10.1109/TIM.2006.884139
[9]	S. S. Gupta and R. Senani, “Realisation of Current-Mode SRCOs Using All Grounded Passive Elements,” Frequenz, Vol. 57, No. 1-2, 2003, pp. 25-36. doi:10.1515/FREQ.2003.57.1-2.25
[10]	D. Biolek, R. Senani, V. Biolkova and Z. Kolka, “Active Elements for Analog Signal Processing; Classification, Review and New Proposals,” Radioengineering, Vol. 17, No. 4, 2008, pp. 15-32.
[11]	D. Biolek and V. Biolkova, “First-Order Voltage-Mode All-Pass Filter Employing One Active Element and One Grounded Capacitor,” Analog Integrated Circuits and Signal Processing (USA), Vol. 65, No. 1, 2009, pp. 123129. doi:10.1007/s10470-009-9435-2
[12]	D. Prasad, D. R. Bhaskar and K. L. Pushkar, “Realization of New Electronically Controllable Grounded and Floating Simulated Inductance Circuits Using Voltage Differencing Differential Input Buffered Amplifiers,” Active and Passive Electronic Components, 2011, Article ID 101432.
[13]	K. L. Pushkar, D. R. Bhaskar and D. Prasad, “VoltageMode Universal Biquad Filter Employing Single Voltage Differencing Differential Input Buffered Amplifier,” Circuits and Systems, Vol. 4, No. 1, 2013, pp. 44-48. doi:10.4236/cs.2013.41008
[14]	D. Prasad, D. R. Bhaskar and K. L. Pushkar, “Electronically Controllable Sinusoidal Oscillator Employing CMOS VD-DIBAs,” ISRN Electronics, 2013, Article ID 823630.