0 and bandwidth ω0/Q of the circuit are separately and electronically adjustable. Simulation results are performed with LTspice Simulator using 0.18 μm TSMC CMOS process parameters. Based on this study, simulation and theoretical results are in harmony for the proposed circuits.

">
0 Contact Us

Current Mode Filters Employing Current Differencing Transconductance Amplifiers

Mustafa Konal *, Firat Kacar **, Cengiz Polat Uzunoglu ***
* Department of Electronics and Telecommunication Engineering, Namik Kemal University, Tekirdag, Turkey.
** Department of Electrical and Electronics Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey.
*** Department of Electrical and Electronics Engineering, Istanbul University-Cerrahpasa, Istanbul, Turkey.
Periodicity:July - December'2020
DOI : https://doi.org/10.26634/jcir.8.2.17789

Abstract

In this paper, band-pass/low-pass bi-quad filter realizations are proposed. The designed current-mode filters contain single input and two outputs based on two current differencing transconductance amplifiers (CDTAs) and only two grounded capacitors without any resistors can synchronically operate. The low-pass (LP) and the band-pass (BP) filter responses of the proposed realization are investigated. The pole angular frequency ω0 and bandwidth ω0/Q of the circuit are separately and electronically adjustable. Simulation results are performed with LTspice Simulator using 0.18 μm TSMC CMOS process parameters. Based on this study, simulation and theoretical results are in harmony for the proposed circuits.

Keywords

 CDTA, Analog Integrated Circuits, Bi-Quad Filter, Angular Frequency.

How to Cite this Article?

 Konal, M., Kacar, F., and Uzunoglu, C. P. (2020). Current Mode Filters Employing Current Differencing Transconductance Amplifiers. i-manager's Journal on Circuits and Systems, 8(2), 10-15. https://doi.org/10.26634/jcir.8.2.17789

References
[1]. Bang, J., Song, J., & Lee, W. (2014). Analyzing of CDTA using a new small signal equivalent circuit and application of LP filters. Journal of the Korea Academia-Industrial Cooperation Society, 15(12), 7287-7291. https://doi.org/ 10.5762/KAIS.2014.15.12.7287
[2]. Bekri, A. T., & Anday, F. (2005, September). N -order lowpass filter employing current differencing transconductance amplifiers. In Proceedings of the 2005 European Conference on Circuit Theory and Design, (Vol. 2, pp. II- 193). IEEE. https://doi.org/10.1109/ECCTD.2005.1523026
[3]. Biolek, D. (2003, September). CDTA-building block for current-mode analog signal processing. In Proceedings of the European Conference on Circuit Theory and Design (ECCTD 2003) (Vol. 3, pp. 397-400).
[4]. Biolek, D., & Biolková, V. (2006, September). Current- mode CDTA-based comparators. In The 13th Electronic Devices and Systems 2006 IMAPS CS/SK International Conference EDS (pp. 6-10).
[5]. Biolek, D., Biolkova, V., & Kolka, Z. (2009). Currentmode biquad employing single CDTA. Indian Journal of Pure and Applied Physics, 47(7), 535-537.
[6]. Biolek, D., Hancioglu, E., & Keskin, A. Ü. (2008). Highperformance current differencing transconductance amplifier and its application in precision current-mode rectification. AEU-International Journal of Electronics and Communications, 62(2), 92-96. https://doi.org/10.1016/j. aeue.2007.03.003
[7]. Biolek, D., Keskin, A. Ü., & Biolkova, V. (2010). Grounded capacitor current mode single resistance-controlled oscillator using single modified current differencing transconductance amplifier. IET Circuits, Devices & Systems, 4(6), 496-502. https://doi.org/10.1049/iet-cds. 2009.0330
[8]. Bumrongchoke, T., Duangmalai, D., & Jaikla, W. (2010, October). Current differencing transconductance amplifier based current-mode quadrature oscillator using grounded capacitors. In 2010, 10th International Symposium on Communications and Information Technologies (pp. 192-195). IEEE. https://doi.org/10.1109/ ISCIT.2010.5664834
[9]. Chien, H. C. (2017). Current-mode square wave generators based on a single CDTA. International Journal of Electronics, 104(9), 1589-1605. https://doi.org/10.1080/ 00207217.2017.1312714
[10]. Jaikla, W., Siripruchyanun, M., Bajer, J., & Biolek, D. (2008). A simple current-mode quadrature oscillator using single CDTA. Radioengineering, 17(4), 33-40.
[11]. Jin, J., & Wang, C. (2012). Single CDTA-based currentmode quadrature oscillator. AEU-International Journal of Electronics and Communications, 66(11), 933-936. https:// doi.org/10.1016/j.aeue.2012.03.018
[12]. Jin, J., & Wang, C. (2014). CDTA-based electronically tunable current-mode quadrature oscillator. International Journal of Electronics, 101(8), 1086-1095. https://doi.org/ 10.1080/00207217.2013.805394
[13]. Kacar, F., & BAŞAK, M. E. (2014). A new mixed mode full-wave rectifier realization with current differencing transconductance amplifier. Journal of Circuits, Systems, and Computers, 23(07), 1-5. https://doi.org/10.1142/S02 18126614501011
[14]. Kacar, F., & Kuntman, H. (2009, May). A new CMOS current differencing transconductance amplifier (CDTA) and its biquad filter application. In IEEE EUROCON 2009 (pp. 189-196). IEEE. https://doi.org/10.1109/EURCON. 2009.5167629
[15]. Kaçar, F., & Kuntman, H. (2010, December). Design of quadrature oscillator using Current Differencing (CDTA) Transconductance Amplifier. In National Conference on Electrical, Electronics and Computer Engineering (pp. 399-403). IEEE.
[16]. Kacar, F., & Kuntman, H. H. (2011). A new, improved CMOS realization of CDTA and its filter applications. Turkish Journal of Electrical Engineering & Computer Sciences, 19(4), 631-642. https://doi.org/10.3906/elk-1003-467
[17]. Keskin, A. Ü., & Biolek, D. (2006). Current mode quadrature oscillator using current differencing transconductance amplifiers (CDTA). IEE Proceedings - Circuits, Devices and Systems, 153(3), 214-218. https://doi.org/10.1049/ip-cds:2 0050304
[18]. Khateb, F., VÁVRA, J., & Biolek, D. (2010). A novel current-mode full-wave rectifier based on one CDTA and two diodes. Radioengineering, 19(3), 437-445.
[19]. Koton, J., Herencsar, N., Vrba, K., & Minaei, S. (2011, May). Precision full-wave current-mode rectifier using current differencing transconductance amplifier. In 2011, IEEE 3rd International Conference on Communication Software and Networks (pp. 460-463). IEEE. https://doi.org/ 10.1109/ICCSN.2011.6014935
[20]. Kumngern, M., & Dejhan, K. (2009, January). Electronically tunable current-mode quadrature oscillator using current differencing transconductance amplifiers. In TENCON 2009-2009 IEEE Region 10 Conference (pp. 1-4). IEEE. https://doi.org/10.1109/TENCON.2009.5396218
[21]. Kumngern, M., Lamun, P., & Dejhan, K. (2012). Current‐mode quadrature oscillator using current differencing transconductance amplifiers. International Journal of Electronics, 99(7), 971-986. https://doi.org/10. 1080/00207217.2011.651693
[22]. Lahiri, A. (2009a). New current-mode quadrature oscillators using CDTA. IEICE Electronics Express, 6(3), 135- 140. https://doi.org/10.1587/elex.6.135
[23]. Lahiri, A. (2009b). Novel voltage/current-mode quadrature oscillator using current differencing transconductance amplifier. Analog Integrated Circuits and Signal Processing, 61(2), 199-203. https://doi.org/10. 1007/s10470-009-9291-0
[24]. Pandey, N., & Pandey, R. (2013). Current mode fullwave rectifier based on a single MZC-CDTA. Active and Passive Electronic Components, 1-5. https://doi.org/10.11 55/2013/967057
[25]. Pandey, N., & Paul, S. K. (2011). Single CDTA-based current mode all-pass filter and its applications. Journal of Electrical and Computer Engineering, 2011, 1-5. https:// doi.org/10.1155/2011/897631
[26]. Prasad, D., Bhaskar, D. R., & Singh, A. K. (2008). Realisation of single-resistance-controlled sinusoidal oscillator: A new application of the CDTA. WSEAS Transactions on Electronics, 5(6), 257-259.
[27]. Prasad, D., Bhaskar, D. R., & Singh, A. K. (2009a). Multifunction biquad using single current differencing transconductance amplifier. Analog Integrated Circuits and Signal Processing, 61(3), 309-313. https://doi.org/10. 1007/s10470-009-9310-1
[28]. Prasad, D., Bhaskar, D. R., & Singh, A. K. (2009b). Universal current-mode biquad filter using dual output current differencing transconductance amplifier. AEUInternational Journal of Electronics and Communications, 63(6), 497-501. https://doi.org/10.1016/j.aeue.2008.02.012
[29]. Prasad, D., Bhaskar, D. R., & Singh, A. K. (2010). New grounded and floating simulated inductance circuits using current differencing transconductance amplifiers. Radioengineering, 19(1), 194-198.
[30]. Sedra, A. S., & Smith, K. C. (2003). Microelectronic circuits (5th Ed.). New York: Oxford University Press.
[31]. Shah, N. A., Quadri, M., & Iqbal, S. Z. (2008a). CDTA based transimpedance type first-order all-pass filter. WSEAS Transactions on Electronics, 5(6), 280-284.
[32]. Shah, N. A., Quadri, M., & Iqbal, S. Z. (2008b). High output impedance current-mode allpass inverse filter using CDTA. Indian Journal of Pure and Applied Physics, 46, 893- 896.
[33]. Soni, G. S., & Ansari, M. S. (2014, July). Current-mode electronically-tunable Schmitt Trigger using single 65nm±0.75 V CMOS CDTA. In 2014, International Conference on Signal Propagation and Computer Technology (ICSPCT 2014) (pp. 137-141). IEEE. https://doi. org/10.1109/ICSPCT.2014.6884939
[34]. Tangsrirat, W. (2007). Current differencing transconductance amplifier-based current-mode four-phase quadrature oscillator. Indian Journal of Enginnering and Materials Sciences, 14(4), 289-294.
[35]. Tangsrirat, W., & Tanjaroen, W. (2008). Current-mode multiphase sinusoidal oscillator using current differencing transconductance amplifiers. Circuits, Systems & Signal Processing, 27(1), 81-93. https://doi.org/10.1007/s00034-0 07-9010-y
[36]. Tangsrirat, W., Pukkalanun, T., & Surakampontorn, W. (2010). Resistorless realization of current-mode first-order allpass filter using current differencing transconductance amplifiers. Microelectronics Journal, 41(2-3), 178-183. https://doi.org/10.1016/j.mejo.2010.02.001
[37]. Tanjaroen, W., & Tangsrirat, W. (2008, May). Resistorless current-mode first-order allpass filter using CDTAs. In 2008, 5th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (Vol. 2, pp. 721-724). IEEE. https://doi.org/10.1109/ECTICON.2008.4600532
[38]. Uygur, A., & Kuntman, H. (2006a). Low-voltage current differencing transconductance amplifier in a novel allpass configuration. In MELECON 2006-2006 IEEE Mediterranean Electrotechnical Conference (pp. 23-26). IEEE. https://doi. org/10.1109/MELCON.2006.1653026
[39]. Uygur, A., & Kuntman, H. (2006b). CDTA-based quadrature oscillator design. In 2006, 14th European Signal Processing Conference (pp. 1-4). IEEE.
[40]. Yildirim, M., Ugranli, H. G., & Kaçar, F. (2016). Low voltage low power DTMOS-CDTA filter design using for biomedical signal processing applications. International Journal of Computational and Experimental Science and Engineering, 2(2), 6-9.
If you have access to this article please login to view the article or kindly login to purchase the article

Purchase Instant Access

Single Article

North Americas,UK,
Middle East,Europe 		India Rest of world
USD EUR INR USD-ROW
Online 15 15
ADD TO CART

Options for accessing this content:
  • If you would like institutional access to this content, please recommend the title to your librarian.
    Library Recommendation Form
  • If you already have i-manager's user account: Login above and proceed to purchase the article.
  • New Users: Please register, then proceed to purchase the article.
Submit New Paper Track Paper Status Buy Journal Track Your Subscription Journal Archive
Authors Institutions/Librarians Agents Conferences
About Us Contact FAQ Terms and Conditions Privacy Policy Refund & cancellation Policy