A Digitally Programmable Voltage-mode Multifunction Biquad Filter with Single-Output

This article proposes a voltage-mode multifunction filter using differential voltage current controllable current conveyor transconductance amplifier (DV-CCCCTA). The features of the circuit are that: the quality factor and pole frequency can be tuned independently via the values of capacitors: the circuit description is very simple, consisting of merely 1 DV-CCCCTA, and 2 capacitors. Without any component matching conditions, the proposed circuit is very appropriate to further develop into an integrated circuit. Additionally, each function response can be selected by suitably selecting input signals with digital method. The PSpice simulation results are depicted. The given results agree well with the theoretical anticipation.

Authors:

• C. Ketviriyakit
• W. Kongnun
• C. Chanapromma
• P. Silapan

Keywords:

• DV-CCCCTA
• Voltage-mode
• Multifunction filter

References:

[1] A. S. Sedra, and K. C. Smith, Microelectronic circuits, 3rd ed.,
Florida: Holt, Rinehart and Winston, 1991.
[2] M. A. Ibrahim, S. Minaei, and H. A. Kuntman, "A 22.5 MHz
currentmode KHN-biquad using differential voltage current conveyor
and grounded passive elements," Int. J. Electron. Commun. (AEU),
vol. 59, pp. 311-318, 2005.
[3] C. Chang and M.S. Lee, "Universal voltage-mode filter with three
inputs and one output using three current conveyors and one voltage
follower," Electron. Lett, vol. 30, pp. 2112-2113, 1994.
[4] C.M. Chang, "Multifunction biquadratic filters using current
conveyors," IEEE Trans. Circuits Syst. II, vol. 44, pp. 956-958, 1997.
[5] C.M. Chang and S.H. Tu, "Universal voltage-mode filter with four.
inputs and one output using two CCII+s," Int. J. Electron., vol. 86,
pp. 305-309, 1999.
[6] J.W. Horng, C.C. Tsai, and M.H. Lee, "Novel universal voltage-mode
biquad filter with three inputs and one output using only two current
conveyors," Int. J. Electron., vol. 80, pp. 543-546, 1996.
[7] J.W. Horng, J.R. Lay, C.W. Chang and M.H. Lee, "High input
impedance voltage-mode multifunction filters using plus-type CClls,"
Electron. Lett, vol. 33, pp. 472-473, 1997.
[8] J.W. Horng, "High-input impedance voltage-mode universal
biquadratic filter using three plus-type CCIIs," IEEE Trans. Circuits
Syst. II, vol. 48, pp. 996-997, 2001.
[9] J.W. Horng, "High-input impedance voltage-mode universal
biquadratic filter using three plus-type CCIIs," Int. J. Electron., vol. 8,
pp. 465-475, 2004.
[10] M.A. Ibrahim, S. Minaei, and H.A. Kuntman "A 22.5 MHz
currentmode KHN-biquad using differential voltage current conveyor
and grounded passive elements," Int. J. Electron Coms (AEU), vol.
59, pp. 311-318, 2005.
[11] S.I. Liu and J.L. Lee, "Voltage-mode universal filters using two
current conveyors," Int. J. Electron., vol. 82, pp. 145-150, 1997.
[12] B. Metin, E. Yuce and O. Cicekoglu, "A Novel dual output universal
filter topology using a single current conveyor," Electrical
Engineering, vol. 89, pp. 563-567, 2007.
[13] C. Chanapromma, W. Jaikla and M. Siripruchyanun, "A Digitally
Programmable Voltage-Mode Multi-function Filter Using
CCDVCCs," The 2009 International Symposium on Communications
and Information Technologies (ISCIT 2009), Incheon, Korea, pp.
897-900, 2009.
[14] A. Jantakun and M. Siripruchyanun, "Single Element Based
Electronically Controllable Floating Positive and Negative Inductance
Simulators and Its Applications," The 3rd Joint International
Information & Communication Technology, Electronic and Electrical
Engineering (JICTEE 2010), Luangeprabang, Lao PDR, pp. 321-325,
2010
[15] D.R. Frey "Log-domain filtering: an approach to current-mode
filtering," IEE Proc. Circuit Devices Syst., vol. 140, pp. 406-416,
1993.
[16] Y. Maruyama, A. Hyogo, and K. Sekine, "A digitally programmable
CMOS biquad filter using current-mode integrators," IEICE trans. on
fundamentals, vol. E85-A, no. 2, pp. 316-323, 2002.