2021 2019 2017
CMOS fractional-order capacitor/inductor emulator chip (2016)
CMOS fractional-order capacitor emulator chip (2016)
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2021 - S. Kapoulea, C. Psychalinos, A. S. Elwakil, "Power law filters: A new class of fractional-order filters without a fractional-order Laplacian operator," Int. J. Electronics and Communications (AEUE), (10.1016/j.aeue.2020.153537), vol. 129, pp. 153537, 2021.
- M. E. Fouda, A. M. AbdelAty, A. S. Elwakil, A. G. Radwan, A. M. Eltawil, "Programmable constant phase element realization with crossbar arrays," J. Advanced Research, (10.1016/j.jare.2020.08.007) (in press).
- S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Double exponent fractional-order filters: Approximation methods and realization," Circuits Systems & Signal Processing, (doi: 10.1007/s00034-020-01514-7) (in press).
- A. El-Moursy, A. Darya, A. S. Elwakil, A. Jha and S. Majzoub, "Chaotic clock driven cryptographic chip: Towards a DPA resistant AES processor," IEEE Transactions on Emerging Topics in Computing, (doi: 10.1109/TETC.2020.3045802), in press.
- A. S. Elwakil, M. E. Fouda, S. Majzoub and A. G. Radwan, "Pinched hysteresis loops in non‐linear resonators,", IET Circuits, Devices & Systems, vol. 15, no. 2, pp. 88-93, 2021.
- M. Elnawawy et al., "FPGA realizations of chaotic epidemic and disease models including Covid-19," IEEE Access, vol. 9, pp. 21085-21093, 2021.
- M. B. Elamien, B. J. Maundy, L. Belostotski and A. S. Elwakil, "Ultra-low-power compact single-transistor all-pass filter with tunable delay capability," Int. J. Electronics and Communications (AEUE), (10.1016/j.aeue.2021.153645.), in press, 2021.
- A. S. Elwakil, A. Allagui and C. Psychalinos, "On the equivalent impedance of two-impedance self-similar ladder networks," IEEE Transactions on Circuits and Systems II: Express Briefs, (10.1109/TCSII.2021.3057961), in press, 2021.
- Atmospheric pressure air microplasma system for true random bit generation, A Elwakil, A Allagui, S Majzoub, H Alawadhi, US Patent 10,922,056.
2020 A. Allagui, Di. Zhang, I. Khakpour, A. S. Elwakil and C. Wang, "Quantification of memory in fractional-order capacitors," J. Phys. D: Appl. Phys., vol. 53, no. 2, Jan. 2020. A. Allagui, M. Fouda, A. S. Elwakil, "The Ragone plot of supercapacitors under different loading conditions," J. of The Electrochemical Society, vol. 167, no. 2, pp. 020533, 2020. A. Allagui, H. Alnaqbi, A. S. Elwakil, Z. Said, A. A. Hachicha, C. Wang, and M. A. Abdelkareem, "Fractional-order electric double-layer capacitors with tunable low-frequency impedance phase angle and energy storage capabilities," Applied Physics Letters, vol. 116, pp. 013902, 2020. S. Kapoulea, V. Bizonis, P. Bertsias, C. Psychalinos, A. Elwakil and I. Petráš, "Reduced active components count electronically adjustable fractional-order controllers: Two design examples," Electronics, vol. 9, no. 63, pp. 9010063, 2020. M. E. Fouda, A. Allagui, A. S. Elwakil, S. Das, C. Psychalinos and A. G. Radwan, "Nonlinear charge-voltage relationship in constant phase element," Int. J. Electronics and Communications (AEUE), vol. 117, pp. 153104, 2020. B. Maundy, A. S. Elwakil and L. Belostotski, "Single transistor RC-only second-order allpass filters," Int. J. Circuit Theory & Applications, vol. 48, no. 2, pp. 162-169, 2020. B. J. Maundy, A. S. Elwakil and L. Belostotski, "Automatic generation of differential-input differential-output 2nd order filters based on a differential pair," IEEE Trans. Computer-Aided Design, vol. 39, no. 6, pp. 1258-1271, 2020. S. Kapoulea, G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Generalized fully adjustable structure for emulating fractional-order capacitors and inductors of orders less than two," Circuits Systems & Signal Processing, vol. 39, no. 4, pp. 1797-1814, 2020. P. Bertsias, M. Mohsen, L. A. Said, A. S. Elwakil, C. Psychalinos, A. G. Radwan, "Design and implementation of an optimized artificial human eardrum model," Circuits Systems & Signal Processing, vol. 39, pp. 3219–3233, 2020. M. F. Tolba, H. Saleh, B. Mohammad, M. Al-Qutayri, A. S. Elwakil, A. G. Radwan, "Enhanced FPGA realization of the fractional-order derivative and application to a variable-order chaotic system," Nonlinear Dynamics, 99, pp. 3143–3154, 2020. M. F. Tolba, A. S. Elwakil, H. Orabi, M. Elnawawy, F. Aloul, A. Sagahyroon and A. G. Radwan, "FPGA implementation of a chaotic oscillator with odd/even symmetry and its application," Integration: the VLSI Journal, vol. 72, no. 5, 163-170, 2020. A. A. Al-Ali, A. S. Elwakil and B. J. Maundy, "Extraction of bioimpedance phase information from its magnitude using a non-uniform Kramers–Kronig transform," European Biophysics Journal, vol. 49, no. 3, pp. 207–213, 2020. S. Majzoub, A. Allagui and A. S. Elwakil, "Fast spectral impedance measurement method using a structured random excitation," IEEE Sensors Journal, vol. 20, no. 15, pp. 8637 - 8642, Aug. 2020. M. B. Elamien, B. J. Maundy, L. Belostotski and A. S. Elwakil, "Third-order single-transistor all-pass filter," Int. J. Circuit Theory & Applications, vol. 48, no. 7, pp. 1201-1208, 2020. - M. Mohsen, L. A. Said, A. S. Elwakil, A. S. Elwakil; A. H. Madian and A. G. Radwan "Extracting optimized bio-impedance model parameters using different topologies of oscillators," IEEE Sensors Journal, vol. 20, no. 17, pp. 9947-9954, Sept. 2020.
- A. Al-Ali, A. S. Elwakil, B. Maundy and D. Westwick, "A generic impedance modeling technique," Int. J. Electronics Communications (AEUE), vol. 23, pp. 153301, Aug. 2020.
- E. Kaskouta, S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Implementation of a fractional-order electronically reconfigurable lung impedance emulator of the human respiratory tree," J. Low Power Electron. Appl., vol. 10, no. 2, pp. 18, May 2020.
- D. Zhang, A. Allagui, A. S. Elwakil, Z. Yan and H. Lu, "Active circuit model of low-frequency behavior in perovskite solar cells," Organic Electronics, vol. 85, pp. 105804, Oct. 2020.
- M. B. Elamien, B. J. Maundy, L. Belostotski and A. S. Elwakil, "On chip 0.5V 2GHz four-output quadrature-phase oscillator," Int. J. Electronics and Communications (AEUE), vol. 126, pp. 153393, 2020.
- S. Kapoulea, G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Employment of the Padé approximation for implementing fractional-order lead/lag compensators," Int. J. Electronics and Communications (AEUE), vol. 120, pp. 153203, 2020.
- S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Realization of Cole–Davidson function-based impedance models: Application on plant tissues," Fractal Fract, vol. 54, no. 4, (doi:10.3390/fractalfract4040054), 2020.
M. Elamien, B. J. Maundy, L. Belostotski and A. S. Elwakil, "Synthesis of wideband high-quality factor delay-tunable fully differential all-pass filters," IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 10, pp. 4348-4360, Oct. 2020. A. Allagui, S. Majzoub, A. Roja, A. S. Elwakil and H. Alawadhi "Parallel random bits from a single source of entropy based on non thermal electrochemical microplasma," Plasma Processes and Polymers, vol. 17, no. 12, pp. 2000123, 10.1002/ppap.202000123, 2020.
2019 C. Vastarouchas, C. Psychalinos, A. Al-Ali and A. S. Elwakil, "Novel two-measurements-only Cole-Cole bio-impedance parameters extraction technique," Measurement, vol. 131, no. 1, pp. 394-399, Jan. 2019. D. A. Yousri, A. M. AbdelAty, L. A. Said, A. S. Elwakil, B. J. Maundy and A. G. Radwan, "Chaotic flower pollination and grey Wolf algorithms for parameter extraction of bio-impedance models," Applied Soft Computing, Elsevier, vol. 75, pp. 750-77, 2019. P. Bertsias, C. Psychalinos, A. S. Elwakil, L. Safari and S. Minaei, "Design and application examples of CMOS fractional-order differentiators and integrators," Microelectronics J., vol. 83, pp. 155-167, 2019. B. J. Maundy, A. S. Elwakil and D. Zito, "A voltage tunable CMOS differential active resistor and its application," Int. J. Circuit Theory & Applications, vol. 47, no. 1, pp. 175–185, 2019. Z. Said, A. Allagui, M. A. Abdelkareem, A. S. Elwakil, H. Alawadhi, R. Zannerni, K. Elsaid, "Modulating the energy storage of supercapacitors by mixing close-to-ideal and far-from-ideal capacitive carbon nanofibers," Electrochimica Acta, vol. 301, pp. 465-471, April, 2019. T. Bonny, S. Majzoub and A. S. Elwakil, "Hardware optimized FPGA implementations of high speed true random bit generators based on switching-type chaotic oscillators," Circuits Systems and Signal Processing, vol. 38, no. 3, pp. 1342–1359, 2019. A. A. Al-Ali, B. J. Maundy and A. S. Elwakil, Design and Implementation of Portable Impedance Analyzers, Springer, ISBN 978-3-030-11783-2, (10.1007/978-3-030-11784-9), 2019. S. Kapoulea, C. Psychalinos and A. S. Elwakil, "One-terminal electronically-controlled fractional-order capacitor and inductor emulator," Int. J. Electronics and Communications (AEUE), vol. 103, pp. 32-45, May 2019. T. J. Freeborn and A. S. Elwakil, "Rates and effects of local minima on fractional-order circuit model parameters extracted from supercapacitor discharging using least squares optimization," Circuits Systems and Signal Processing, vol. 38, pp. 1907-1922, May 2019. D. A. Yousri, A. M. AbdelAty, L. A. Said, A. S. Elwakil, B. Maundy and A. G. Radwan, "Parameter identification of fractional-order chaotic systems using different meta-heuristic optimization algorithms," Nonlinear Dynamics, vol. 95, no. 3, pp. 2491–2542, 2019. P. Bertsias, C. Psychalinos and A. S. Elwakil, "Partial fraction expansion based realizations of fractional-order differentiators and integrators using active filters," Int. J. Circuit Theory & Applications, vol. 47, no. 4, pp. 513-531, April 2019. B. J. Maundy, A. S. Elwakil and S. Gift, "Enhancing the improved Howland circuit," Int. J. Circuit Theory & Applications, vol. 47, no. 4, pp. 42-47, April 2019. D. Zhang, A. Allagui, A. S. Elwakil, A. M. Nassef, H. Rezk, J. Cheng, W. C. Choy, "On the modeling of dispersive transient photocurrent response of organic solar cells," Organic Electronics, vol. 70, no. 7, pp. 42-47, July 2019. D. Yousri, A. M. AbdelAty, A. G. Radwan, A.S. Elwakil and C. Psychalinos, "Comprehensive comparison based on meta-heuristic algorithms for approximation of the fractional-order Laplacian s^α as a weighted sum of first-order high-pass filters," Microelectronics J., vol. 87, pp. 110-120, May 2019. P. Bertsias, C. Psychalinos, A. S. Elwakil and A. G. Radwan, "Low-voltage and low-power fractional-order parallel tunable resonator," Microelectronics J., vol. 88, pp. 108-116, May 2019. P. Bertsias, C. Psychalinos, A. S. Elwakil and K. Biswas, "Single transistor fractional-order filter using a multi-walled carbon nanotube device," Analog Integrated Circuits and Signal Processing, vol. 100, pp. 215-219, 2019. C. Psychalinos, A. S. Elwakil, B. J. Maundy and A. G. Radwan (Guest Editors), "Editorial note Special Issue on the design and implementation of fractional-order circuits and systems in real-world applications," Microelectronics J., vol. 90, pp. 154-155, 2019. M. Fouda, A. S. Elwakil, A. Allagui, H. Rezk, A. Nassef, "Convolution-based estimation of supercapacitor parameters under periodic voltage excitations," J. of The Electrochemical Society, vol. 166, no. 10, pp. 2267-2269, 2019. B. J. Maundy, A. S. Elwakil and C. Psychalinos, "Correlation between the theory of Lissajous figures and the generation of pinched hysteresis loops in nonlinear circuits," IEEE Trans. Circuits & Syst.-I: Regular papers, vol. 66, no. 7, pp. 2606-2614, July, 2019. M. A. Abdelkareem, A. Allagui, Z. Said, A. S. Elwakil, R. Zannerni, W. H. Tanveer and K. Elsaid, "Frequency-dependent effective capacitance of supercapacitors using electrospun Cobalt-Carbon composite nanofibers," J. of The Electrochemical Society, vol. 166, no. 12, pp. 2403-2408, 2019. K. Baxevanaki, S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Electronically tunable fractional-order highpass filter for phantom electroencephalographic system model implementation," Int. J. Electronics and Communications (AEUE), vol. 110, pp. 152850, 2019. M. E. Fouda, A. Allagui, A. S. Elwakil, A. Eltawil, and F. Kurdahi, "Supercapacitor discharge under constant resistance, constant current and constant power loads," J. Power Sources, vol. 435, pp. 226829, 2019. W. Sayed, A. G. Radwan, M. Elnawawy, H. Orabi, A. Sagahyroon, F. Aloul, A. S. Elwakil, H. Fahmy and A. Elsedeek, "Two-dimensional rotation of chaotic attractors: Demonstrative examples and FPGA realization," Circuits Systems and Signal Processing, vol. 38, pp. 4890–4903, Oct. 2019. S. Majzoub, A. S. Elwakil, C. Psychalinos and B. J. Maundy, "On the mechanism of creating pinched hysteresis loops using a commercial memristor device," Int. J. Electronics and Communications (AEUE), vol. 111, pp. 152923, 2019. B. M. Aboalnaga, A. H. Madian, A. S. Elwakil and A. G. Radwan, "Cole bio-impedance model variations in Daucus Carota Sativus under heating and freezing conditions," IEEE Access, vol. 7, pp. 113254-113263, 2019. M. Fouda, A. Allagui and A. S. Elwakil, "Commercial supercapacitor parameter estimation from step voltage excitation," Int. J. Circuit Theory & Applications, vol. 47, no. 10, pp. 1705-1712, 2019. B. J. Maundy and A. S. Elwakil, "Third-order tunable-phase asymmetric cross-coupled oscillator," IET Circuits Devices & Systems, vol. 13, no. 7, 929 –933, 2019. S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Realizations of simple fractional-order capacitor emulators with electronically-tunable capacitance," Integration: the VLSI Journal, vol. 69, pp. 225–233, 2019. P. Bertsias, C. Psychalinos, A. S. Elwakil and B. Maundy, "Minimum MOS transistor count fractional-order voltage-mode and current-mode filters," Technologies, 7, 85; doi:10.3390/technologies7040085, 2019.
2018
- A. Abdelaty, A. G. Radwan, A. S. Elwakil and C. Psychalinos, "Transient and steady state response of a fractional-order dynamic PV model under different loads," J. Circuits Systems and Computers, vol. 27, no. 2, pp. 1850023, 2018.
- A. Allagui, D. Zhang and A. S. Elwakil, "Short-term memory in electric double-layer capacitors," Applied Physics Letters, vol. 113, pp. 253901, Dec. 2018 (Doi:10.1063/1.5080404).
- S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Single active element implementation of fractional-order differentiators and integrators," Int. J. Electronics and Communications (AEUE), vol. 97, no. 12. pp. 6-15, 2018.
- G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Electronically tunable fully integrated fractional-order resonator," IEEE Trans. Circuits & Syst.-II, vol. 65, no. 2, pp. 166-170, 2018.
- A. S. Elwakil, B. J. Maundy, M. ElAmien and L. Belostotski, "A four-quadrant current multiplier/divider cell with four transistors," Analog Integrated Circuits and Signal Processing, vol. 95, no. 1, pp. 173-179, April, 2018.
- M. B. ElAmein, A. S. Elwakil and B. J. Maundy, "Wide range grounded nonlinear transconductor and its application as a frequency doubler," Int. J. Electronics Letters, vol. 6, no. 2, pp. 214-219, 2018.
- P. Bertsias, C. Psychalinos, A. S. Elwakil and A. G. Radwan, "High-frequency capacitorless fractional-order CPE and FI emulator," Circuits Systems and Signal Processing, vol. 37, no. 7, pp. 2694-2713, 2018.
- B. J. Maundy, A. S. Elwakil and C. Psychalinos, "Simple MOS-based circuit designed to show pinched hysteresis behavior," Int. J. Circuit Theory & Applications, Wiley, vol. 46, no. 5, pp. 1123-1128, 2018.
- A. Al-Ali, A. S. Elwakil, B. J. Maundy and T. J. Freeborn, "Extraction of phase information from magnitude-only bioimpedance measurements using a modified Kramers-Kronig transform," Circuits Systems and Signal Processing, vol. 37, no. 8, pp. 3635-3650, August, 2018.
A. Abdelaty, A. S. Elwakil, A. G. Radwan, B. Maundy and C. Psychalinos, "Approximation of the fractional-order Laplacian as a weighted sum of first-order high-pass filters," IEEE Trans. Circuits & Syst.-II, vol. 65, no. 8, pp. 1114-1118, Aug. 2018. T. Bonny and A. S. Elwakil, "FPGA realizations of high speed switching-type chaotic oscillators using compact VHDL codes," Nonlinear Dynamics, vol. 93, no. 2, pp. 819-833, July, 2018. A. Allagui, A. S. Elwakil, M. Fouda and A. G. Radwan, "Capacitive behavior and stored energy in supercapacitors at power line frequencies," J. Power Sources, vol. 390, pp. 142-147, June 2018. A. Roja, A. Allagui, A. S. Elwakil and H. Alawadhi, "True random bit generators based on current time series of contact glow discharge electrolysis," J. Applied Physics, vol. 123, no. 20, pp. 203301, 2018. C. Vastarouchas, I. Dimeas, C. Psychalinos and A. S. Elwakil, "Fractional-order integrated circuits in control applications and biological modeling," Chapter 6 in Fractional Order Systems (Eds. A. Azar, A. Radwan and S. Vaidyanathan), Elsevier, pp. 163-204, (doi.org/10.1016/B978-0-12-816152-4.00006-6), 2018 S. Kapoulea, C. Psychalinos and A. S. Elwakil, "Minimization of spread of time-constants and scaling factors in fractional-order differentiator and integrator realizations," Circuits Systems and Signal Processing, Springer, vol. 37, 5647–5663, 2018 (awarded the 2018 Armen H. Zemanian Best Paper Award in the area of Circuits and Systems). A. Allagui, T. J Freeborn, A. S. Elwakil, M. E. Fouda, B. J. Maundy, A. G. Radwan, Z. Said, and M. A. Abdelkareem, "Review of fractional-order electrical characterization of supercapacitors, J. Power Sources, vol. 400, no. 8, pp. 457-467, 2018. M. I. Hussain, A. El-Keblawy and A. S. Elwakil, "Aluminum influence on Calotropis procera seedling growth, nutrient accumulation and electrochemical attributes," Flora - Morphology Distribution Functional Ecology of Plants, vol. 248, pp. 34-42, 2018. A. Allagui, A. S. Elwakil, Z. Said, M. Abdelkareem and D. Zhang, "Band-pass filter and relaxation oscillator using electric double-layer capacitor," ChemElectroChem, Wiley, vol. 5, no. 23, pp. 3793-3798, Dec. 2018. United States Provisional Patent Application, 62/656,088, BIO-IMPEDANCE ANALYZER, Inventors: Abdulwadood Abdullah Al-Ali et al.
2017
- B. J. Maundy, S. Ozoguz, A. S. Elwakil and S. Gift, "The common-base differential amplifier and applications revisited," Microelectronics J., vol. 63, pp. 8-19, May 2017.
- A. Allagui, A. S. Elwakil and T. J. Freeborn, "Supercapacitor reciprocity and response to linear current and voltage ramps," Electrochimica Acta, vol. 258, pp. 1081-1085, 2017.
- G. Tsirimokou, C. Psychalinos, A. S. Elwakil and K. N. Salama, "Experimental behavior evaluation of series and parallel connected constant phase elements," Int. J. Electronics and Communications (AEUE), vol. 74, pp. 5-12, April 2017.
- A. S. Elwakil, B. J. Maundy and C. Psychalinos, "On the pinched hysteresis behavior in a state-controlled resistor," Int. J. Electronics and Communications (AEUE), vol. 74, pp. 171-175, 2017.
- G. Tsirimokou, C. Psychalinos and A. S. Elwakil, Design of CMOS Analog Integrated Fractional-Order Circuits: Applications in Medicine and Biology, Springer, 111 pages, ISBN 978-3-319-55632-1, (DOI: 10.1007/978-3-319-55633-8), 2017.
- A. S. Elwakil, A. Agambayev, A. Allagui and K. N. Salama, "Experimental demonstration of fractional-order oscillators of orders 2.6 and 2.7," Chaos Solitons & Fractals, vol. 96, pp. 160-164, March 2017.
- M. Fouda, A. G. Radwan and A. S. Elwakil, Memristor and Inverse Memristor: Modeling, Implementation and Experiments, Chapter 15 in Advances in Memristors, Memristive Devices and Systems (Eds. S. Vaidyanathan and C. Volos), Studies in Computational Intelligence Series, Springer Verlag, Germany, pp. 371-392, 2017.
- I. Dimeas, G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Experimental verification of fractional-order filters using a reconfigurable fractional-order impedance emulator," J. Circuits Systems and Computers, vol. 16, no. 9, pp. 1750142, 2017.
- A. S. Elwakil, A. G. Radwan, T. J. Freeborn, A. Allagui, B. J. Maundy and M. Fouda, "Low-voltage commercial super-capacitor response to periodic linear-with-time current excitation: A case study," IET Circuits Devices & Syst., vol. 11, no. 3, pp. 189-195, 2017.
- G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Fractional-order electronically controlled generalized filters," Int. J. Circuit Theory & Applications, Wiley, vol. 45, no. 5, pp. 595-612, May 2017.
- A. S. Elwakil, A. Allagui, T. J. Freeborn and B. J. Maundy, "Further experimental evidence of the fractional-order energy equation in supercapacitors," Int. J. Electronics and Communications (AEUE), vol. 78, pp. 209-212, August, 2017.
- B. J. Maundy, A. S. Elwakil, S. Ozoguz and H. Yildiz, "Minimal two-transistor multifunction filter design," Int. J. Circuit Theory & Applications, Wiley, vol. 45, pp. 1449-1466, Nov. 2017.
- T. J. Freeborn, A. S. Elwakil and B. J. Maundy, "Variability of Cole-model bioimpedance parameters using magnitude-only measurements of apples from a two-electrode configuration," Int. J. Food Properties, vol. 20, no. sup1, pp. S507-S519, Taylor & Francis, (
- DOI:/10.1080/10942912.2017.1300810), 2017.
- A. Allagui, J. M. Ashraf, M. Khalil, M. Abdelkareem, A. S. Elwakil and H. Alawadhi, "All solid-state double-layer capacitors using binderless reduced graphene oxide thin films prepared by bipolar electrochemistry," ChemElectroChem, Wiley, vol. 4, no. 8, pp. 2084-2090, August, 2017.
- A. AboBaker, L. Said, A. Madian, A. S. Elwakil and A. G. Radwan, "Experimental comparison of integer/fractional-order electrical models of plant tissues," Int. J. Electronics and Communications (AEUE), vol. 80, pp. 1-9, Oct. 2017.
- P. Bertsias, C. Psychalinos, A. S. Elwakil and B. J. Maundy, "Current-mode capacitorless integrators and differentiators for implementing emulators of fractional-order elements," Int. J. Electronics and Communications (AEUE), vol. 80, no. 10, pp. 94-103, 2017.
- B. J. Maundy, A. S. Elwakil and C. Psychalinos, "CMOS realization of all positive pinched hysteresis loops," Complexity, article 7863095, (DOI:10.1155/2017/7863095), 2017.
- C. Psychalinos, A. S. Elwakil, A. Allagui and A. Tepljakov, "Special issue on recent advances in the design and applications of fractional-order circuits and systems," Int. J. Electronics and Communications (AEUE), vol. 81, pp. 132-135, Nov. 2017.
- B. J. Maundy, A. S. Elwakil and A. Elamien, "Oscillator with tunable phase capability," Electronics Letters, vol. 53, no. 23, pp. 1516-1518, Nov. 2017.
- A. Agambayev, S. Patole, M. Farhat, A. S. Elwakil, H. Bagci and K. N. Salama, "Tunable ferroelectric fractional-order capacitors," ChemElectroChem, Wiley, vol. 4, no. 11, pp. 2807-2813, Nov. 2017. (DOI: 10.1002/celc.201700663).
- A. Allagui, Z. Said, M. A. Abdelkareem, A. S. Elwakil, M. Yang and H. Alawadhi, "DC and AC performance of graphite films supercapacitors prepared by contact glow discharge electrolysis," J. Electrochemical Society, vol. 164, no. 12, pp. A2539-A2546, DOI: 10.1149/2.1161712jes, 2017.
2016
- A. S. Elwakil and B. J. Maundy, "Calculating output impedance in linear networks without source or load disconnect: The instantaneous output impedance," Int. J. Circuit Theory & Applications, Wiley, vol. 44, no. 1, pp. 98-108, 2016.
- A. Allagui, M. Abdelkareem, H. Alawadhi and A. S. Elwakil, "Reduced graphene oxide thin film on conductive substrates by bipolar electrochemistry," Scientific Reports, Nature, 6, 21281, 2016.
- G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Switched-capacitor fractional-step Butterworth filter design," Circuits Systems and Signal Processing, Springer, vol. 35, no. 4, pp. 1377-1393, 2016.
- T. J. Freeborn, A. S. Elwakil and B. J. Maundy, "Approximating fractional-order inverse Chebyshev lowpass filters," Circuits Systems and Signal Processing, Springer, vol. 35, no. 6, pp. 1973-1982, 2016.
- A. S. Elwakil, A. Allagui, B. J. Maundy and C. Psychalinos, "Low frequency oscillator using a super-capacitor," Int. J. Electronics and Communications (AEU), vol. 70, no. 7, pp. 970-973, 2016.
- C. Psychalinos, A. S. Elwakil, A. G. Radwan and K. Biswas, "Guest Editorial: Fractional-Order Circuits and Systems: Theory, Design, and Applications," Circuits Systems and Signal Processing, Springer, vol. 35, no. 6, pp. 1807-1813, 2016.
- P. Ahmadi, B. Maundy, A. S. Elwakil, L. Belostotski and A. Madanayake, “A new 2nd–order allpass filter in 130nm CMOS,” IEEE Trans. Circuits & Syst.-II, vol. 63, no.3, pp. 249-253, March, 2016.
- T. J. Freeborn, A. S. Elwakil and B. Maundy, "Compact wide frequency range fractional-order models of human body impedance against contact currents," Mathematical Problems in Engineering, Special Issue on Theory and Applications of Fractional Order Systems, vol. 2016, Article ID 4967937, DOI:10.1155/2016/4967937.
- A. S. Elwakil and B. J. Maundy, "Indirect realization of the imaginary resistor jR," Circuits Systems and Signal Processing, Springer, vol. 35, no. 7, pp. 2610-2615, 2016.
- M. E. Fouda, A. S. Elwakil, A. G. Radwan and B. J. Maundy, "Fractional-order two-port networks," Mathematical Problems in Engineering, Special Issue on Theory and Applications of Fractional Order Systems, vol. 2016, Article ID 5976301, DOI:10.1155/2016/5976301.
- A. Allagui, A. Roja, T. Bonny, A. S. Elwakil and M. Abdelkareem, "Nonlinear time-series analysis of current signal in cathodic contact glow discharge electrolysis," J. Applied Physics, 119 203303, 2016.
- B. Maundy, A. S. Elwakil and S. Gift, “On a class of cross coupled fully differential filters,” Int. J. Circuit Theory & Applications, Wiley, vol. 44, pp. 1425-1436, July 2016.
- C. Psychalinos, A. S. Elwakil, B. Maundy and A. Allagui, "Analysis and realization of a switched fractional-order-capacitor integrator," Int. J. Circuit Theory & Applications, Wiley, vol. 44, no. 11, pp. 2035-2040, 2016.
- M. Fouda, A. S. Elwakil, A. G. Radwan and A. Allagui, "Power and energy analysis of fractional-order electrical energy storage devices," Energy, vol. 111, pp. 785-792, Sept. 2016.
- G. Tsirimokou, C. Psychalinos, A. S. Elwakil and K. N. Salama "Experimental verification of on chip CMOS fractional-order capacitor emulators," Electronics Letters, vol. 52, pp. 1298-1300, July 2016.
- G. Tsirimokou, C. Psychalinos, T. J. Freeborn and A. S. Elwakil, "Emulation of current excited fractional-order capacitors and inductors using OTA topologies," Microelectronics J., vol. 55, pp. 70-81, Sept. 2016.
- A. Allagui, A. S. Elwakil, B. Maundy and T. J. Freeborn, “Spectral capacitance of series and parallel combinations of super-capacitors,” ChemElectroChem, Wiley, vol. 3, no. 9, pp. 1429-1436, Sept. 2016.
- A. G. Radwan, B. J. Maundy and A. S. Elwakil, "Fractional-order oscillators," Chapter 3 in Oscillator Circuits, Frontiers in Design, Analysis and Applications, Editor Yoshifumi Nishio, pp. 25-49, IET, Dec. 2016.
- A. Allagui, A. S. Elwakil, T. J. Freeborn and B. J. Maundy, "Reevaluation of performance of electric double-layer capacitors from constant current charge/discharge and cyclic voltammetry," Scientific Reports, Nature, 6:38568, Dec. 2016. (DOI: 10.1038/srep38568).
2015
- A. Allagui and A.
S. Elwakil,
"On the N-shaped conductance and hysteretic behavior of contact glow
discharge electrolysis," Electrochimica Acta, Elsevier, vol. 168, pp.
173-177, 2015.
- A. S.
Elwakil and
B. J. Maundy, "Second order bandstop and bandpass filters using
transformers," Microelectronics J., Elsevier, vol. 46, no. 8,
pp. 690-697, 2015.
- T. J. Freeborn,
A. S. Elwakil
and B. J. Maundy, "Fractional-order models of supercapacitors,
batteries and fuel cells: A survey," Materials for Renewable
and Sustainable Energy, Springer, vol. 4, no. 3, pp. 1-7, 2015.
- M. Fouda, A.
S. Elwakil
and A. G. Radwan, "Pinched hysteresis with inverse-memristor
frequency characteristics in some nonlinear circuit elements," Microelectronics
J.,
Elsevier, vol. 46, no. 9, pp. 834-838, 2015.
- G.
Tsirimokou, C. Psychalinos, A. S. Elwakil and A. Allagui, “Simple non-impedance-based measuring technique for supercapacitors,” Electronics
Letters, vol. 51, no. 21, pp. 1699-1701, 2015.
- B. Maundy, A. S. Elwakil and A. Allagui, "Extracting the parameters of the single-dispersion Cole bioimpedance model using a magnitude-only method," Computers and Electronics in Agriculture, vol. 119, pp. 153-157, 2015.
- G. Tsirimokou, C. Psychalinos and A. S. Elwakil, "Emulation of a constant phase element using operational transconductance amplifiers," Analog Integrated Circuits & Signal Processing, Springer, vol. 85, (3), pp. 413-423, Dec. 2015.
2014
- A.
S. Elwakil and B.
J. Maundy, "Mapping of circuit variables into two-port network
variables in basic amplifier structures: identifying new
topologies," Int. J. Circuit Theory & Applications, vol. 42, no. 11, pp.
1203-1208, 2014.
- A.
S. Elwakil,
"Clock-driven chaotic pulse-width generators: An overview and
demonstration of power supply attack," Int. J. Bifurcation
& Chaos, vol.
24, no. 6, pp. 1450079-1450086, June 2014.
- A.
S. Elwakil and B.
J. Maundy, "Single transistor active filters: What is possible and
what is not," IEEE Trans. Circuits & Syst.-I, vol. 61, no. 9, pp.
2517-2524, Sept. 2014.
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, "Extracting the
parameters of the double-dispersion Cole bioimpedance model without direct
impedance measurement," Medical & Biological Engineering
& Computing,
Springer, vol. 52, no. 9, pp. 749-758, 2014.
- H.
Yu, A. S. Elwakil, L. Reyashko, Y. Wang and G. Chen, Guest Editorial, Special
Issue on Chaos-Fractals Theories and Applications, Mathematical
Problems in Engineering, (http://dx.doi.org/10.1155/2014/567281),
2014.
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, "Approximated fractional-order Chebychev lowpass filters," Mathematical Problems
in Engineering,
(http://dx.doi.org/10.1155/2014/832468), 2014.
- H.
Yildiz, A. Toker, A. S. Elwakil and S. Ozoguz, "MOS-only allpass
filters with extended operating frequency range,"Analog Integrated
Circuits & Signal Processing, Springer, vol. 81, no. 1, pp. 17-22, 2014.
2013
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, Fractional Step Analog
Filter Design, Book Chapter in `Analog/RF and Mixed Signal Circuit
Systematic Design`, Chapter 11, pp. 243-267, Springer, 2013.
- A.
S. Elwakil,
A. Fouda and A. G. Radwan, "A simple model of double-loop hysteresis
behavior in memristive elements", IEEE Trans. Circuits &
Syst.-II, vol.
60, pp. 487-491, August 2013.
- T.
J. Freeborn, B. Maundy and A. S. Elwakil, "Measurement of
supercapacitor fractional-order model parameters from voltage-excited step
response," IEEE J. Emerging and Selected Topics in
Circuits & Systems, vol. 3, pp. 367-376, Sept. 2013.
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, "Cole impedance
extractions from the step-response of a current excited fruit
sample," Computers and Electronics in Agriculture, Elsevier, vol. 98, pp. 100-108,
2013.
- A.
S. Elwakil,
B. J. Maundy, L. Fortuna and G. Chen, Guest Editorial, Special Issue on
Fractional-Order Circuits and Systems, IEEE J. Emerging and Selected
Topics in Circuits and Systems, vol. 3, no. 3, Sept. 2013.
2012
- B.
J. Maundy and A. S. Elwakil, "Extracting single dispersion Cole-Cole
impedance model parameters using an integrator setup," Analog
Integrated Circuits & Signal Processing, Springer, vol. 71, no. 1,
pp. 107-110, 2012.
- B.
J. Maundy, A. S. Elwakil and S. Gift, "On the realization of
multi-phase oscillators using fractional-order allpass filters,"
Circuits Syst. & Signal Processing, Springer, vol. 31, pp. 3-17, Feb.
2012.
- A.
G. Radwan and A. S. Elwakil, "An expression for the voltage response of a
current-excited fractance device based on fractional-order trigonometric
identities," Int. J. Circuit Theory & Applications, vol. 40, pp.
533-538, May 2012.
- T.
J. Freeborn, B. Maundy and A. S. Elwakil, "Least squares
estimation technique of Cole-Cole parameters from step response," Electronics
Letters, vol.
48, pp. 752-754, June 2012.
- P.
Ahmadi, B. J. Maundy, A. S. Elwakil and L. Belostotski "High quality
factor asymmetric-slope band-pass filters: A fractional-order capacitor
approach," IET Circuits Devices & Syst., vol. 6, pp. 141-210, April
2012.
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, "Fractional-step
Tow-Thomas Biquad filters," IEICE Nonlinear Theory and its
Applications NOLTA, vol. 3, no. 3, pp. 357-374, 2012.
2011
- B.
J. Maundy, A. S. Elwakil and T. Freeborn, "On the practical
realization of higher-order filters with fractional stepping," Signal
Processing,
Elsevier, vol. 91, pp. 484-491, 2011.
- A.
S. Elwakil
and M. Al-Ridhawi, "All possible second-order four-impedance
two-stage Colpitts oscillators," IET Circuits Devices & Syst. vol. 5, pp. 196-202, May
2011.
- A.
S. Elwakil,
"Ring oscillator structures with explicitly separated
nonlinearity," Int. J. Circuit Theory & Applications, vol. 39, pp. 1079-1086,
Oct. 2011.
- T.
J. Freeborn, B. J. Maundy and A. S. Elwakil, "Numerical
extraction of Cole-Cole impedance parameters from step
response," IEICE Nonlinear Theory and its Applications NOLTA, vol. 2, no. 4, pp.
548-561, Oct. 2011.
2010
- B. J. Maundy, A.
S. Elwakil
and S. Gift "On a multivibrator that employs a fractional
capacitor," Analog Integrated Circuits & Signal Processing, vol. 62, pp. 99-103,
2010.
- A. S.
Elwakil
and K. N. Salama, "Higher-dimensional models of cross-coupled
oscillators and application to design," J. Circuits Systems &
Computers,
vol. 19, pp. 787-799, June 2010.
- A. S.
Elwakil,
"A non-conservative model of second-order RC sinusoidal
oscillators," J. Circuits Systems & Computers, vol. 19, pp. 871-877,
June 2010.
- A. S.
Elwakil
and M. A. Murtada "All possible canonical second-order
three-impedance class-A and class-B oscillators" Electronics
Letters,
vol. 46, pp. 748-749, 2010.
- A. S.
Elwakil,
S. Ozoguz and K. N. Salama, "Sinusoidal oscillators with lower gain
requirements at higher frequencies based on an explicit tanh(x)
nonlinearity," Int. J. Circuit Theory & Applications, vol. 38, pp. 747-760,
Sept. 2010.
- A. S.
Elwakil,
"Design of non-balanced cross-coupled oscillators with no matching
requirements," IET Circuits Devices & Syst., vol. 4, pp. 365-373,
Sept. 2010.
- A. S.
Elwakil
and B. J. Maundy, "Extracting the Cole-Cole impedance model
parameters without direct impedance measurement," Electronics
Letters,
vol. 46, pp. 1367-1368, Sept. 2010
- T. J. Freeborn,
B. J. Maundy and A. S. Elwakil, "Field programmable analog array implementation of fractional step filters," IET
Circuits Devices & Syst., vol. 4, pp. 514-524, Nov. 2010.
- A. S.
Elwakil,
"Fractional order circuits and systems: An emerging interdisciplinary research area," IEEE Circuits & Systems Magazine, vol. 10, no. 4, pp.
41-50, 2010.
- A. Abid, Q.
Nasir and A. S. Elwakil, "Implementation of an encrypted wireless
communication system using nested chaotic maps," Int. J.
Bifurcation & Chaos, vol. 20, pp. 4087-4096, Dec. 2010.
- A. S.
Elwakil
and B. J. Maundy, "On the two-port network analysis of common
amplifier topologies," Int. J. Circuit Theory & Applications, vol. 38, pp. 1087-1100,
Dec. 2010.
- A. S.
Elwakil,
"Motivating two-port network analysis through elementary and advanced
examples," Int. J. Electrical Engineering Education, vol. 47, pp. 404-415,
Oct. 2010.
2009
- A. G. Radwan, A. S.
Elwakil
and A. M. Soliman "On the generalization of second-order filters to
the fractional-order domain," J. Circuits Systems & Computers, vol. 18, pp. 361-386,
April 2009.
- A. S. Elwakil and K. N. Salama, "On
the nonlinear modeling of ring oscillators," J. Circuits Systems
& Computers,
vol. 18, pp. 681-696, June 2009.
- A. G. Radwan, A. M. Soliman
and A. S. Elwakil, "On the stability of linear systems with
fractional-order elements," Chaos Solitons & Fractals, vol. 40, pp. 2317-2328,
June 2009.
- A.
S. Elwakil,
"On the two-port network classification of Colpitts
oscillators," IET Circuits Devices & Syst., vol. 3, no. 5, pp. 223-232,
Oct. 2009.
2007-2008
- A.
G. Radwan, A. M. Soliman and A. S. Elwakil, "1-D
digitally-controlled multi-scroll chaos generator," Int. J.
Bifurcation & Chaos, vol. 17, pp. 227-242, Jan. 2007.
- A.
G. Radwan, A. M. Soliman and A. S. Elwakil, "Fractional-order
sinusoidal oscillators: Four practical circuit design examples," Int.
J. Circuit Theory & Applications, vol. 36, pp. 473-492, June 2008.
- A.
S. Elwakil
and S. Ozoguz, "A system and circuit for generating
multi-butterflies," Int. J. Bifurcation & Chaos, vol. 18, pp. 841-844,
March 2008.
- A.
G. Radwan, A. S. Elwakil and A. M. Soliman "First order filters
generalized to the fractional domain," J. Circuits Systems &
Computers,
vol. 17, pp. 55-66, Feb. 2008.
- A.
G. Radwan, A. S. Elwakil and A. M. Soliman, "Fractional-order
sinusoidal oscillators: Design procedure and practical examples," IEEE
Trans. Circuits & Syst.-I, vol. 55, pp. 2051-2063, Aug. 2008.
- A.
S. Elwakil and
A. M. Elkhouly "A study of equilibrium points and stability in a
nonlinear model of a phase-compensated operational amplifier," Circuits
Syst. & Signal Processing, Springer, vol. 27, pp. 781-798, Oct. 2008.
2005-2006
- A. S.
Elwakil,
"A generic model for voltage-controlled second-order RC sinusoidal
oscillators," J. Circuits Syst. & Computers, vol. 14, pp. 297-305,
April 2005.
- S. Ozoguz, T.
Abdelrahman and A. S. Elwakil, "Novel approximate square-root domain
all-pass filter with application to multiphase oscillators," Analog
Integrated Circuits & Signal Processing, vol. 46, no. 3, pp.
297-301, 2006.
- A. S.
Elwakil,
"Explaining Hysteresis in Electronic Circuits," Int. J.
Electrical Engineering Education, vol. 43, pp. 252-260, July 2006.
- A. S.
Elwakil,
"Explaining and eliminating latchup in a classical Wien oscillator
via nonlinear design," Analog Integrated Circuits & Signal
Processing,
vol. 48, pp. 239-245, Sept. 2006.
- A. S.
Elwakil
and S. Ozoguz, "On the generation of higher-order chaotic oscillators
via passive coupling of two identical or nonidentical sinusoidal
oscillators," IEEE Trans. Circuits & Syst.-I, vol. 53, pp. 1521-1532,
July 2006.
- A. S.
Elwakil
and S. Ozoguz, "Multi-scroll chaotic attractors: The nonautonomous
approach," IEEE Trans. Circuits & Syst.-II, vol. 53, pp. 862-866,
Sept. 2006.
- S. Ozoguz, A.
S. Elwakil
and S. Ergun "Cross-coupled chaotic oscillators and application to
random bit generation," IEE Circuits Devices & Syst., vol. 153, pp. 506-510,
Oct. 2006.
2003-2004
- A.
S. Elwakil
and S. Ozoguz, "Chaos in a pulse-excited resonator with self
feedback," Electronics Letters, vol. 39, pp. 831-833, 2003.
- A.
S. Elwakil,
S. Ozoguz and M. P. Kennedy, "A four wing butterfly chaotic attractor
fom a fully autonomous system," Int. J. Bifurcation & Chaos, vol. 13, pp. 3093-3098,
2003.
- W.
M. Halalu and A. S. Elwakil, "Research-oriented junior/senior design
projects: An analog circuit-design example," IEEE Trans. Education, vol. 47, pp. 93-99, Feb.
2004.
- A.
S. Elwakil,
"Integrator-based circuit-independent chaotic oscillator
structure," Chaos, vol. 14, pp. 364-369, 2004.
- S.
Ozoguz and A. S. Elwakil, "On the realization of circuit-independent
nonautonomous pulse-excited chaotic oscillator circuits," IEEE
Trans. Circuits & Syst.-II, vol. 51, pp. 552-556, 2004.
2001-2002
- A.
S. Elwakil
and M. P. Kennedy, "Construction of classes of circuit-independent
chaotic oscillators using passive-only nonlinear devices," IEEE
Trans. Circuits & Syst.-I, vol. 48, pp. 289-307, 2001. (fast
moving front in the Field of Mathematics, January 2007 by Thomson
ScienceWatch)
- W.
Ahmed, R. Elkhazali and A. S. Elwakil, "Fractional-order Wien-bridge oscillator,"
Electronics Letters, vol. 37, pp. 1110-1112, 2001.
- A.
S. Elwakil,
"Nonautonomous pulse-driven chaotic oscillator based on Chua's
circuit," Microelectronics J., vol. 33, pp. 479-486, 2002.
- A.
S. Elwakil,
S. Ozoguz and M. P. Kennedy, "Creation of a complex butterfly
attractor using a novel Lorenz-type system," IEEE Trans. Circuits
& Syst.-I,
vol. 49, pp. 527-530, 2002.
- A.
S. Elwakil
and W. M. Ahmed, "On the necessary and sufficient conditions for
latch-up in sinusoidal oscillators," Int. J. Electronics, vol. 89, pp. 197-206,
2002.
- S.
Ozoguz, A. S. Elwakil and K. N. Salama, "N-scroll chaos generator
using nonlinear transconductor," Electronics Letters, vol. 38, pp. 685-686,
2002.
- S.
Ozoguz, A. S. Elwakil and M. P. Kennedy, "Experimental verification
of the butterfly attractor in a modified Lorenz system," Int. J.
Bifurcation & Chaos, vol.12, pp. 1627-1633, 2002.
- A.
S. Elwakil,
K. N. Salama and M. P. Kennedy, "An equation for generating chaos and
its monolithic implementation," Int. J. Bifurcation & Chaos, vol. 12, pp. 2885-2895,
2002.
- A.
S. Elwakil,
and M. P. Kennedy, (2002) 'Design methodology for autonomous chaotic
oscillators' In: Chen, G. and Ueta, T (eds). Chaos in Circuits and
Systems.
London: Routledge (Book Chapter) DOI:10.1067/123456.
1999-2000
- A.
S. Elwakil
and A. M. Soliman, "Wien oscillators using current conveyors," Computers
& Electrical Engineering, Elsevier, vol. 25, pp. 45-55, 1999.
- A.
S. Elwakil
and A. M. Soliman, "Mathematical models of the Twin-T, Wien-bridge
and family of minimum component electronic chaos generators with
demonstrative recurrence plots," Chaos Solitons & Fractals, vol. 10, pp. 1399-1411,
1999.
- A.
S. Elwakil
and A. M. Soliman, "Current conveyor chaos generators," IEEE
Trans. Circuits & Syst.-I, vol. 46, pp. 393-398, 1999.
- S.
A. Mahmoud, A. S. Elwakil and A. M. Soliman, "CMOS current feedback op
amp-based chaos generators using novel active nonlinear voltage-controlled
resistors with odd symmetrical characteristics," Int. J.
Electronics,
vol. 86, pp. 1441-1451, 1999.
- A.
M. Eltawil and A. S. Elwakil, "Low voltage chaotic oscillator with an
approximate cubic nonlinearity," Int. J. Electr. Commun. (AEÜ), vol. 53, pp. 158-160,
1999.
- A.
S. Elwakil
and M. P. Kennedy, "A family of Colpitts-like chaotic
oscillators," J. Franklin Institute, vol. 336, pp. 687-700,
1999.
- A.
S. Elwakil
and M. P. Kennedy, "Inductorless hyperchaos generator," Microelectronics
J.,
vol. 30, pp. 739-743, 1999.
- A.
S. Elwakil
and M. P. Kennedy, "Three-phase oscillator modified for chaos," Microelectronics
J., vol.
30, pp. 863-867, 1999.
- A.
S. Elwakil
and M. P. Kennedy, "Chaotic oscillators derived from Saito's
double-screw hysteresis oscillator," IEICE Trans. Fundamentals, vol. E82, pp. 1769-1775,
1999.
- A.
S. Elwakil
and M. P. Kennedy, "Chaotic oscillator configuration using a
frequency-dependent negative resistor," J. Circuits Systems &
Computers,
vol. 9, pp. 229-242, 1999.
- A.
S. Elwakil
and M. P. Kennedy, "Improved implementation of Chua's chaotic
oscillator using the current feedback op amp," IEEE Trans. Circuits
& Syst.-I,
vol. 47, pp. 76-79, 2000.
- A.
S. Elwakil
and M. P. Kennedy, "Chaotic oscillator configuration using a
frequency-dependent negative resistor," Int. J. circuit Theory
& Applications, vol. 28, pp. 69-76, 2000.
- A.
S. Elwakil
and M. P. Kennedy, "Novel chaotic oscillator configuration using a
diode-inductor composite," Int. J. Electronics, vol. 87, pp. 397-406,
2000.
- A.
S. Elwakil
and M. P. Kennedy, "Chua's circuit decomposition: A systematic design
approach for autonomous chaotic oscillators," J. Franklin
Institute,
vol. 337, pp. 251-265, 2000.
- A.
S. Elwakil
and M. P. Kennedy, "A low-voltage low-power chaotic oscillator
derived from a relaxation oscillator," Microelectronics J., vol. 31, pp. 459-468,
2000.
- A.
S. Elwakil
and M. P. Kennedy, "A semi-systematic procedure for producing chaos
from sinusoidal oscillators using diode-inductor and FET-capacitor
composites," IEEE Trans. Circuits & Syst.-I, vol. 47, pp. 582-590,
2000.
- A.
S. Elwakil
and M. P. Kennedy, "Chaotic oscillators derived from sinusoidal
oscillators using the current feedback op amp," Analog Integrated
Circuits and Signal Processing, vol. 24, pp. 239-252, 2000.
- A.
S. Elwakil,
"A low-voltage relaxation oscillator," Electronics Letters, vol. 36, pp. 1256-1257,
2000.
- A.
S. Elwakil
and M. P. Kennedy, "Systematic realization of a class of hysteresis
chaotic oscillators," Int. J. Circuit Theory & Applications, vol. 28, pp. 319-334,
2000.
- A.
S. Elwakil
and M. P. Kennedy, "Generic RC realizations of Chua's circuit," Int.
J. Bifurcation & Chaos, vol. 10, pp. 1981-1985, 2000.
1997-1998
- A.
S. Elwakil
and A. M. Soliman, "A family of Wien-type oscillators modified for
chaos," Int. J. Circuit Theory & Applications, vol. 25, pp. 561-579,
1997.
- A. S.
Elwakil
and A. M. Soliman, "Current mode chaos generator," Electronics
Letters,
vol. 33, pp. 1661-1662, 1997.
- A.
S. Elwakil
and A. M. Soliman, "Chaos from a family of minimum component
oscillators," Chaos Solitons & Fractals, vol. 8, pp. 335-356,
1997.
- A.
S. Elwakil
and A. M. Soliman, "Chaos from two modified oscillator configurations
using a current feedback op amp" Chaos Solitons & Fractals, vol. 8, pp. 389-410,
1997.
- A.
M. Soliman and A. S. Elwakil, "A new generalized oscillator," Electronic
Engineering,
vol. 70, pp. 22,29, 1998.
- A.
S. Elwakil
and A. M. Soliman, "Two Twin-T based op amp oscillators modified for
chaos" J. Franklin Institute, vol. 335B, pp. 771-787, 1998.
- A.
S. Elwakil,
"Systematic realization of low-frequency oscillators using composite
passive-active resistors," IEEE Trans. Instrum. Meas., vol. 47, pp. 584-586,
1998.
- A.
S. Elwakil
and M. P. Kennedy, "High frequency Wien-type chaotic
oscillator," Electronics Letters, vol. 34, pp. 1161-1162, 1998.
- A.
S. Elwakil
and A. M. Soliman, "Two modified for chaos negative impedance
converter op amp oscillators with symmetrical and antisymmetrical
nonlinearities," Int. J. Bifurcation and chaos, vol. 8, pp. 1335-1346,
1998.
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