1. Ain Shams University
Department of Electronics and Electrical
Communication Engineering
[street]
[city], [state] [zip]
Egypt
a3zekrey@gmail.com
Phone: 0020224840051
Mobile: 0201227820013
Fax: [fax]
Website: [website]
Abdelhalim Zekry, Ph. D. in Electrical Eng.
https://www.researchgate.net/profile/Abdelhalim_Zekry
Education
Thesis
Amal Hegazi, Abdelhalim Zekry: Improving Digital Signaling on Time Varying Channels using RAKE
Receiver. 01/2013,Degree: M. Sc., Supervisor: Abdelhalim Zekry, Aymen Motafa, Hossam Halas
Abdelhalim Zekry, Ahmed Abd Al-Rahman Ahmed: Digital Control Techniques for Grid-Connected Inverters.
01/2013,Supervisor: Prof. Dr. Abdel Haleem Zekry Dr. Ahmed Ali Al-Shazly
Abdelhalim Zekry, and, Enas Mohamed Mahmoud Elbarbary: A Study on the Artificial Eye. 01/2009,
Supervisor: Prof. Dr. Abd El-Halim Abd-Elnabi Zekry Ain Shams University Prof. Dr. Adel Ezzat
El-Hennawy Ain Shams University Ass. Prof. Hussam M. Elbehiery Research & Development
Center Air Defense Forces Cairo -
Mohamed Abu Elkamal `and Abdelhalim Zekry: Computer aided design of gate turn off thyristor. 01/2007,
Degree: Ph. D., Supervisor: Abdelhalim Zekry
Gihan Gomah Hamza Aly, Abdelhalim Zekry, Hassan El Ghitany: The Evaluation of Solar Cells Modules on
The Long-Term Using DAS. 01/2004,Degree: Msc., Supervisor: Prof. Dr. ABD EL HALIM ZEKRY
Prof. Dr. HASSAN EL GHITAN
Research Experience
Jan 1992 – Dec 1996
King Saud University, Department of Electrical Engineering
Riyadh, Saudi Arabia
Jan 1988 – Dec 2003
Ain Shams University, Department of Electronics and Electrical
Communication Engineering
Cairo, Egypt
Feb 1975 – Apr 1982 Development of power semiconductor Devices
Technische Universität Berlin, Faculty of Electrical Engineering, Institute of
electrical materials
Berlin, Germany

2. We developed high speed large area thyristors as well as well as gate turn off
thyristors.
Statistics
RG Score 79.22
Publications 186
Total Impact Points 59.82
Reads 0
Citations 120
Awards & Grants
Skills & Activities
Skills Electronic Engineering, Electronics and Communication Engineering, Inverters,
Renewable Energy, Wireless Communications, VLSI Technology,
Communication Engineering, Microelectronics and Semiconductor Engineering,
Solar Radiation, Silicon, Energy, Solar Cells, Photovoltaic Systems, Electrostatics,
MEMS, Circuits, Cognitive Radio, Fabrication, I-V, Microelectronics,
Communication Systems, Low Power, Photovoltaics, Epitaxy, Solar Energy
Materials, Space Vector Modulation, Mobile Communications, Network, Xilinx,
WiMAX, Software Defined Radio, WCDMA, Coding, VHDL, LTE, Energy
Systems, Energy Conversion, MIMO, Natural Gas, VLSI, Wireless Sensor
Network, FPGA, Digital Signal Processing, Communication & Signal Processing,
Cellular Communication, GSM, Information and Communication Technology,
Channel Estimation, Radio Communication, Signal Processing for
Communication, Satellite Communication, Signal Processing, Information
Theory, Spectrum Analysis, Antennas and Propagation, SDR, Estimation and
Detection Theory, Underwater Communication, Network Coding, FFT,
Adaptive Filtering, Random Processes, Estimation Theory, Adaptive
Beamforming, Array Processing, Source Coding, Discrete Signal Processing,
Array Signal Processing, Heterojunction Solar Cells, Organic Solar Cells,
Polymer Solar Cells, Channel Modeling, Silicon Solar Cells, Signal Analysis,
Electronics, VLSI Design, Pspice, CMOS, Telephony, Bluetooth, PhaseLocked
Loop, Electrical, Routing Protocols, Circuit Design, Analog Circuit Design,
Electrical Power Systems, Electronic Circuit Design, Electronic Materials,
Electronic Devices, Circuit Analysis, Power Electronic Systems, Electronic
Amplifiers, Electrical Field, saving energy system, Simulation, Modeling,
WLAN, Modeling and Simulation, MIMO Systems, Signal to Noise Ratio,
Orthogonal Frequency Division Multiplexing (OFDM), Android, Renewable

3. Energy Technologies, Silvaco, Encryption, Educational Technology, Engineering
Education, Higher Education, Microwave, Microwave Communication,
Microwave Electronics, Security, Fiber, Fiber Optics, Frequency Modulation,
Phase Shift Keying Modulation, modulation, MATLAB, Radar Communication,
Radar Systems, GPRS, Analog Signal Processing, Analog & Mixed Signal
Design, Filter Design, Filter Theory, Harmonics, PLL, Special and General
Relativity, Power Converters, Simulink, Spice, UMTS, LabVIEW, Models,
Spectrum, Spectrophotometer, PSIM, IT Systems
Languages ENGLISH
GERMAN
Scientific Memberships IEEE Societty
Interests
Publication Highlights
[authors]: [title]. [details]
Books
Ahmed Abbas, Abdelhalim Zekry, Imbaby Mahmoud: RADIATION MONITORING NETWORK USING
WCDMA An SDL Design and Implementation. 09/2014;LAP Lambert Academic Publishing., ISBN:
978-3-659-55784-2
M. A. Eldakroury, Abdel Halim Zekry, Hassanein H. Amer, Ramez M. Daoud: Roadside Networks for
Vehicular Communications, Architecture ,Applications , and Test Fields,. first edition edited by Edited by
Robel Daher and Alexey Vinal, 01/2013;Published by IGI Global,.
Abdelhalim Zekry: The bipolar transistors, theory and basic applications. first eddition edited by Abdelhalim
Zekry, 01/2000;Faculty of Engineering Ain Shams University.
A. Zekry: Electronic Devices. 01/1996;Faculty of Engineering ASU, Dar El-Hakeem Press, Cairo,.
A Zekry: A course on photo-voltaic array systems. 01/1996;Faculty of Engineering ASU.
Book Chapters
M.A. El-Dakroury, A.H. Zekry, H.H. Amer, R.M. Daoud: WiMAX for Traffic Control in Urban Environments.
Book of Roadside Networks for Vehicular Communications: Architectures, Applications and Test
Fields, 01/2002;
Journal Publications
Mohamed Abd, Abdelhalim Zekry: Implementing Entropy Codec for H.264 Video Compression Standard.

4. Essam Sheta, G.T. Sayah, Mohamed Abouelatta, Abdelhalim Zekry: Optimized Current-Mode Class-D RF
Power Amplifier for Software Defined Radio.
Dalia Sadek, Heba A. Shawkey, Abdelhalim Zekry: Constructing Complete Radio Frequency Receiver for LTE
TDD Transceiver.
Ahmed Shaker, Mahmoud Ossaimee, A Zekry, Mohamed Abouelatta: Influence of gate overlap engineering
on ambipolar and high frequency characteristics of tunnel-CNTFET. Superlattices and Microstructures
09/2015;86:518-530.DOI:10.1016/j.spmi.2015.08.008
Marwa Mansour, R.S. Ghoname, Abdelhalim Zekry: Building Radio Frequency Transmitter for LTE User
Equipment.
Zahraa Abd El-Hamid, Moataz Samir, A. Zekry, Fathi E. Abd El-Samie, Emad S. Hassan: Continuous Phase
Modulation with Chaotic Interleaving for Different OFDM Versions. Wireless Personal Communications
07/2015; DOI:10.1007/s11277-015-2803-6
Islam Amin Ellabban, Mohamed Abouelatta, Abdelhalim Zekry: Detecting the Triple Resistance Fault in
Twisted Pair Telephone Lines.
Sameh Tahseen, Mohamed Abouelatta, Abdelhalim Zekry: : A Modified TV Tuner for Spectrum Sensing in
TV UHF Bands.
Sara M. Hassan,Abdelhalim Zekry: FPGA Implementation of LTE Downlink Transceiver with Synchronization
and Equalization.
Karim Aly Mohammad, Abdelhalim Zekry, Mohamed Abouelatta: LED Based Spectrophotometer can
compete with conventional one. 05/2015;4(2)(2). DOI:10.14419/ijet.v4i2.4504
Ahmed Sayed, R. S. Ghonam, Abdelhalim Zekry: Design of a Compact Dual Band Microstrip Antenna for Ku-
Band Applications. International Journal of Computer Applications 04/2015;Volume 115 - Number
13(13). DOI:10.5120/20210-2473
A. A. Asaker, R. S. Ghoname, A. A. Zekry: Design of a Planar MIMO Antenna for LTE-Advanced.
International Journal of Computer Applications 04/2015;Volume 115 - Number 12(12).
DOI:10.5120/20207-2465
Heba A Shawkey Dalia Sadek, Abdelhalim Zekry: Passive Front End for LTE TDD Transceiver. International
Journal of Computer Applications 04/2015;Volume 116 - Number 8(8). DOI:10.5120/20354-2542
A. M. FAWZY, R. S. GHONAME2 AND ABDELHALIM ZEKRY: DEVELOPING FRONT END
WIDEBAND SPECTRUM SENSOR FOR COGNITIVE RADIO. International Journal of Sciences:
Basic and Applied Research (IJSBAR) 04/2015;Volume 7 [Issue 3].
Enas Elbarbary, Ghada Abdelhady, Hussam Elbehiery, Abdelhalim Zekry: Secured Transparent
Computerized Voting System performance measurements. 04/2015;volume 4, no. 2(2).
DOI:10.14419/ijet.v4i2.4441
Mohamed I. GaberImbaby I. MahmoudOsama SeddikAbdelhalim Zekry: Comparison of Routing Protocols
in Wireless Sensor Networks for Monitoring Applications. International Journal of Computer
Applications 03/2015;Volume 113 - Number 12.

5. Yasmin Nabil Mousa, Abd - Al- Halim Zekry, Nariman Abd - Alsalam: An Enhanced Empirical Method on
Choosing the Highest Principal Features and the Number of Hidden Neurons in Principal Component
Analysis-Artificial Neural Network Face Recognition based System. International Journal of Computer
Applications 02/2015;Volume 111 - Number 14(14). DOI:10.5120/19605-1458
Marwa MansourR. S. GhonameAbdelhalim Zekry: A Passive Front End of Radio Transceivers for LTE Bands.
International Journal of Computer Applications 02/2015;Volume 114 - Number 8.
Mohamed Abouelatta-Ebrahim, Ahmed Shaker, Gihan T. Sayah, Christian Gontrand, Abdelhalim Zekry:
Design considerations of high voltageRESURF nLDMOS: An analytical and numerical study. Ain Shams
Engineering Journal 02/2015;89(2). DOI:10.1016/j.asej.2014.12.003
Mohamed Sami M. Yousef, Hussein A. Elsayed, Abdelhalim Zekry: Design and Simulation of Random Access
Procedure in LTE. International Journal of Computer Applications 01/2015;Volume 110 - Number
16(16). DOI:10.5120/19401-1037
Islam Amin Ellabban, Mohamed Abouelatta, Abdelhalim Zekry: Measurement of Telephone Line Parameters
using the Three Voltmeter Method. International Journal of Computer Applications 12/2014;Volume
107 - Number 11(11). DOI:10.5120/18798-0301
Yasser E. Abu Eldahaba, Naggar H. Saadb, Abdalhalim Zekryc: Enhancing the maximum power point
tracking techniques for photovoltaic systems. Renewable and Sustainable Energy Reviews 12/2014;
volume 40. DOI:10.1016/j.rser.2014.07.202
Mohamed A. Ahmed, Heba A. Shawkey, Hamed A. Elsemery, Abdelhalim A. Zekry: A fast locking digital
phase locked loop using frequency difference stage.
Ahmed Shaker, Mohamed Abouelatta, Gihan Taha Sayah, Abdelhalim Zekry: Comprehensive physically
based modelling and simulation of power diodes with parameter extraction using MATLAB. IET Power
Electronics 07/2014;DOI: 10.1049/iet-pel.2014.0014(10).DOI:10.1049/iet-pel.2014.0014
Abdelhaliem Zekry Mahmoud Elsharief, Mohamed Abouelatta: Implementing a Standard DVB-T System
using MATLAB Simulink. International Journal of Computer Applications 07/2014;Volume 98 -
Number 5(5). DOI:10.5120/17180-7275
Muhammad Annaqeeba, Hanem M. El-Sheikhb, Talaat A. Elgarfc, Abdelhalim Zekry: Software
Implementation of Advanced Encryption Standard Algorithm on Android and Windows Phone Platforms.
Nour El-Din Safwat, M. A. El-Dakroury, Abdelhalim Zekry: The Evolution of Aircraft Data Networks.
International Journal of Computer Applications 05/2014;94(11):27-32,.DOI:10.5120/16389-5968
Abdelhalim A. Zekry, Gihan Taha Sayah, Fouad A. Soliman: SPICE model of thyristors with amplifying gate
and emitter-shorts. IET Power Electronics 03/2014;Volume 7, Issue 3.
M Elhawary, G Gomah, A Zekry, I Hafez: Simulation of the E1 and E6 Galileo Signals using SIMULINK..
International Journal of Computer Applications 02/2014;88(15):41-48.DOI:10.5120/15431-4043
Enas Elbarbary, Ghada Abdelhady, Hussam Elbehiery, Abdelhahim Zekry: Secured and Transparent
Computerized Voting System accessible everywhere.
Hend A. Orabi, A. Zekry, G. Gomah: Implementation for Two-Stage Hybrid Decoding for Low Density Parity
Check (LDPC) Codes. International Journal of Computer Applications 10/2013;volume80/number3.
DOI:10.5120/13843-1669

6. Sara Hamdy, Mostafa E. A. Ibrahim, Abdelhalim Zekry: VHDL Realization of Efficient H.264 Intra Prediction
Scheme based on Best Prediction Matrix Mode. International Journal of Computer Applications
09/2013;Volume 77(No. 13). DOI:10.5120/13540-1184
Ramy A Fathy, Ahmed A AbdelHafez, Abdelhalim Zekry: A Formal Mathematical Model of Cognitive Radio.
International Journal of Computer Applications 07/2013;2(4):735-741.
Sara M. Hassan,Abdelhalim Zekry, M. AL-Saied Bayomy, Gihan G. Hamza: Software Defined Radio
Implementation of LTE Transmitter Physical Layer,. International Journal of Computer Applications
07/2013; DOI:10.5120/12909-0065
Ramy A Fathy, Abdelhalim Zekry, Ahmed A AbdelHafez: Performance Assessment of Cognitive Radio
Adaptation Engine based on Real-coded Genetic Algorithms. International Journal of Computer
Applications 06/2013;72:51-58.DOI:10.5120/12558-9315
Ramy A Fathy, Abdelhalim Zekry, Ahmed A AbdelHafez: An Evolutionary Cognitive Radio Adaptation
Engine Architecture Inspired from Cognitive Sciences. International Journal of Computer Applications
05/2013;70(25):37-45.DOI:10.5120/12226-8510
Mona S. Salem, Marwa S. Salem, A. A. Zekry, H. F. Ragai: Modeling of Q - V diagram using SPICE for
electrostatic MEMS converter found in energy scavenging systems. Applied Mechanics and Materials
03/2013;313-314:967-970.DOI:10.4028/www.scientific.net/AMM.313-314.967
Gihan G. Hamza, A. Zekry: Studying the Effect of Removing the Frequency Divider when Calibrating Standard
Frequency Sources in the Time Domain.
Ramy A. Fathy, Ahmed A. AbdelHafez and Abdelhalim Zekry: Meta-Heuristic based Adaptation Engine for
Cognitive Radio Systems. International Journal of Computer Applications 02/2013;
DOI:10.5120/10738-5686
Dina M. El-laithy, Abdelhalim Zekry, Mohamed Abouelatta: Automatic Measurements of the Performance
Parameters of Practical Phase-Locked Loops. International Journal of Computer Applications 01/2013;
DOI:10.5120/9906-4495
Ahmed Shaker, Gihan T. Sayah, Mohamed Abouelatta, Abdelhalim Zekry: Thyristor Compact Modeling
based on Gummel-Poon Model Including Parameter Extraction Procedure. International Journal of
Computer Applications 01/2013; DOI:10.5120/10010-4904
Dina M. El-laithy, Abdelhalim Zekry, Mohamed Abouelatta: Speeding-up Phase-Locked Loops based on
Adaptive Loop Bandwidth,. International Journal of Computer Applications 01/2013;
DOI:10.5120/9905-4494
Mohamed Ali, Heba Shawkey, Abdelhalim Zekry: A Survey on FM-UWB Transceivers. International
Journal of Computer Applications 01/2013; DOI:10.5120/9929-4560
Eman Mohammed Mahmoud, Abdelhalim Zekry, Ahmed Abd El Hafez, Talaat A. Elgarf: Enhancing
Channel Coding using AES Block Cipher. International Journal of Computer Applications 01/2013;
DOI:10.5120/9933-4568
O. F. Ahmed, R. S. Ghoname, A. A. Zekry: Mutual Coupling Reduction of MIMO Antennas using Parasitic
Elements for Wireless Communications,. International Journal of Computer Applications 01/2013;
DOI:10.5120/10192-5056

7. H.H. Amer, A.E.H. Zekry, S.M.S.EL. Arabi, K.E.Ghareeb, A.A.EL. Elshazly: Electrical Conductivity of
Amorphous Semiconducting Films of System (Sb20Bi20Se60-xInx).
Ahmed Abdalrahman, Abdalhalim Zekry and Ahmed Alshazly: Simulation and Implementation of Grid-
connected Inverters,. International Journal of Computer Applications 12/2012;
Amin S. Ibrahim, Abdelhalim Zekry and Hussein A. Elsayed: Design and Implementation of Radio Link
Control as a Part of the WCDMA Radio Interface Protocols by using SDL. International Journal of
Computer Applications 10/2012;Volume 56 - Number 16. DOI:10.5120/8979-3196
Md Abdul Moniem Ali Ismael and Abd El-Haleem Zekry: Design, Simulation and Implementation of the
Ethernet Simplified MAC Together with the P2MP Emulation Layer for EPON ONU Devices.
International Journal of Computer Applications 10/2012;
Ahmed M. Abbas, Abdelhalim Zekry, Imbaby I. Mahmoud, Hussein A. Elsayed: "An SDL Design and
Implementation of a Radiation Monitoring Network Using WCDMA",.
H. H. Amer, A. E. H. Zekry, S. M. S. El. Araby, K. E. Ghareeb, A. A. El. Elshazly: Characterization of New
Quaternary Chalcogenide Sb-Bi-Se-In Thin films.
H. H. Amer, A. A. Zekry, H. M. Soliman, K. E. Ghareeb: Fabrication and Characterization of Thermistor from
Amorphous Semiconductor Composition Se (90-x)Te10Cdx.
H. H. Amer, A. A. Zekry, S. Elaraby, K. E. Ghareeb: A Method for Automatic Inspection of Printed Circuit
Boards by Using the Thermal Signature.
Ahmad Mohammad, Fatama Newagy, Abd El-Haleem Zekry: A Time-domain SLM for PAPR reduction
without Side Information in SC-FDMA Systems. International Journal of Computer Applications
06/2012; DOI:10.5120/7543-0621
Marwa S. Salema, Ahmed Shakerb, Mohamed Aboulattc, A. Zekryd: Performance of a Proposed Low Cost
High Efficiency Solar Cell Structure.
Hanem M. El-Sheikh, Omayma A. El-Mohsen, Talaat Elgarf, Abdelhalim Zekry: A New Approach for
Designing Key-Dependent S-Box Defined over GF (24) in AES. 04/2012;
DOI:10.7763/IJCTE.2012.V4.442
M. Abouelatta-Ebrahim, C. Gontrand, A. Zekry: Design of complementary LDMOS in 0.35 m BiCMOS
technology for smart integration. The European Physical Journal Applied Physics 12/2011;57(01).
DOI:10.1051/epjap/2011100138
Marwa S. Salem, Diana Andra Borca, A. A. Zekry, H. F. Ragai: Fabrication and Test of Electrostatic MEMS
Converter Found in Energy Scavenging Systems. Advanced Materials Research 11/2011;403-408.
DOI:10.4028/www.scientific.net/AMR.403-408.4557
A. A. Zekry Marwa S. Salem, H. F. Ragai: Enhancing the Output Power of Vibration Based Electrostatic MEMS
Energy Converters for Energy Scavenging Systems. Advanced Materials Research 11/2011;403-408.
DOI:10.4028/www.scientific.net/AMR.403-408.4545
Hafez Fouad, and Abdelhalim Zekry: Class-E CMOS RF Power Amplifier Using Voltage-Booster for Mobile
Communication System.

8. Sarah Fouad, Yasmine Fahmy and Abd El Halim Zekry: Avoiding WIMAX Interference on Ultra Wide Band
MB-OFDM System by Cognitive Radio,. International Journal of Computer Applications 02/2011;
DOI:10.5120/10637-5379
M. Abouelatta-Ebrahim, C. Gontrand, A. Zekry: RESURF nLDMOSFET in 0.351µm BiCMOS technology-
characterization and modeling.
Ahmed Shaker, Abdelhalim Zekry: Ahmed Shaker, and Abdelhalim Zekry, A new and simple Model for Plasma
and Doping and Doping induced Band Gap Narrowing, Journal of Electronic Dsvices, Vol. 8, 2010.
Enas Elbarbary, Abd El-Halim Zekry, Hussam Elbehiery, Adel El-Hennawy: Image processing and neural
networks assist the blind",.
Gihan Gomah Hamza, Abdelhaliem A. Zekry, Mohamed N. Moustafa: “Implementation of a Complete GPS
Receiver on the C6713 DSP through Simulink Receiver”,. 06/2009;8(1). DOI:10.5081/jgps.8.1.76
Hamza, Zekry, Motawie: Hamza, G.; Zekry, A.; Motawie, I., “Implementation of a complete GPS receiver using
simulink”, IEEE Circuits and Systems Magazine, Volume 9 Issue 4, 2009.. IEEE Circuits and Systems
Magazine 01/2009;9(4).
Hafez Fouad, Abd El-Halim Zekry: “Performance Optimization of 2.4 GHz 0.13 CMOS Class-E Power
Amplifier for Mobile Communications".
Marwa S. Salem, A. A. Zekry, H. F. Ragai: Determining the Required Pulses for Controlling the Operation of
Electrostatic MEMS Converters.
I. M. Hafez, A. Zekry: I. M. Hafez and A. Zekry, “Micro – thyristor based sequential circuits and systems
simulation “, INT. J. Electronics, Vol.91, No.2, Feb. 2004..International Journal of Electronics 01/2004;
Vol.91(No.2).
I. M. Hafez, A. Zekry: I. M. Hafez and A. Zekry, “Novel design and simulation of micro – thyristor based flip-flop
circuits “, INT. J. Electronics, Vol.91, No.2, Feb. 2004. International Journal of Electronics 01/2004;
Vol.91(2).
A. Zekry, I. M. Hafez: The Foundations of a Novel Micro – thyristor SRAM Cell.
A. Zekry, I.M. Hafez, M.M. El-Hady: The microthyristor could be a promising microelectronics device. IEEE
Transactions on Electron Devices 11/2002;49(10-49):1821 - 1825.DOI:10.1109/TED.2002.803632
I. M. Hafez, A. Zekry: “Novel Design and Simulation of a Micro – thyristor based Flip-Flop Circuits.
I. M. Hafez A. Zekry, M. El-Hady: “Design and Analysis of a New the MOS-SRAM Cell “.
M.S. Farid, A Zekry, A.A. El-Shazly, M.A. El-Koosy: M.S. Farid, A Zekry, A.A. El-Shazly, and M.A. El-Koosy,
“Evaluation of optical and thermal behavior of a 3FPT photovoltaic modules”, Renewable Energy 23, 2001..
Renewable Energy 01/2001;
A.A. Elshazly, A. Zekry, M.A. El-Koosy, M.s. Farid: A.A. Elshazly,A. Zekry , M.A. El-Koosy and M.s. Farid,
“Three flat plate terrestrial module fabrication and testing”, Renewable Energy 23, 2001.. Renewable
Energy 01/2001;
M. Hamza El-Saba, A. Zekry: A fast CAD model of plasma spread in thyristors using a seminumerical time-
domain approach. IEEE Transactions on Electron Devices 10/1999;46(9-46):1901 - 1909.
DOI:10.1109/16.784192

9. Kh. Kirah, A. Zekry, H. F. Ragaie, W. F. Fikry: Kh. Kirah, A. Zekry, H.F. Ragaie and W.F. Fikry, “Modeling of
the transient behavior of anodic oxides formed in Si/HF electrolyte systems”, J. Electrochemical Society,
Vol.145, No.1 Jan. 1998.. Journal of The Electrochemical Society 01/1998;, Vol.145(No.1).
A.R.M. Alamoud, A. Zekry: “Basic structure of photo – electrochemical cathodes for hydrogenproduction by
water analysis.
A. Zekry, A.Y. Al-Mazroo: A distributed SPICE-model of a solar cell. IEEE Transactions on Electron Devices
06/1996;43(5-43):691 - 700. DOI:10.1109/16.491244
A. Zekry, A.A. El-Amoud: Static and small signal characteristics of photo – electrochemical cathodes.
A. Zekry, A.A. El-Amoud: Modeling of the electrical behavior of Metal-Electrolyte (M-E) junctions for water
electrolysis,.
A. Zekry, M. Abdel-Naby, H.F. Ragaie, F. El Akkad: Capacitance and conductance of ZnxCd1-xS/ZnTe
heterojunctions. IEEE Transactions on Electron Devices 03/1993;40(2-40):259 - 266.
DOI:10.1109/16.182498
M. Abdelnaby, A. Zekry, F. Elakkad, H. F. Ragaie: M. Abdelnaby, A. Zekry, F. Elakkad and H. F. Ragaie,“
Dependence of dark current on zine concentration in Znx Cd1-x S/Zn Te hetero – junctions“, Solar Energy
Materials and Solar Cells 29 (1993).. Solar Energy Materials and Solar Cells 01/1993;
Abdelhalim Zekry: The dependence of diffusion length, lifetime and emitter Gummel-number on temperature and
doping. Electrical Engineering 02/1992;75(2):147-154.DOI:10.1007/BF01577633
Abdelhalim Zekry: Phenomenological parameters of the spreading velocity in thyristors. Electrical Engineering
01/1992;75(5):351-357.DOI:10.1007/BF01576105
A. Zekry: The effect of emitter length on current gain and current crowding in planar bipolar transistors.
A. Zekry: On the magnetic dual-collector long vertical-base bipolar transistors.
M. Hamza, A. Zekry: A CAD model for plasma spread in thyristors.
Zekry: “Computer-aided analysis of stepped sine wave inverters. Solar Energy Materials and Solar Cells
01/1991;volume 31.
A. Zekry: 13. A. Zekry, “The effects of emitter-shorts on plasma propagation in thyristors”, Solid State Electronics,
Vol.33, No.3, 1990..Solid-State Electronics 01/1990;, Vol.33(No.3).
A. Zekry, W. Gerlach: Reduction of the Current Gain of the n-p-n Transistor Component of a Thyristor Due to the
Doping Concentration of the p-Base. IEEE Transactions on Electron Devices 04/1988;35(3-35):365 - 372.
DOI:10.1109/16.2463
A. Zekry: A new theory for band gap shrinkage.
A. Zekry, G. El-Dllal: A. Zekry and G. El-Dllal, “ effect of MS contact on the electrical behavior of solar cells”,
Journal of solid-state Electronics, Vol.31, No.1, 1988.. Solid-State Electronics 01/1988;Vol.31.
S.H. Gamal, A. Zekry, M.N. Saleh: A method for the measurement of the diffusion length and the pn product in
silicon. IEEE Transactions on Electron Devices 06/1987;34(5-34):1121 - 1127. DOI:10.1109/T-
ED.1987.23053

10. A. Elemawy, A. Zekry, M. El-Koosy, H. F. Ragai: A. Elemawy, A. Zekry, M. El-Koosy and H.F. Ragai,
“Properties of Diffused Resistors in Silicon”, Journal of Solid-State Electronics, Vol.31, No.19, 1986.Solid-
State Electronics 09/1986;Volume 31(No. 9).
M.I. Mousa A. Zekry, H. Fikry: Modeling of SIS solar cells”.
A. Zekry, W. Gerlach: Investigation of the lateral turn-on process of thyristors with an epitaxial p-base. IEEE
Transactions on Electron Devices 03/1983;30(2-30):104 - 110. DOI:10.1109/T-ED.1983.21082
S. Elewa, A. Zekry, M. El-Koosy, H.F. Ragazi, M.N. Saleh: Spectral response in polycrystalline silicon solar
cells.
Conference Proceedings
N. Safwat, Abdelhalim Zekry, Mohamed Abouelatta: Avionics full-duplex switched Ethernet (AFDX):
Modeling and Simulation. Radio Science Conference (NRSC), Cairo, Egypt; 03/2015
Mohamed E. El-Telbany, Ayman Y. Mahgoub, Abdelhalim Abdelnaby Zekry: An Intelligent Fuzzy
Controller for Maximum Power Point Tracking.. 10 th International Computer Engineering Conference,
Cairo, Egypt; 12/2014
Mohamed Salah, Abdelhalim Zekry: Efficient FPGA Implementation of OFDM Physical layer for SDR-Based
Applications. 10 th International Computer Engineering Conference ICENCO 2014, Cairo, Egypt;
12/2014
Shereen M. Mosharafa, Gamal A. Ebrahim, Abdelhalim A. Zekry: An Efficient Multiplexing Approach for
MPEG-2 Transport Stream Encoder. 2014 9th International Conference on Computer Engineering and
Systems (ICCES), Cairo; 12/2014
Shereen M. Mosharafa, Gamal A. Ebrahim, Abdelhalim A. Zekry: A Novel Algorithm for Synchronizing
Audio and Video Streams in MPEG-2 System Layer. 2014 9th International Conference on Computer
Engineering and Systems (ICCES), Cairo; 12/2014
Zakaria Zakaria Hassan TalaatA. Elgarf Abdelhalim Zekry: Modifying Authentication Techniques in Mobile
Communication Systems. The Third International Conference on Cyber Security, Cyber Warfare, and
Digital Forensic (CyberSec2014), Beirut,Lebanon; 05/2014
Ahmed Abdalrahman, Abdalhalim Zekry: Control of The Grid-connected inverter using dsPIC Microcontroller.
2013 Second International Japan-Egypt Conference on Electronics, Communications and Computers
(JEC-ECC); 12/2013
M. Ali, H. Shawkey, A. Zekry: Ultra-low power 3.5–4.5GHz FM-UWB transmitter,. Electronics,
Communications and Photonics, 2013 Saudi International Conference(SIECPC) 27-30 April 2013;
04/2013
Anwar Sahbel, Naggar Hassan,Magdy Abdelhameed and Abdelhalim Zekry: Experimental Performance
Characterization of Photovoltaic Modules Using DAQ,. .TerraGreen13 conference; 02/2013
Khaled Y. Youssef, Ahmed A. Hafez, and Abdel Halim A. Zekry: Dynamic Security Architecture for Next
Generation Wireless Networks,. The International Conference on Computer Engineering & Systems,
ICCES'2012, Cairo, Egypt.; 11/2012

11. Eman M. Mahmoud, Talaat A. Elgarf, Ahmed Abd Elhafez, Abd El-halim Zekry: Implementation and
Evaluation of Variable Bit Rates CELP Coder. , International Conference on Computer Engineering and
Systems ICCES2012,; 11/2012
Ahmad Mohammad, Abdelhalim Zekry, and Fatama Newagy: A time domain SLM for PAPR reduction in
SC-FDMA systems. The 2012 IEEE Global High Tech Congress on Electronics; 11/2012
Marwa S. Salem, Ahmed Shaker, Mohamed Aboulatta, Abdelhalim Zekry: Effect of Base Width Variation on
the Performance of a Proposed Ultraviolet Low Cost High Efficiency Solar Cell Structure. IEEE 38th
Photovoltaic Specialist Conference (PVSC); 06/2012
Amiro George R. G. Hanna,Abdelhalim Zekry: Development of wimax physical layer building blocks,. 2012
third international conference on intelligent systems modeling and simulation ISMS 2012,Kota
Kinabalu, Malaysia,; 02/2012
I. Galal, M.E.A. Ibrahim, H.E. Ahmed, A. Zekry: Performance evaluation of digital modulation techniques used
in Bluetooth physical/radio layer. Computer Engineering & Systems (ICCES), 2012 Seventh
International Conference on computer engineering and systems; 01/2012
E.M. Mahmoud, T.A. Elgarf, A.A. Elhafez, A.E. Zekry: Implementation and evaluation of variable bit rates
CELP coder. Computer Engineering & Systems (ICCES), 2012 Seventh International Conference on;
01/2012
Hanem M. El-Sheikh, Omayma A. El-Mohsen, Talaat Elgarf, Abdelhalim Zekry: Efficient hard ware
implementation technique for key-dependent s-box defined over GF (2^4) in AES,. 2011 IEEE International
Conference on Information Theory and Information Security, icitis, Hangzhou, China,; 11/2011
Mohamed Salah, Abdelhalim Zekry, Mohamed Kamel: FPGA Design and Implementation of LMS Adaptive
Filter for Noise Cancellation And System Identification,. National Radio Science Conference, NRSC
2011,Cairo, Egypt.; 01/2011
Khaled Sakr, Mohamed Dessouky, Abdelhalim Zekry: Design of Tunable Continuous- Time Quadrature Delta
Sigma Modulators,. , IEEE 6th International Design and Test Workshop IDT, 2011.; 01/2011
Amr Essam, Mohammed Dessouky, Abdelhalim Zekry: Two-Phase Correlated Level Shifting Switched-
Capacitor Techniques. Int Microelectronics (ICM) Conf, pages 17–19,; 12/2010
A. A. Zekry 98- Marwa S. Salem, H. F. Ragai: Design of the Power Conditioning Circuit for Vibration Based
Electrostatic MEMS Energy Converters Found in Energy Scavenging Systems. 2010 International
Conference on MEMS, NANO, and Smart Systems (ICMENS, 2010), Changsha, China; 12/2010
Ahmed Shaker, Abdelhaim Zekry: A modified PSPICE model for the power PIN diode.IEEE 22nd
International Conference on Microelectronics ICM10,Cairo,Egypt.; 12/2010
M.A. El-Dakroury, A. Zekry, R.M. Daoud, H.H. Amer: Traffic Control Using WiMAX with Dual Trigger
Handover. 6th IEEE International Computer Engineering Conference, IEEE ICENCO; 12/2010
M. Ali, H. Elsemary, H. shawkey, A. Zekry: "A fast Locking Digital Phase-Locked Loop using Programmable
Charge Pump",. The Sixth International Conference on Computer Engineering & Systems,
ICCES'2010.; 11/2010
Hafez Fouad, Abdel-Halim Zekry: Diode-Voltage-Booster for 2.4-GHz 130-nm CMOS RF Class-E Power
Amplifier For Mobile Communication Systems. the IEEE-AM Conferences in Malta,; 09/2010

12. M.Abou-elatta, C.Gontrand, A. Zekry: Complementary LDMOSFET in 0.35μm BiCMOS technology-
characterization and modeling”. IEEE Proc. International Symposium on Industrial Electronics (ISIE),
Italy,; 07/2010
M.Abou-elatta, C.Gontrand, A .Zekry: cLDMOS in 0.35μm BiCMOS technology with Deep Trench Isolation
suitable for Smart Power Integration. ”, Proc. JNRDM Montpellier, France,; 06/2010
M.Abou-elatta, C.Gontrand, A. Zekry: “RESURF-nLDMOSFET in 0.35μm BiCMOS technology-
characterization and modeling. IEEE Proc. International conference on Design & Technology of
Integrated Systems (DTIS), Tunisia,; 03/2010
H.S.Kamel, A.Zekry: Modeling of 3 GPP Voice Call Continuity Handoff. the 27th Radio National Science
Conference, Menofia, Egypt,; 03/2010
Hafez Fouad, Abdel-Halim Zekry: Voltage-Mode Class-D 2.4-GHz 130-nm CMOS RF Power Amplifier For
Mobile Communication systems. Menofia University, NRSC, URSI-Egypt,; 03/2010
Hossam E. Ahmed, A. A. Zekry, Adel E.Elhennawy, Ayman M. Hassan: DSP Implementation Aspects for a
Generic Frequency Hopping Transceiver. 27th National Radio Science Conference (NRSC2010),
Monufia University, Egypt,; 03/2010
Enas Elbarbary, Abd El-Halim Zekry, Hussam Elbehiery, Adel El-Hennawy: Portable Blind Assistant. 5th
International Computer Engineering Conference (ICENCO 2009),Cairo University, Egypt,; 12/2009
Gihan Sayah, Abdel Halim A.Zekry: Modeling and Simulation of Gate-Cathode Junction of a Thyristor with
Amplifying Gate and Emitter Shorts. 2nd International Conference on Advanced Computer Theory
and Engineering (ICACTE’09), Cairo, Egypt,; 09/2009
Ahmed Shaker, Abelhalim Zekry, Omar A.Omar, Salah Gamal: An Improved Power Diode Model Based on
Finite Difference Method. the 2nd International Conference on Advanced Computer Theory and
Engineering (ICACTE’09), Cairo, Egypt, Pages 659-670,;09/2009
Hossam E. Ahmed, A. A. Zekry, Adel E.Elhennawy, Ayman M. Hassan: Frequency Hopping Spread
Spectrum Transceiver Implementation Using Floating-Point DSP",. the 2nd International Conference on
Advanced Computer Theory and Engineering (ICACTE’09), Cairo, Egypt,; 09/2009
Hossam Labib A. Zayed, A. A. Zekry, Adel Ezzat Elhennawy, Ayman M. Hassan: Design, Simulation, and
Implementation of Asymmetric Digital Subscriber Line Modem on DSP Kit. The 2nd International
Conference on Advanced Computer Theory and Engineering (ICACTE2009), Cairo, Egypt; 09/2009
M.Abou-elatta, C.Gontrand, A. Zekry: Optimization of Buffered RESURF-LDMOS. Proc. Colloque LIA-LN2,
France, pp. 81-83,; 06/2009
M.Abou-elatta, C.Gontrand, A.Zekry: “Characterization of RESURF-nLDMOS in 0.35μm based BiCMOS
technology”. Proc. JNRDM Lyon, France,; 05/2009
H. Fouad, A.-h. Zekry, K. Fawzy: Self-biased 0.13- µm CMOS 2.4-GHz Class E cascode power amplifier. Radio
Science Conference, 2009. NRSC 2009. National; 04/2009
Ramy A. Fathy, Abdelhalim Zekry: A DSP Based Descrambler for Digital Satellite TV Receiver. Proceedings of
the 26th National Radio Science Conference (NRSC2009); 03/2009

13. A. A. Zekry Marwa S. Salem, H. F. Ragai: “Comparative Study for Electrostatic MEMS Converters”. 26th
Annual National Conference on Radio Science Cairo, Egypt.; 03/2009
A. A. Zekry Marwa S. Salem, H. F. Ragai: Three Different Spice Models for Representing the Behavior of
Electrostatic MEMS Converters”. 26th Annual National Conference on Radio Science Cairo, Egypt.;
03/2009
M.S. Salem, A.A. Zekry, H.F. Ragai: Three different SPICE models for representing the behavior of electrostatic
MEMS converters. Radio Science Conference, 2009. NRSC 2009. National; 01/2009
M.S. Salem, A.A. Zekry, H.F. Ragai: Comparative study for electrostatic MEMS converters. Radio Science
Conference, 2009.NRSC 2009.National; 01/2009
H.L.A. Zayed, A.H.A. Zekry, A.E. Elhennawy, A.M. Hassan: Simulation and DSP implementation of ADSL
modem using C6713 processor. Computer Engineering & Systems, 2009.ICCES 2009. International
Conference on; 01/2009
M.S. Salem, A.A. Zekry, H.F. Ragai: Effect of parallel capacitance in increasing output power of electrostatic
MEMS converters. Microelectronics, 2007.ICM 2007. Internatonal Conference on; 01/2008
Abdelhalim A. Zekry, Mohammed A. Elgendy: Computer aided design of the photovoltaic irrigation systems.
World Conference on Energy for Sustainable Development, Technology Advances & Environmental
Issue, 6-9; 12/2007
Marwa S. Salem, A. A. Zekry Mona S. Salem, H. F. Ragai: Determining the Specifications of Controlling Pulses
for Electronic MEMS Converter. 2006 International Conference on MEMS, NANO and Smart Systems
(ICMENS, 2006), Cairo, Egypt.; 12/2006
Mona S. Salem, A. A. Zekry Marwa S. Salem, H. F. Ragai: “ Performance Enhancement of Gap Closing
Electrostatic MEMS Converters”. 2006 International Conference on MEMS, NANO, and Smart
Systems (ICMENS, 2006), Cairo Egypt.; 12/2006
Mo.S. Salem, A.A. Zekry, H.F. Ragai: Design methodology and power conditioning circuit of vibration based
MEMS converters for wireless sensor networks. Information and Communications Technology, 2005.
Enabling Technologies for the New Knowledge Society: ITI 3rd International Conference on;
01/2006
Marwa S. Salem, A. A. Zekry Mona S. Salem, H. F. Ragai: Power Controller Design for the MEMS Converters.
1st workshop in VLSI technology and EDA tools, Arab Academy for Science and Technology
(AAST), Mentor Graphics, Cairo, Egypt.; 11/2005
G. G. Hamza, A. A. Zekry, H. El-Ghuitani, A. El-Shazly: A full automatic measurement set up for solar cell
modules. First Ain Shams University International Conference on Environmental Engineering,
ASCEE-L, Cairo, Egypt; 04/2005
M. El-Dakroury, A. Halim, AHA Zekry, R.M. Daoud: Base band Transceiver for Wireless Remote Management
System. Computer as a Tool, 2005.EUROCON 2005.The International Conference on; 02/2005
H.E. Ahmed, A.A. Zekry, M.A. El Lithy: Nat spread spectrum transceiver for wireless local area networks. Radio
Science Conference, 2005. NRSC 2005. Proceedings of the Twenty-Second National; 02/2005

14. A.A. Zekry, M.A. Elgendy: Estimated performance of photovoltaicirrigation systems under different operating
conditions. Radio Science Conference, 2004.NRSC 2004. Proceedings of the Twenty-First National;
04/2004
G.T. Sayah, A.H.A. Zekry, H.F. Ragaie, F.A. Soliman: A SPICE model of a thyristor with high injection effects
and conductivity modulation. Microelectronics, 2003.ICM 2003. Proceedings of the 15th International
Conference on; 01/2004
A. Shaker, A.H. Zekry: Theoretical investigation of single- and dual-gate metal insulator tunnel transistors.
Microelectronics, 2003. ICM 2003.Proceedings of the 15th International Conference on; 01/2004
I.M. Hafez, A. Zekry: Microthyristor based sequential circuits and systems. Radio Science Conference, 2003.
NRSC 2003.Proceedings of the Twentieth National; 04/2003
I. M. Hafez, A. Zekry: Micro – thyristor Based Sequential Circuits and Systems “,. Proceedings of the National
Radio Science Conference (NRSC), Cairo,; 03/2003
A.A. Zekry: The evolution of the microelectronic bipolar junction transistor. Electronic Devices, 2002.
(EWAED). The First Egyptian Workshop on Advancements of; 10/2002
A. Shaker, A. Zekry: Theoretical investigation of single- and dual-gate MITT nanometer transistors. Electronic
Devices, 2002.(EWAED). The First Egyptian Workshop on Advancements of; 10/2002
A. Zekry, I.M. Hafez, M. El-Hady: Microthyristor as a microelectronics device. Electronic Devices, 2002.
(EWAED). The First Egyptian Workshop on Advancements of; 10/2002
A. Zekry, I.M. Hafez, M. El-Hady: Design and analysis of a new microthyristor based SRAM cell. Electronic
Devices, 2002.(EWAED). The First Egyptian Workshop on Advancements of; 10/2002
A. Zekry, A. A. Slim: Investigations on Stepped sine wave push-pull inverter. ,12th International Mechanical
Power Engineering Conference IMPEC12, Mansoura, Egypt; 01/2001
A. Zekry: ,”Integrated circuit fabrication technology and economy. workshop on strategic technological
development of electronic industry in Egypt, Cairo, Egypt,; 02/2000
M. Ghoneima, K. Sharaf, H.F. Ragai, A. El-Halim Zekry: Low power units for the Viterbi decoder. Circuits and
Systems, 2000.Proceedings of the 43rd IEEE Midwest Symposium on; 02/2000
A. El Hennawy, A. Zekry, S. Bayomi, S. Saafan: A novel MOSFET FM-detector circuit entirely integrated on a
singlechip. Radio Science Conference, 1998.NRSC '98. Proceedings of the Fifteenth National; 03/1998
A Zekry: ,”Photo – electrodes for water splitting II. International Workshop on photo – electricity ENPH097,
Cairo; 12/1997
A. Zekry H. Bahkali, A. Al-Mazroo: “Design of BICMOS GATES. The fifth International Conference on
Microelectronics, Dhahran, Saudi Arabia; 12/1993
A Zekry: Investigation of different silicon photo – electrochemical cathodes for hydrogen evolution”. Workshop on
photo – electrochemical production of hydrogen, King Saud University.; 11/1993
Zekry, A.A. El-Amoud: A comprehensive study of an optical transceiver. Proceedings of the International
Congress for Statistics, Computer Science and Society Research, Cairo, Egypt; 04/1992

15. Elghitani, A. Zekry, H. Elsayed, Marzouk Ibrahim: Effect of Resistivity of contact materials in GTO thyristors”.
The International Conference on Microelectronics, Cairo, Egypt.; 12/1991
S. . Elewa, M. El-Koosy, A. Zekry, H. Ragai, M.N. Saleh: Electronic Process Modeling in Polysilicon Solar
Cells. International 87 Karlsuhe Conference for Modeling and Simulation,; 07/1987
A. Zekry G.E. Hassan,N. Saleh: A new measuring method for the minority carrier lifetime and p-n product. 9th
conference of solid-state science and applications”,Egypt, Sant Catrin,; 04/1986
A. Zekry, G. El-Dllal: he effect of the Al-Si Schottky contact on the electrical behavior of solar cells. the second
Workshop on photo-voltaic, Alexadria University Research Center,; 01/1985
Technical Reports