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Researchers

Faculty

Dr. Waleed Khalil received his B.S.E.E. and M.S.E.E degrees from the University of Minnesota in 1992 and 1993, respectively, and his Ph.D. degree from Arizona State University in 2008. He is currently serving as an Associate Professor at the ECE department and the ElectroScience Lab, The Ohio State University. He is a founder of CLASS (Circuit Laboratory for Advanced Sensors and Systems) at OSU where he conducts research in digital intensive RF and mm-wave circuits and systems, high performance clocking circuits, GHz A/D and D/A circuits. Prior to joining OSU, Dr. Khalil spent 16 years at Intel Corporation where he held various technical and leadership positions in wireless and wireline communication groups. While at Intel, he was appointed the lead engineer at the advanced wireless communications group, where he played an instrumental role in the development of the industry's first Analog Front-end IC for third generation radios (3G). He established Intel's first analog device modeling methodology for mixed signal circuit design and also contributed to the development of Intel's first RF process technology. He later co-founded a startup group to develop Intel's first RF front-end IC, as a principle leader of the radio transmitter chain. He authored and co-authored 11 issued and several other pending patents, over 50 journal and conference papers and three book/book chapters. Dr. Khalil is a senior member in IEEE and serves in the steering committee for the RFIC Symposium and the technical program committee for the Compound Semiconductor IC Symposium (CSICS).
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Research Scientists

Dr. Brian Dupaix Brian Dupaix received a B.S. in Electrical and Computer Engineering and Korean from Brigham Young University, Provo in 1995, and an MS and PhD in electrical engineering from The Ohio State University, Columbus in 2009 and 2013 respectively.

Prior to joining the Electroscience Laboratory, he spent 5 years at Honeywell Air Transport Systems, where he designed ASICs for flight and navigation computers for commercial aircraft, and 4 years at Intrinsix where he generated IP blocks for extensible processors and System-on-Chip ASICs for consumer electronics. He was also an independent design consultant for 8 years, working on wireless sensor networks, low power RADAR systems, RFID ASICs, and digital control of multi-channel RF systems. He received a Technical Achievement Award in 2001 for his work on a cycle-accurate ASIC implementation of a full-custom microprocessor.
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Shane SmithDr. Dale Shane Smith earned his BS (2005), MS (2011), and PhD (2013) in Electrical and Computer Engineering from The Ohio State University.

Before joining ESL, Shane worked for more than 15 years in the Department of Physics at the Ohio State University designing, producing, and maintaining electronic systems deployed in leading scientific experiments in the U.S. and abroad. As a part of this work, Dr. Smith was involved in a wide range of activities including the design and development of nanometer scale radiation hard mixed signal ASICs, FPGA based data acquisition systems, medical imaging electronics, chemical vapor deposition diamond detectors, and high voltage power supply systems. His publications relating to this research include 11 journal papers and 8 conference papers. His current research interests include radiation hard mixed signal circuits, high reliability integrated circuits, low noise circuits, and high speed and high resolution Analog-to-Digital Converters (ADCs) and Digital-to-Analog Converters (DACs).
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Dr. Eslam Yahya currently he is a visiting professor at The Ohio State University “OSU”, USA, and he is an assistant professor at Benha University, Egypt. Dr. Yahya earned his PhD in micro-nano electronics from INPG, Grenoble, France; his Master and B.Sc. from Benha University, Egypt, in microelectronics and data security. Prior to joining OSU, Dr. Eslam was assistant professor in the Center of Nano Electronics and Devices “CND”, the American University in Cairo & Zewail City of Science and Technology, Egypt; an assistant professor at Nile University, Egypt; Research Scientist in TIMA laboratory, INPG, France. Prior to this, Dr. Yahya was a senior research engineer in French University in Egypt; senior research engineer in the information technology institute “ITI” and Mentor Graphics. Dr. Yahya research interests focus on high-speed digital circuits, resilient low-power secured ICs, Internet of Things IoT, Security and Cryptography, 3D integration, Wireless Sensor Networks WSN, and CAD methods. Dr. Yahya has solid experience in chip fabrication and IC tape-out. He has many academic and industrial research collaboration with STMicroelectronics, Mentor Graphics, Intel, and Semiconductor Research Corporation “SRC”. Dr. Eslam Yahya is an IEEE Senior Member and he has served as an Organizer, Program Chair, a Technical Program Committee member and a regular reviewer for several international conferences and journals.
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Graduate Students

Mo'men Abusareya received his B.Sc. and M.Sc. degrees in electronics and communications engineering from Ain Shams University, Cairo, Egypt in 2010 and 2016, respectively, In 2010 he joined the design team of Silicon Vision LLC, Egypt (Currently part of Synopsys MSIP solution group). He was involved with the development of high speed serial interface circuits, High and low power DC-DC converter solutions and low power wireless transceivers. In 2015 through 2017 Mo’men led a design team on Synopsys MSIP developing Bluetooth LE transceiver IP. His current research interests is radiation hard diamond sensor interfacing.


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Saeed Alzahrani received the B.S degree in electronics and communication engineering from King Abdulaziz University, Jeddah, Saudi Arabia, and the M.S degree in electrical engineering from the University of Colorado, Colorado Springs. Currently, he is pursuing the Ph.D. degree at The Ohio State University at ElectroScience lab. His current research interests include the design of ultra-low power voltage controlled oscillators, mixers, frequency multipliers and dividers.


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Kennedy Caisley is working toward a Ph.D. in Electrical and Computer Engineering at Ohio State University. Prior to joining OSU, he received a B.S. in Electrical Engineering from the University of Idaho in 2019 and interned at Schweitzer Engineering Laboratories designing embedded hardware. In addition to electronics, he enjoys rock climbing and synthesizers.


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Trevor Dean Is from Alpharetta, Georgia. He received his B.S. degree (Magna Cum Laude) in Electrical and Computer Engineering from The Ohio State University in December of 2017. During his undergraduate career, Trevor worked as an intern at Battelle twice, as an intern at ArcelorMittal and as an undergraduate research assistant in the CLASS laboratory. Currently, he is enrolled in the direct to PhD program at The Ohio State University.


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Daron DiSabato received B.S. degrees in Communications and Electrical Engineering from Ohio University, Athens, OH, in 2014. He is currently employed as an electronics engineer with The Design Knowledge Company in Fairborn, OH, where he participates in hardware security research activities with the Air Force Research Laboratory. He is concurrently a student researcher at the ElectroScience Laboratory (ESL) and is pursuing a PhD in Electrical Engineering from The Ohio State University, Columbus, OH. Through his work with the ESL, he has participated in research efforts supporting programs sponsored by the Office of Naval Research, the Air Force Research Laboratory, and the Naval Research Laboratory. His research interests include analog and mixed-signal circuit design techniques for device authentication, hardware metering, 2nd order effects mitigation, high-speed I/O transceivers, and integrated data converters.
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Sam Ellicott is currently working towards his Ph.D. in Electrical and Computer Engineering at Ohio State University. He received his B.S. (Summa Cum Laude) in Electrical Engineering from Cedarville University in 2019. Prior to joining OSU he interned at the Air Force Institute of Technology (AFIT), Automation and Navigation Technology (ANT) center. His current research interests are RF circuit design, hardware obfuscation, and hardware security.


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Gus Fragasse started his collegiate career at the Ohio State University in 2012 as an Electrical and Computer Engineering undergraduate student. During his undergraduate career, Gus spent several summers interning at Texas Instruments, and also pursued research interests with the Intelligent Transportation Systems Laboratory and with the Information Electronics group. He is currently working towards his M.S. In Electrical Engineering. His thesis is on the design of a high-speed SRAM in 130nm BiCMOS (SiGe) technology.

 


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Michael Kines is currently working towards his Ph.D. in Electrical and Computer Engineering at Ohio State University. He received his B.S. (Summa Cum Laude) and M.S. in Electrical Engineering from The University of Michigan in 2013 and 2015, respectively. Prior to joining OSU, he worked as a Responsible Engineering Authority (REA) on Analog/RF front-ends for missile guidance systems at Raytheon Missile Systems. He is also the recipient of the Distinguished University Fellowship.

 


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Ramy Tantawy is currently working towards his Ph.D. in Electrical and Computer Engineering at The Ohio State University. He received his B.S. and M.E. (with distinction) degrees in electrical Engineering from Northern Arizona University in 2001 and 2003, respectively.

Prior to joining OSU, Mr. Tantawy spent over 10 years in CMOS mixed-signal circuit design mostly in monolithic CMOS and ROIC imaging applications. From 2002 to 2003, he worked at Intel Corporation, Analog Design Center, in Chandler, AZ, evaluating and developing power management techniques for mobile applications. In 2004, Mr. Tantawy joined Micron Technology, Imagining Center (Now known as Aptina Imaging Corporation), in Pasadena, CA, where he worked for 3 years on the design and development of several CMOS image sensor products for the cellular phone market in the Mobile Image Sensor Group. From 2007 to 2014, Mr. Tantawy worked at Forza Silicon Corporation, in Pasadena, CA, where he participated in various technical, business development and leadership roles to design and develop high-performance CMOS image sensors and ROICs for cinematography, medical, automotive, and defense camera system applications. He authored and co-authored 5 patents, and 4 conference papers.
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Chris Taylor is currently working towards his Ph.D. in Electrical and Computer Engineering at The Ohio State University. He received his B.S. (Summa Cum Laude) and M.S. in Electrical Engineering from Wright State University in 2012 and 2014, respectively. Prior to joining OSU he spent 2 years as an electronics research engineer at the Air Force Research Labs Sensors Directorate. His current research interests includes, hardware security, hardware obfuscation and asynchronous design.

 


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Visiting Scholars

Undergraduate Students

Alumni

Matthew Belz (Ph.D. Student at University of Michigan) is an undergraduate from Columbus Ohio majoring in Electrical and Computer Engineering. He joined CLASS in 2016 and is pursuing his BSECE with Honors Research Distinction. Matt interned in the RF department at Harris Corporation during the summer of 2017 and worked on jamming resistant radio systems. His current research is focused on mm-Wave VCO modeling and design for RF integrated circuits. In the fall of 2019 he will be starting as a PhD student with Dr. Michael Flynn at the University of Michigan
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Tim Heaton is currently a masters student working on high speed digital design.

 


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Tyler Heaton is a masters student working on trusted hardware IP infrastructure.

 


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S M Shahriar Rashid (Skyworks) is a PhD student of the department of Electrical and Computer Engineering of Ohio State University. He completed his Bachelor and Master's Degrees both from the department of Electrical and Electronic Engineering of Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh in 2009 and 2011 respectively. He is awarded University Fellowship for the year 2012-2013. Previously, he was involved in designing the receiver front end of a high speed intra-chip wireless interconnect system with on-chip integrated antenna. He is currently involved in the design of high power PWM transmitters using GaN technology. Mr. Rashid's research interests include RF, Analog and Mixed Signal Integrated Circuits and Systems. He was the recipient of The Ohio State University Fellowship in 2012/2013.
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Brandon Mathieu (AFRL) is from Bloomingdale, Ohio. He received his B.S. in Computer Engineering (Magna Cum Laude, 2014), M.S. in Electrical Engineering (2015) and is currently working towards his Ph.D in Electrical Engineering all at The Ohio State University. He completed internships at Caterpillar, Chrysler and Advanced Integration LLC during his undergraduate studies. His research interests include mixed signal design, reconfigurable circuits/systems and direct digital synthesis. He received a DAGSI/AFRL fellowship in 2014 & 2015.

 


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Ahmed Naguib (Military Technical College) received his B.Sc. degree and the M.Sc with honors in electrical engineering from the Military Technical College (MTC), Cairo, Egypt in 2006 and 2013, respectively. Previously, he was involved in designing low power and low noise circuits for biomedical implantable devices. He is currently working towards his Ph.D in Electrical Engineering at The Ohio State University. His interests include the design of analog, high-speed mixed signal, and RF circuits. His research involves the design and calibration of high speed Digital to Analog Converters (DACs).

 


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Matthew LaRue (Northrup Grumman) was born and raised in Convoy, OH. In 2012 he graduated magna cum laude from Valparaiso University with a bachelor's degree in electrical engineering. While at Valparaiso University, he served as president of the Tau Beta Pi engineering honor society and conducted research on Quantum-dot Cellular Automata. He is now enrolled in the direct PhD program at The Ohio State University. He is the recipient of the Tau Beta Pi Fellowship, NASA Space Technology Research Fellowship, and a University Fellowship.


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Moataz Abdelfattah (Qualcomm) was born in 1986. He received the B.Sc, and the M.Sc. in electrical engineering from Cairo University, Egypt in 2008, and the American University in Cairo, Egypt, in 2012, respectively. From 2010 to 2012, he was with Intel Corporation, Oregon, U.S. He worked on circuit design for Digital Phase Locked Loops. His research focus is on power management for Near and Sub Threshold circuit design
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Sidharth Balasubramanian (Texas Instruments) received his B.E. degree in Electronics and Communication Engineering from the College of Engineering, Guindy, (CEG) Anna University, India in 2008. He earned his M.S. and Ph.D. degrees in electrical and computer engineering from The Ohio State University (OSU) in 2009 and 2013, respectively.

He was a member of the on-board electronics team of India's first student-built Microsatellite, ANUSAT, from 2005 to 2008, focusing on the design and integration of RF subsystems at the VHF and UHF range and the on-board computer that were eventually deployed in space in 2009. From 2008 to 2010, he was affiliated with OSU's Analog VLSI Lab, working on low-power circuits for medical SoCs. He spent the fall of 2010 at Xtendwave, a Dallas-based startup, to develop a backward-compatible modulation scheme for WWVB systems, which replaced the legacy scheme in 2012, and is currently the modulation format for broadcasting time in the United States of America. He co-invented a low-power mixed-signal receiver that together with the proposed modulation scheme enables over an order of magnitude in improvement in WWVB reception. From 2009 to 2013, he has been with the ElectroScience Laboratory Complex at OSU, developing theory and circuits for high-speed data conversion, beamforming circuits, mm-wave LC VCOs, etc. Since September 2013, he has been with the high-speed products group at Texas Instruments, Dallas and participates in the product development for high-speed RF data converters. He has authored and co-authored several peer-reviewed publications and a book chapter on advances in digital-to-analog converters.

Dr. Balasubramanian was the recipient of The Ohio State University Fellowship in 2008, Bronze Prize at the 2010 TSMC Outstanding Student Research Award, the 2011 Solid-State Circuits Society Travel Grant Award, the National Science Foundation/MIPR Fellowship in 2011, and the Outstanding Journal Article of ElectroScience Lab award in 2012. He was a two-time nominee for OSU's Presidential Fellowship. He was a co-recipient of the Best Paper Award at the 2013 Wireless Innovation Forum and a student paper contest finalist at the IEEE MWSCAS 2013. He is listed in the Who's Who in America 2015. He is a member of Eta Kappa Nu (HKN), the honor society of the IEEE. He currently serves as the vice-chair of the IEEE Circuits and Systems Society - Dallas Chapter and on the steering and technical program committees of the IEEE Dallas Circuits and Systems Conference, and the Texas Wireless and Microwave Symposiums.
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Matthew Casto (AFRL) received his BS and MS degree in Electrical Engineering in 2003 and 2005 respectively from Wright State University in Dayton, OH. He recieved his PhD from Ohio State University in 2017. He is a member of the IEEE and has authored or co-authored more than 10 publications in the areas of non-linear and electro-thermal device modelling, advanced mixed-signal characterization, and solid state power amplifier design. Dr. Casto is a Branch Chief at the Air Force Research Laboratory's Sensors Directorate and is working on trustworthy, reliable mixed-signal integrated circuits.

 


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Justin Dennison (APL) was born and raised in Columbus, Ohio. He received his B.Sc in Electrical and Computer Engineering from the Ohio State University in 2014. Justin is currently working on his Master's Thesis under Prof. Khalil and officially joined C.L.A.S.S group as a GRA in Summer 2015. He has previously worked as a Graduate Teaching Assistant (GTA) in the Engineering Education Innovation Center (EEIC) teaching Fundamental of Engineering Courses at OSU. His research interests include RFICs, wireless communications, mixed signal design, and audio processing.
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Luke Duncan (The Design Knowledge Company) earned his B.S. (2009), M.S. (2012), and Ph.D. (2016) degrees in Electrical and Computer Engineering from the Ohio State University. His interests include the design of analog, mixed-signal, and RF circuits. During his M.S. studies, Luke was funded by a Texas Instruments fellowship and completed 12 months of internship experience that included integrated circuit design involving high speed FET switches and a USB3.0/PCIe/SATAIII redriver. His M.S. thesis covers the design of fast-transient low-dropout regulators.
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Salma El-Abd (Intel) earned her B.Sc. degree with honours in Electronics and Communication Engineering from the Faculty of Engineering, Ain-Shams University, Cairo, Egypt. She is currently working towards her Ph.D. at The Ohio State University. She was the recipient of The Ohio State University Fellowship in 2010/2011. Her research interests include the design of voltage controlled oscillators and dividers running at the mm-wave frequencies, PLLs, RF PWM modulators, RF power amplifiers, switched DC/DC voltage regulators and current references.


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Jamin McCue (Northrop Grumman) was born in Clarksburg, West Virginia, in 1987. He received his B.S. degree in Electrical Engineering from Cedarville University in 2009 and subsequently joined the Ohio State University where he earned his Ph.D. His research interests include integrated RF transceivers, high speed mixed signal design, and high speed I/O circuits. Jamin received a fellowship from the AFRL in 2010 and continues to work in association with the AFRL Sensors Directorate.


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Qiyang Wu (Apple) received his M.S. and Ph.D. degrees in Electrical and Computer Engineering from the Ohio State University in 2011 and 2013, respectively. Since 2013, he has been working as an RF engineer at Apple Inc. Prior to that, Dr. Wu was working on mm-wave transceiver and component design. His research interests are in the high-speed digital I/O and RF front-end design for wireless communications. Dr. Wu was the recipient of The Ohio State University Fellowship in 2008 and the NSF/MIPR Fellowship in 2011.


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Samantha Yoder (AFRL) received the BS, MS, and PhD degree in electrical engineering from The Ohio State University. She received the SRC Fellowship in 2008, DAGSI fellowship in 2010, and the four-year SMART fellowship in 2011. Her research interests include high-speed digital-to-analog converters, time-based analog-to-digital converters, and delta-sigma modulators. She interned with the Air Force Research Laboratory, Dayton Ohio in the summers of 2011 and 2012.
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