Mohan Krishnan Gopal has extensive experience in electrical engineering, semiconductor devices, integrated circuits, optoelectronics, and spacecraft technology. He holds a PhD in electrical engineering from the University of Arizona with a focus on silicon-germanium quantum well MOSFETs. Some of his accomplishments include designing an optical slip ring, managing the design of a satellite launched by India, and establishing an EMI testing facility. Currently he is interested in silicon/silicon-germanium devices, integrated circuits, solar cells, and technical project management.

1. Mohan Krishnan Gopal
mohan.k.gopal@gmail.com
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[1] Highlights
• Experienced Engineer with a PhD (Major: Electrical Eng - Semiconductor,
Minor: Optical science & Microwaves)
• Employability: Permanent resident in USA
• Knowledge and experience of Silicon-Germanium strained QW devices,
Analog/Mixed-signal/RF IC, Optical Science, Microwaves
• Proven ability to develop and implement new devices/systems and to manage
complex projects
• Very good knowledge of Electrical Power, High voltage and Machinery
[2] Unique Achievements
• Strained SiGe Mosfet: Published text book
• Optical_Slip_Ring: Novel 8 channel slip-ring for high EMI environments
• EMI test facility: First full-fledged facility in India, including the design of a
shielded chamber
• Satellite design: First satellite fully designed in India and launched onboard an
indigenous launch vehicle
• Current Sheet Applicator: Unique microwave radiator for phased array
oncology
Keywords: Silicon-Germanium, Si/SiGe QW, Opto-electronic IC, Microwave IC, a-Si/a-
SiC MQW High efficiency Solar Cells, Electro-magnetic Interference (EMI/EMC),
Spacecraft technology
[3] Objective
Design Simulation, Testing and management of:
(1) Silicon/Silicon-Germanium hetero-junction and multi-quantum well devices for
Microwave, Optical and Laser applications
(2) Electro-Optic & Opto-Electronic devices and Integrated Circuits
(3) VDMOS & IGBT
(4) MQW high efficiency Solar Cells and technology
(5) Analog, Mixed and Microwave IC
(6) Spacecraft Technology
(7) Technical Management of Projects involving above devices/systems
[4] Accomplishments
• Supervised the design and fabrication of an 8-channel Optical_Slip_Ring to
interface between a control computer and a rotating oven used for casting large
astronomical telescope mirrors
• Designed, prototyped and tested an 8 channel dynamically offset corrected Data
Acquisition System for an Infrared imaging array for Magellan space telescope
• Managed and supervised, as Project Engineer, the design, integration, testing
and launching of a satellite. From this assignment I have very good knowledge
of: diverse electronic systems, EMI/EMC, theory and practical aspects of Solar
Cells and Solar Panels, space-craft related thermal and mechanical engineering
aspects.
• Managed the design and fabrication of a mid-size EMI shielded chamber and
established a full-fledged EMI test facility in the range of 10 MHz to 10 GHz. This

2. was the first one of its kind in India and was widely used for EMI testing of
Satellite sub-systems and Satellites
• Designed, fabricated and tested a 0.5 degree accurate, low cost, solar cell based
Attitude Measurement System for a gamma ray balloon experiment
• Managed, designed, fabricated, tested and implemented Current Sheet
Applicator (CSA) for clinical use. It was a novel, dedicated, first of its kind, small
size RF radiator for Phased Array Hyperthermic Oncology
• Managed the design and testing of an automated Permeability vs Temperature
measurement system, along with a 0.1 degree accurate temperature controller,
for a Ferro-seed characterization system. Implantable Ferromagnetic-seeds are
used for clinical Hyperthermic Oncology.
[5] Education
University of Arizona, Tucson, Arizona December 2008
PhD in Electrical Engineering (Dissertation: Si/SiGe QW mosfet)
(Major: Semiconductor Devices and IC, Minor: Optical Science and Microwaves)
University of New Hampshire, Durham, New Hampshire September 1986
MS in Electrical Engineering (Electronics and Biomedical)
Indian Institute of Technology, Tamilnadu, India
M.Tech (Masters) in Electrical Engineering (Semiconductors, Electronics, Microwave)
University of Kerala, Kerala, India
B.Tech (Bachelors) in Electrical Engineering (Power, Machinery, High voltage)
[6] Graduate Level Courses
Analog Integrated Circuit (IC), Solid State Devices, Physical Electronics (Quantum-
Semiconductor), IC-Packaging, Microwave Theory & Design - passive, Optical Fibers,
Optical Interferometry, Optoelectronics, Fiber Optics Laboratory, Plasma Engineering,
[7] Graduate level term projects
• Plasma etching of Silicon Integrated Circuits – project paper
• Instrumentation system IC with three very diverse sensor inputs, multiplexer and
Op-Amp – group design project
• Instrumentation Amplifier with Op-Amp – group design project
• Hybrid analog circuit layout – project paper
• 8 channel Fiber-optic Multiplexer – project paper
• Microwave Filter IC design, processing and testing – term project
[8] Experience
• Three years experience in the design and simulation of Analog/Mixed-signal ICs.
Performance metrics extraction of a 15 bit 100 MHz Pipeline ADC using Matlab
and Simulink. Preliminary design of this ADC. Design evaluation of a 14 bit 100
KSPS Delta-Sigma DAC
• Three years experience in the design of dynamically offset corrected amplifier
arrays, Data Interface units and Electro-Optic sensors/systems
• In depth knowledge and experience of Si/SiGe hetero-junction devices
• Good knowledge and design experience of CMOS device and IC.
• Knowledge and experience of Digital, Analog and Microwave Signal Processing
• PECVD growth and measurements of amorphous Si/SiC Multi-Quantum Well
• Strong background in modern Optical Science and experience with optical fiber
measurements
• [RF Radiator]: Designed, fabricated, tested and implemented a novel small size
RF radiator suitable for phased array RF Hyperthermic Oncology. It was the
smallest and first dedicated radiator for phased array hyperthermia. The design
was duplicated at two other clinics and is being used in clinics in Europe. The

3. radiator (CSA) is referred in many international hyperthermia research papers,
http://tinyurl.com/k3fazqc (IEEE-MTT)
• [Project Engineer for Satellite]: Managed the design, integration, testing and
launch operations. Satellite was successfully launched from India onboard an
indigenous launch vehicle
• [EMI test facility]: Five years experience with EMI/EMC including in depth
literature research. Designed and fabricated a medium size EMI shielded
chamber. Established a full fledged EMI/EMC test facility in the range of 10 MHz
to 10 GHz based on MIL-Std specifications. It was the first of its kind in India.
This experience and knowledge were used in the satellite design and for solving
EMI problems of satellites
• Experience with Spice, Silvaco, Agilent ADS, ISE-TCAD, Matlab, Simulink, TCL,
C, Basic, Assembler, EXCEL, UNIX, MS windows XP, interfacing of PC for
instrumentation and control, Experience with PDKs from TAPO, IBM, American
Semiconductor
• 8 years employment with RF radiator design, circuit design and opto-electronic
design. 8 years full time employment with Indian Space Research Org
[9] Employment and professional projects
Literature research, SiGe QW, Opto-Electric IC , VDMOS, IGBT, 06/2014 to Present
Internet Consulting, Tucson, Arizona 04/2011 to 04/2014
Semiconductor Devices – research and tutoring, Web page design, Advertisement
banner design, Internet business, remote instrumentation design using a microcontroller
and a wireless datalink, EMI/EMC consultation.
University of Arizona, Tucson, Arizona 02/2010 to 02/2011
Survey technical paper on VDMOS and IGBT, for IEEE Spectrum
Paper on Silicon-Germanium based on my PhD dissertation, for IEEE Spectrum
VDM Verlag, Germany 04/2009 to 12/2009
Text Book: Analytical design and numerical verification of strained Si/SiGe QW mosfet
University of Arizona, Tucson, Arizona 05/2008 to 12/2008
Completion and submission of doctoral dissertation
Ridgetop Group Inc., Tucson, Arizona 02/2006 to 05/2008
Senior Design Engineer, Engineering Intern and Contract project
Design and Simulation of Analog/Mixed IC, Analog-Digital-Converter, DAC
[10] Publications and Presentations
Published text book on strained Silicon-Germanium Mosfet,
Fourteen Publications and Presentations in the fields of Microwave, RF radiators for
Phased Array Hyperthermic Oncology, Bio-medical engineering, Satellite Integration
[11] Professional Skills
Si/SiGe hetero-junction/MQW Devices, Opto-electronics, Electro-optics, a-Si/a-SiC
MQW, Analog/Mixed-signal/RF IC, CMOS, VDMOS, IGBT, High Efficiency MQW Solar
Cell Technology, Discrete Analog/Mixed-signal IC Design, EMI/EMC, Electrical Power,
High voltage, Electrical Machinery, Satellite System Integration, Technical Project
Management
[12] Professional Life story
After completion of Masters Degree in Electrical Engineering in India I joined Indian
Space Research Org. (ISRO) as satellite system integration engineer. I participated
actively in the integration and testing of two satellites and managed the set up of a full
fledged EMI/EMC test facility. Later I performed successfully as a Project Engineer of a
satellite. This assignment involved satellite design, system integration, testing and
launch co-ordination.
After the successful launch of the satellite I came to the United States and joined

4. Electrical Engineering department of University of New Hampshire for a second Masters
degree. There I completed MS degree in Electrical Engineering with a Bio-medical
engineering project. This project was awarded continuation funding. But my desire to
change major into semiconductor devices and Integrated circuit prompted me to leave
the university.
Afterwards I joined the Electrical Engineering department of the University of Arizona for
my PhD. Realizing that the university has an elite Optical Science department I opted
Optical Science as my minor. Opto-electronic Integrated Circuit (OP- IC) was just
evolving with companies like AT&T (Lucent now) and was at its infancy. Pursuit of a
novel dissertation in Opto-Electronic IC was very much enticing to me. With a lot of effort
I managed to arrange a forced meeting between two Electrical Engineering professors
and two Optical Science professors. The former did not show interest in the latter and
the latter did not show interest in the former, at that time. To my great disappointment
my plans to pursue an innovative Opto-electronic IC research did not materialize.
Another research field of interest to me was System_on_a_Chip (SOC). I started
working with a professor in IC Packaging. Soon he left the university and I was again left
with broken struggles.
Then I started working with an Electrical Engineering professor interested in Opto-
electric optical modulator using exciton shift. We chose amorphous Silicon/Silicon-
carbide multi quantum wells (MQW) for the modulator. With a borrowed PECVD (plasma
enhanced chemical vapor deposition) facility and non-ideal measurement facilities it took
over two years to grow device quality MQW (multi-quantum wells). Soon the project was
abandoned since we could not find exciton levels in these MQW. But from this research I
studied extensively high efficiency Tandem solar cells using amorphous MQWs of
silicon/silicon-carbide
I was always looking for a novel project with full of challenges. Eventually I took up a
project with the Design and Simulation of strained Silicon-Germanium QW mosfet. This
led to the Hetero-junction high mobility p-mosfet using Silicon/Silicon-Germanium
junctions and strained SiGe QW.
Obviously my PhD dissertation took over six years due to all the above factors and the
desire for novelty and challenge. I completed my PhD degree in Electrical Engineering
with a major in Electrical Engineering and a joint minor in Optical Science and
Microwaves. The PhD dissertation was the ‘Design and Simulation of Strained
Silicon/Silicon-Germanium Hetero Junction MOSFET’.