AMITH HULIKAL NARAYAN

16 Observation Ct, Apt 201

Germantown, MD 20876

Phone: +1-(240)-360-3458

Email: [email protected]

EDUCATION Ph.D in Electrical Engineering, Expected - May 2020

University of Maryland, College Park, MD GPA: 3.3

B.E. in Telecommunications, June 2011

R.V. College of Engineering, Bangalore, Karnataka, India GPA: 8.3

RESEARCH

EXPERIENCE

Design, Modelling & Development of High Eﬃciency Megawatt Class Con-

stant Impedance Tunable Power Extraction Circuits for Mobile Ionospheric

Heaters

1. Designed a tunable power extraction circuit (pi-circuit consisting of capacitors and

inductors connected in pi-shape) for a 70kV-30A Grid-less Tetrode (novel RF source)

used in Mobile Ionospheric Heaters at RF frequencies (3-10 MHz) (PSPICE).

2. Challenges in building high eﬃciency circuit are to ensure maximum power deliv-

ery to load(antenna) and minimum dissipation in circuit elements. Modelled inductor

parasitic eﬀects like proximity eﬀect and self-resonance to reduce the winding losses

(Ansys MAXWELL, HFSS).

3. Proposed and designed a novel high eﬃciency inductor to ensure 99% power is de-

livered to the load.

4. Tested and veriﬁed the design concept for 90% eﬃciency (Network Analyzer).

Experiments on the Electron Gun

1. To demonstrate the principle, experiment is carried out on a relatively low power gun

(35kV-3A). The pi-circuit is connected across the gap for power extraction (Thermionic

Gun, Ion Pump, High Voltage Transformers, Photo-detectors, IGBTs, Bulk

Capacitors).

2. All the modules mentioned below (power supply, grid bias voltage system) are ap-

propriately integrated to make the gun operational. Gun bring up to obtain expected

current levels (around 3A beam current).

Design & Development of High Voltage Power Supply, Grid Bias Voltage

System & Solenoid for Beam Conﬁnement

1. A high voltage power supply (0 - 3.5kV) was built to act as an input source to a

step-up transformer that generates a 35kV output for the gun.

2. To ensure pulsed beam output from the thermionic emitter, a grid bias voltage

circuitry was built using pulse generators, photo-detectors and a DC source.

3. Built a solenoid used for beam conﬁnement on the electron gun (50 mTesla at the

centre).

RELEVANT

SKILLS

Design Tools: Ansys MAXWELL, HFSS, PSpice, MATLAB, LabVIEW, Modelsim.

Lab Equipments: Network & impedance Analyzers, oscilloscopes, multimeters &

delay generators.

Devices: Thermionic Gun, ion pump, high voltage transformers, photo-detectors,

IGBTs, bulky capacitors.

Languages: C, Linux, Verilog, VHDL, C++, ASM, Python Scripting.

RELEVANT

COURSEWORK

US Particle Accelerator School & UCSD: RF-Cavity, Component & System for

Accelerators.

University of Maryland: Electromagnetic Theory, Solar Energy Conversion, Quan-

tum Technology & Computing.

RV College of Engineering: Microwave Engineering, Analog & Digital Microelec-

tronics, Analog & Digital Communications, VLSI for Telecommunication Systems.

CERTIFICATION

COURSES

Magnetics, RF Design Theory and Principles, Transmission Line Theory, RF System

Design of Transceivers, RF Power Ampliﬁer Design, and LNA Design.

WORK

EXPERIENCE

Design Engineer 1 Advanced Micro Devices (AMD)

June 2012 - July 2014 Bangalore, India

1.Diagnosed RTL design issues on microprocessor core through stall, mismatch and

assertion debugs. Suggested appropriate design and veriﬁcation ﬁxes on both server

and low power microprocessors (Verilog, C++, Verdi).

2. Improved both functional and code coverage for feature and instruction veriﬁcation

on our low power microprocessor used in upcoming Sony (PS4), Microsoft (Xbox) and

Nintendo gaming consoles (C++).

Project Engineer Wipro Technologies (VLSI Division)

June 2011 - May 2012 Bangalore, India

1. Implemented and conducted wafer level tests of a 32-bit micro-controller based

on ARM Cortex-M4 processor used in industrial applications and diagnosed pattern

generation problems on J750 tester (Visual Basic for J750 testing). Developed

test program for measuring mixed signal parameters for Analog-to-Digital Converter

(ADC) (C, Visual Basic).

TEACHING

EXPERIENCE

Graduate Teaching Assistant University of Maryland

August 2019 - Present College Park, Maryland

1. Teach two discussion sessions a week on Electromagnetic Wave Propagation - 2.

2. Hold oﬃce hours for student concerns & grade assignments.

CONFERENCE

& JOURNAL

PUBLICATIONS

1. Constant Impedance Tunable IOT Power Extraction Circuit, A.H. Narayan, B.L

Beaudoin, C Turner, N Goyal, G.S Nusinovich, T.M Antonsen Jr, 2016 IEEE Interna-

tional Vacuum Electronics Conference.

2. Simulations & Experiments of Constant Impedance Tunable Power Extraction Cir-

cuits for Mobile Ionospheric Heating, A.H Narayan, B.L Beaudoin, A Ting, G.S

Nusinovich, T.M Antonsen Jr, 2018 International Conference on Plasma Sciences.

3. Novel High Power Sources for the Physics of Ionospheric Modiﬁcation, B.L Beaudoin,

T Koeth, G.S Nusinovich, A.H Narayan, T.M Antonsen Jr, 2015 IEEE International

Particle Accelerator Conference.

4. Experimental Studies on Radio Frequency Sources for Ionospheric Heaters, B.L

Beaudoin, A Ting, S Gold, A.H Narayan, R Fischer, J.A Karakkad, G.S Nusinovich,

T.M Antonsen Jr, Physics of Plasmas V-25 I-10 P-103116, 2018.

5. High eﬃciency inductive output tubes with intense annular electron beams, J.A

Karakkad, D Matthew, R Ray, B.L Beaudoin, A.H Narayan, G.S Nusinovich, A

Ting, T.M Antonsen Jr, Physics of Plasmas V-24 I-10 P-103116, 2017.

6. Physics of Eﬃcient Gridless Tetrodes with Intense Electron Beams, J.A Karakkad,

G.S Nusinovich, B.L Beaudoin, A Ting, A.H Narayan & T.M Antonsen Jr, Physics

of Plasmas,V-26 I-9 P-093101, 2019.

7. Highly eﬃcient, megawatt-class, radio frequency source for mobile ionospheric

heaters, B.L Beaudoin, A Ting, S Gold, A.H. Narayan, J.A Karakkad & T.M. An-

tonsen Jr.

AWARDS &

GRANTS

Finalist, Best Student Paper: International Conference on Plasma Physics - 2018

Student Travel Grant: International Conference on Plasma Physics - 2018.

Finalist, Best Student Paper: International Vaccum Electronics Conference - 2016.

Best Student Paper Award: Graduate Student Government, UMD - April 2016

ONLINE

COURSES

University of Pennsylvania (Coursera Online-In progress): Introduction to

Intellectual Property, Copyright Law, Trademark Law, Patent Law.

LEADERSHIP

EXPERIENCE

Fest Organizer CONNECT - 2011

January - March 2011 RV College of Engineering

Oversaw publicity, ﬁnance and volunteer management. Budgeted the event expense,

pitched to the potential sponsors, coordinated publicity events. Approved the individ-

ual event spends & resolved inter-departmental bottlenecks.