Naga Devarapalli

Background

About Naga Devarapalli

Strong foundation in the radiation, coupling, propagation and focusing of electromagnetic waves, microwave transmission lines and networks, impedance matching, Smith charts and scattering parameters Satcom/EMC Certification (RTCA/Viasat/Iridium/ETSI/FCC): RF link budget analysis Test planning, execution and results reporting for RF Communication Systems Verification Develop Satcom/Emissions/Susceptibility test methods and calibration techniques Measurement uncertainty estimation Perform root cause analysis for physical layer/EMC failures and redesign test setups to minimize effects of support equipment on expected EUT functionality Antenna Engineering: Applying microwave network analysis, computational electromagnetics and optimization algorithms for analysis, design and verification of high-power antennas Spiral antenna modeling using lossy transmission lines for Radar Rectenna array feed network topologies for ambient RF power harvesting Spectroscopy: Design and test two-port instrumentation to measure complex permittivity Develop and test measurement and calibration techniques using S-parameter analysis of various networks with capacitance cells for dielectric spectroscopy using a vector network analyzer and an impedance analyzer Designed, developed and tested a millimeter-wave tracking interferometer (a horn antenna, two cylindrical lenses, and a heterodyne interferometer circuit) to measure line-averaged plasma density An interferometer diagnostic to determine the characteristics of the plasma produced by a shock wave mimicking the one produced by a reentry vehicle Electromagnetic Metamaterials: Designed and conducted an experiment to verify bandwidth enhancement in fractals-based metamaterials Engineering Electromagnetics Laboratories: Design and setup of experiments, budget and appraise possible technical specifications, procure hardware and software, oversee installation of equipment, train and supervise laboratory staff Computer-Aided Design & Simulation: Python, MATLAB, TILE, HFSS RF & Microwave Engineering Testing: Anechoic and Reverberation Chambers, Spectrum and Network Analyzers, Signal Generators, Oscilloscopes, Power Meters, E-field and Current Probes, Antennas and Matching Networks Documentation: GitHub, Overleaf, Atlassian Courses Taught: Electric Circuits, Signals & Systems, Digital Electronics, Analog Electronics, Network Analysis & Synthesis, Control Systems, Electromagnetic Fields & Waves, Microwave Components & Circuits, Antennas & Propagation, Analog Communication