Design Engineer

KIRTHIKA NAHALINGAM

****, ********* ****, *** ***,

Mobile: 619-***-****

San Diego, CA - 92115.

Email: **********.********@*****.***

SUMMARY

. 2 years of experience in the field of Microwave devices, RF and

Antenna Design, UWB Impulse Radar systems.

. Experience in various simulation softwares like Ansoft Designer,

Ansoft HFSS, ADS, COMSOL Multiphysics (RF Module and AC/DC Module),

OrCAD, FEKO softwares.

. Knowledge on Electromagnetic Field (EMF), Electromagnetic Interference

(EMI) and Radio Frequency Interference (RFI).

. Experience in calibration and measurement using the Anritsu Vector

Network Analyzer (37269D) for the antenna characteristics like

scattering parameters, and group delay, etc.

. Experience in performing Near-field and Far-field antenna measurements

with Anechoic Chamber.

. Experience in hand fabrication of antennas and fabricating various

antennas using a milling machine.

. Experience with most of the lab equipments like the Oscilloscope, Wave

Generators, Multimeter, Bioimpedance Analyzer and UWB Radar Evaluation

kit.

SPECIALIZATIONS/TECHINCAL SKILLS

Simulation Software: COMSOL Multiphysics, Ansoft HFSS, Ansoft

Designer, AWR, Cadence OrCAD, LINC2, MATLAB.

RF Specialization: Anechoic Chamber, Spherical, planar, Vector Network

Analyzer, Oscilloscope, UWB Impulse Radar Evaluation

kit.

Medical Applications: Bioimpedance Analyzers.

Office Applications: MS Windows, MS Office (Excel, PPT, Word), UNIX,

AS/400,

Languages: C, C++

EDUCATION

San Diego State University, San Diego, California, USA

Masters of Science (M.S.), Electrical Engineering (GPA: 3.2/4.0)

May 11

Anna University, Chennai, India

Bachelor of Engineering (B. E.), Electronics & Communication Engineering

(GPA: 3.6/4.0) May 06

WORK EXPERIENCE

Internship: PhiloMetron Inc., San Diego, CA

BioEngineer/ RF Intern

Mar 11 - Till Date

. Work under the direct supervision of the Vice President of the company

in a Research and Development team for design, analysis and validation

of the models in COMSOL Multiphysics.

. Work on the analysis of antenna design for specific target detection on

human body by sending Gaussian pulses for interaction with tissue.

. Work involves design of tissue models and blood vessels with electrodes

for analyzing energy interaction with tissues.

. Experience in analyzing the electric field, current and voltage across

blood vessels and verifying the same with bench experiments.

. Experience in performing test bed experiments using UWB evaluation kit

for analyzing the reflected pulses from tissues and skin with various

electrical properties.

. Good experience in writing MATLAB codes for FFT and IFFT for time and

frequency domain analysis of signals.

. Preparing procedures and documenting results based on the analysis and

verification with the computer designs.

. Developed solid understanding of tissue dielectric properties, use of

differentiated and monocycle Gaussian pulses in locating the target

inside human tissue.

Antenna and Microwave Laboratory, San Diego State University, San Diego, CA

Research Assistant

May 10 - Mar 11

. Work involved design of Spiral Inductor in Ansoft HFSS and AWR for

verifying the Q factor, on a project funded by AWR Corp.

. Also designed and implemented an antenna inside various armor layers to

obtain the desirable antenna characteristics such as radiation patterns

and return loss, on a project funded by NextGen Aeronautics.

. Mentored an undergraduate student to aid in the research work conducted

on Breast Cancer Detection using UWB and Wideband Antennas.

. Mentored undergraduate students of Microwave Devices and Systems Lab in

design (Ansoft Designer), fabrication and measurement of microwave

filters, couplers, resonators, power dividers etc.

IBM India Pvt. Ltd., Bangalore, India.

Systems Engineer

Feb 09 - May 10

. Work involved design and development of analog and digital circuits.

. Provided technical support, analyzed system data for debug and

corrective measures for AS/400 servers of IBM and client.

MS THESIS RESEARCH

. Title: "Comparison of Omni-directional Ultra-wideband (UWB) Microstrip

Slot Antennas and Directional Wideband Microstrip Patch Antennas for

Detection of Breast Tumors".

. Thesis Advisor: Prof. Satish K. Sharma, ECE, SDSU (Email:

*******@****.****.***).

. The purpose of this research work was to compare the antenna

characteristics of UWB Slot Antenna and Wideband patch antenna to

detect breast tumors. Individual and array of antennas were designed

around the breast tissue and the scattering parameters were recorded

and analyzed in frequency domain for various tumor sizes and shapes.

Experiments were performed by preparing tissue equivalent phantoms

which gave considerable results comparable to the simulation results.

The simulations were performed using Ansoft HFSS software and the

experiments were performed in the Antenna and Microwave Laboratory at

San Diego State University.

ACADEMIC PROJECTS (MS- San Diego State University)

Broadband Matching of Microstrip Antennas via Simplified Real Frequency

Technique

. A broadband antenna matching network for efficient transmission and

reception was developed using the Simplified Real Frequency Technique

(SRFT) that handles the matching problem through a scattering

approach. The circuit schematics was designed using the Microsoft

Office AWR software and MATLAB codes were generated for realizing the

matching network for equalizer, plotting gain and reflection circuits.

Investigations on Phased Array Antennas

. Research study project was conducted on phased array antennas in which

the antenna gain, directivity and beam steering and various phase

shifting techniques were investigated.

Median Filter Implementation in Texas Instrument Digital Signal Processor

TMS320C6711

. An Improved Median Filter was developed to remove the impulse noise

from the digital images. The noise pixels were replaced by the median

value using the built-in C compiler in the processor.

RESEARCH PUBLICATIONS

. Kirthika Nahalingam, and S. K. Sharma, "An Investigation on Breast

Cancer Detection by Ultra-wideband Microstrip Slot Antennas", IEEE

International Symposium on Antennas and Propagation. (Accepted for

publication)

. Kirthika Nahalingam and SK Sharma, "A Comparison of UWB Pentagon Slot

Antenna and Wideband Patch Antenna for Breast Cancer Detection", PIERS

Journal.(Under Editing).

RELEVANT COURSE WORK

. Advanced Antenna Course(EE740)

Course includes MIMO antenna design (PIFA) and analysis,

presentation of group and individual projects.

. Antenna and Wave Propagation (EE645), Microwave Devices and Systems

(EE540), Electronic Devices, Linear System Circuit Design, Digital

Circuits, Electro-Optics, Fiber Optic Communication, Digital Signal

Processing, Multirate Signal Processing, Medical Electronics.

Contact this candidate