Engineer Design

Homer T. GHAFFARI, PE

**** *. ****** ** ***** Valera

Tucson, AZ 85718

805-***-**** (CP)

*********@*****.***

SUMMARY

System Professional Engineer with Leadership Experience in Design and Agile

Development, Analysis and Simulation, Implementation and Verification of

the Multidisciplinary Technologies.

PROFESSIONAL EXPERIENCE

CONSULTANT: Professional System Engineer

2009-Present

Developed Signal Detection, Estimation, Tracking, Control, and Neural

Network Navigation using Multithread C/C++ /C# .NET, under Linux, Win

/Phone 7, or Eclipse IDE, for ARM and PIC Embedded WCDMA LTE 700 and UMTS

850 MHz 4G Radio, RFID Transceivers, Active/Passive Amplifiers and

Generators, in Interfering Systems.

BOEING: Senior Principal System Engineer

2006-2009

Commercial & IDS Airplane Systems, Everett, WA, Wichita, KS and El Segundo,

CA. (2008-2009)

Analyzed and Simulated the Electromagnetic Effects to the Engine Wingtip

due to Atmospheric Lightening, using the Finite-Difference Method in

EMITS, and 3D modeling and Meshing in CATIA, ENOVIA, and PATRAN.

Coordinated Engineering Change designs for Upgrading and Refurbishing of

Commercial Airplanes.

Analyzed and evaluated the data obtained from the testing, in Flight and

Simulation modes, of the Wide Aerial Refueling Pod (WARP) and Hose Drogue

Unit (HDU) and Controller (HDC) to integrate and design the Refueling

Tanker System using the Cockpit Switching and Boom Controller System.

Further, applied Robust Control Theory Simulations using SIMULINK, to

obtain Optimal Operation of the Fuel Slosh and Control of Fluttering in

Tankers.

Network and Satellite Systems, El Segundo, CA (2006-2007)

Analyzed, Designed, and Simulated the Signal Processing of the C/A, P(Y),

M, L1Cp, and L1Cd PN codes for the Satellite's Global Positioning System

(GPS) data transmission, using MATLAB, in Linear and Interplex of Gain or

Probability Weighted Combining, and Reception in Coherent or Noncoherent

modes. Evaluated the Solid State Power Amplifier (SSPA) and the Traveling

Wave Tube Amplifiers (TWTA) in the Simulations and Experiment.

Evaluated and Simulated the Power Law, Quantization and Dither Noise using

Mathematical Models in MATLAB to assess the Clock's Crystal Oscillator

Phase Offset and Hadamard Deviations of the GPS Timing.

RAYTHEON: Principal System Engineer

2004-2006

Space and Airborne Systems, El Segundo, CA.

Designed and developed Digital Signal Processing (DSP) Algorithms, using C

under TI DSP TMS320C6000 Macros and Priority-Sequencing Operating System,

for Signal Reacquisition in GPS Receivers using C/A, P(Y), and M Pseudo

Random (PN) Codes in Inertia Navigation System (INS) Aiding or under

Jamming conditions.

Implemented the Kalman and Adaptive Filters as the Phase/Amplitude and

Position/Velocity/Time (PVT) Estimation Methods with 6 Degree of Freedom

(DOF), including the Roll, Pitch, and Yaw Attitude Control of the

Spacecraft, for GPS Receiver as the Client and the Satellites as the Server

in a Spread Spectrum Environment.

Developed and Evaluated the Sensor and Power Design of Unmanned

Aeronautical Vehicle (UAV) system.

Improved the design of the GPS Receiver Oscillators by developing

Simulations in MATLAB, Data Debugger, and Monte Carlo scheme, in Multi-

Thread Visual C++.NET Templates, to analyze the thermal cycling impacts.

ASIP: Senior Design Engineer

2002-2003

Electro-Absorption Modulated Laser (EML) & Wave-Guided PIN (WGPIN),

Somerset, NJ.

Directed, designed, and automated the RF and Luminescence-Current-Voltage

(LIV) reliability determination of the EML and WGPIN developing the

Analytical and Statistical Methods in Visual Basic & Application (VB&VBA)

.NET, GUI, and the related EXCEL Macros to obtain the Threshold, Slope,

Current Leakage, Extinction Ratio, Activation Energy, Acceleration Factors,

and Mean Time to Failure (MTTF) for the Expected Lifetime.

AGILITY COMMUNICATIONS: Senior Device Engineer

2001

Tunable Laser Fabrication, Santa Barbara, CA.

Improved the stability of Tunable Lasers by developing analytical software

in VB, GUI, EXCEL Macros, and XML for Evaluation of Front and Rear Mirror,

Gain, and Phase (Tuning) at Thermal and Current Aging Intervals.

BELL LABORATORIES: Member of Technical Staff

1984-2001

Optoelectronics Development, Murray Hill, NJ (1999-2001)

Optimized the design of the Avalanche Photo Diode (APD) and PIN photo

detectors by developing algorithms in Multi-Thread Visual C++ using MFC

Templates, for Distributed Automatic Wafer and Diffusion Probing System.

Improved the design of RF Bandwidth of 2.5 and 10 GHz APD by measuring its

DC and RF characteristics, using S parameters, and implementing statistical

data analysis and simulations using MEDICI and FDM in C++.

Wireless Hardware Development, Whippany, NJ (1994-1999)

Designed the Global System Mobile (GSM) Speech Trans-coding, Time

Alignment, and Frame Synchronization to M or A interface of the Speech

Transcoder Unit by developing codes to send Uplink (Client) and Downlink

(Server) test vectors. Results were validated with Vocoder Transmission

Templates in C.

Designed and developed the AT&T DSP 1620 code for Time Alignment of GSM and

3G applications.

Obtained the Community European (CE) Marking by evaluating, designing and

EESOF Simulation of the Power Distribution, Electro-Magnetic Compatibility

(EMC), and Testing of the Speech Transcoder Frame.

Homer Ghaffari Page

2

Optimized Slow and Fast Frequency Hopping (FH) Spread Spectrum (SS) and

Kalman-Bucy Filter (KBF) Maximum Likelihood Estimation (MLE) in MATLAB and

SIMULINK with Random Monte-Carlo (MC) input signals.

Developed the design and integration of the Time Division Multiple Access

(TDMA) Base Station Hardware including Cavity Combiners, Enhanced Digital

Radio Unit (EDRU), DRU, and TDMA Transmit Unit boards, Cellular Series II

Classic, M, MM, and Personal Communication System (PCS), Code Division

Multiple Access (CDMA) frames by implementation of proper Filtering,

Amplification, Quadrature-Phase Shift Keying (QPSK) modulation, Walsh

Coding, Convolutional Encoding, Viterbi Decoding and Maximum Likelihood

Detections.

Optical Physics Research, Murray Hill, NJ (1992-1994)

Optimized thermal characteristics of laser diodes to avoid overheating in

Continuous Wave (CW) operation at room temperature by developing Finite-

Element Models (FEM) Simulations in ANSYS. Provided guidelines for future

fabrication of these polymer and semiconductor lasers.

Device modeled the spontaneous and stimulated emission in Whispering

Gallery Mode lasers to identify their absorption and gain factors by

developing device-simulation codes. Several numerical methods for the

solution of nonlinear set of rate equations of this III-V compound,

including the Newton-Raphson and Least Square Methods, were developed in

C++ under UNIX/LINUX and results were confirmed by experiment.

Automated collection of data, Image Processing, and Filtering of several

optical instrumentations by developing Functions, Classification,

Filtering, GUI, and Network Socket Interface Libraries in C and LABVIEW.

Improved the reliability of the AT&T Smart Cards (RFID) by tenfold with

applying numerical parametric studies in FEM for analysis of mechanical and

thermal stresses on devices.

Lightwave Electro-Optical Design, Whippany, NJ (1989-1992)

Designed and automated an Isothermal-Aging System, which maintained

constant heating and cooling temperature and acquired DC and RF

measurements from 50 optical receivers at designated times. Evaluated the

expected lifetime, degradation, failure density, cumulative failure,

survivor functions and hazard rates of the aging devices, and displayed

statistical distributions by applying S functions.

Investigated nonlinear vibratory effect, chaotic motion, and instability on

semiconductor devices, by implementing the Runge-Kutta integration method,

Fourier Transform, and Markovian techniques using C++.

Led the Design, Fabrication, Testing, Reliability, and Transfer of

Technology to Manufacturing of an Underwater Lightwave System Optical

Receiver. Further, implemented its Qualification in accordance to the MIL-

Std 883, and TelCordia Specifications.

Advanced VLSI Packaging (AVP) Design and Development, Murray Hill, NJ (1985-

1989)

Characterized several semiconductor packages showing temperature profiles,

thermal stresses, and heat fluxes using Finite Element Methods of ANSYS and

NASTRAN.

Analyzed semiconductors using Finite-Difference, Finite-Volume, and

Boundary-Element schemes in C.

Improved the cooling of AVP semiconductor packages by various methods of

forced air, liquid immersion, and cryogenics with instrumentation and

automation in HP Basic for characterization of their performance.

Optimized the design of Integrated-Photonics Transceiver circuits by

establishing automatic testing using several optical instrumentations,

IEEE488 board, PC, and developing Software in C and Shell programming.

Implemented robotic assembly of VLSI packages by coding in Automated-

Control Language (ACL).

Designed the wire-bonding technique on packages by statistical analysis and

provided comparative mean, variance, regression, and confidence levels by

coding modular programs and GUI in C under UNIX.

Verified design of packages by developing the Graphic Editor in C for a

Computer Aided Design System.

Computer-Aided Design and Image-Processing Systems, Murray Hill, NJ (1984-

1985)

Supplemented the Checksum routine to an existing I/O processor by coding in

C Structured Programming.

Increased speed by factor of 4, and reduced data storage in Solid State

Drives (SSD) by factor of 2, in the GRED package, by coding parsers and I/O

routines in Compressed-Binary Format in C under UNIX.

Designed and implemented database in Intelligent-Database Machine (IDM),

using Intelligent-Database Language (IDL), embedded SQL queries embedded in

C, and Freeform screens for Image Recognition related to demographical

data. Further, utilized the IDL preprocessor, by coding programs to design

and manage database.

Installed IDM device drivers on VAX using UNIX internals and applying

configuration methods.

Developed CAD programs in C using the core and GSX graphic extension.

EDUCATION

M.S., Computer Science: Communication Systems, STEVENS Institute of

Technology, Hoboken, NJ.

M.S., Engineering Science: Multidisciplinary, University of ILLINOIS,

Urbana, IL.

M.S., Aerospace and Mechanical Engineering: Thermal Sciences, University of

MISSOURI, Columbia, MO.

B.S., Mechanical Engineering: Power Systems, University of KANSAS,

Lawrence, KS.

SKILLS and RECOGNITIONS

PLATFORMS UNIX/LINUX, Android, VxWorks, ARM, Window, Visual Studio, NET,

ASP, CMMI, and LabWindow

LANGUAGES C, C++, Java, C#, Obj C, VB, FORTRAN, WPF, WCF, SQL, Script,

MSMQ, XML, PHP, and VHDL

PACKAGES MATLAB, Simulink, SPW, EESOF, Spice, LABVIEW, Python, MEDICI,

ANSYS, PATRAN, Nastran, ENOVIA, CATIA, IVT, EMITS, HFSS, Mathcad,

Mathematica, Template, S, CAD, IDL, UML, DOORS and EXCEL

AWARDS Several Quality Recognitions, Individual Performance Awards,

Honoraries, and Scholarships

MEMBERSHIP Institute of Electrical and Electronics Engineers and

Association for Computing Machinery PUBLICATIONS Published over twenty

Technical Reports, Presentations, and Papers in technical journals

PROFESSIONAL LICENSE Registered Professional Engineer (PE), held US Secret

Security Clearance

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