Resume of Chris Nadovich

1302 Diamond Street, Sellersville, PA 18960 USA
Email
(click to send email)

Voice Phone
+1.336-422-6239

For latest resume, browse http://www.nadovich.com/chris/resume.html

Chris Nadovich is a senior systems architect, developer, and engineering project team leader with diverse experience. He currently is accepting assignments as an independent consultant to undertake complex engineering efforts with an emphasis on RF, Analog, and Digital signal processing, board level design, EMI/EMC testing, and automated instrumentation.

Nadovich's areas of expertise are:

BIOGRAPHY

Nadovich received BSEE and MEEE degrees from Rensselaer Polytechnic Institute in 1981 with specialty in network theory and numerical analysis.

Mr Nadovich has worked in industry for over 20 years, serving as lead engineer guiding ground-up development of a number of sophisticated signal processing systems, including Software Radios, SuperResolution Direction Finding systems, Microwave and RF Measurement systems, and specialized Monopulse and SAR radars. This work gave him extensive experience in both hardware and software, including RF/Analog design, test, and measurement from DC to 94 GHz, and real time DSP using high performance digital systems and embedded software. In addition to being a skilled RF, microwave, and board-level electronics developer with a fresh skill-set on state of the art tools, Nadovich is also an experienced engineering team leader and project engineer, having worked in various supervisory roles, coordinating the work of individuals and subcontractors.

While working in industry as an engineer in the late 1980's and early 1990's, Nadovich was also a competitive bicycle racer. In 1994, Nadovich, united his skills as an engineer with his love for bicycle racing when in he designed the velodrome for the 1996 Olympic Games. The 250 meter track has 42 degree banking in the curves and a proprietary shape designed by Nadovich using a hybrid symbolic/numerical model implemented in Mathematica and based on the theory of the Fresnel integral. The track was temporarily installed at the Stone Mountain Cycling and Archery Venue near Atlanta Georgia for use in the 1996 Olympic games. To date, Nadovich has been the designer of 14 velodromes worldwide.

Synthetic Instruments Book By Nadovich Reflectometry Calculator for Android Since then Nadovich has continued his work in DSP, RF, and Microwave engineering as an independent consultant, along with several Internet and Software related projects in conjuction with the ISP he owns, JTAN.COM. These projects include contributions to the open source community and the development of technically related cell phone applications. Nadovich has written a book to help advance the state of the art in software-defined automated instrumentation. The book: Synthetic Instruments, Concepts and Applications was published by Elsevier in 2004.

These days, along with his consulting on RF/Microwave design, FCC compliance testing, DSP, and Board Level layout and design, Nadovich is >Director of Laboratories at Lafayette College in Easton, PA. His main responsibility is managing teams of young engineers engaged in multidisciplinary capstone projects ('10) .

RF, ANALOG, AND MICROWAVE SYSTEMS

Nadovich has decades of experience with cutting edge hardware development. He has designed and integrated modern RF and analog components in surface mount, stripline, coaxial, and waveguide assemblies, working at frequencies from DC to 94 GHz and power levels from thermal noise to 10 kilowatt CW. He has used RF/Analog EDA and Simulation tools including PSPICE, COMSOL Multiphysics, CST Microwave Studio, Sonnet, and Eagleware. Nadovich has developed several radar systems, including monopulse trackers, active phased arrays, and SAR imaging systems, and high-speed analog control systems for adaptive antennas and interference cancelers. Most recently he has been working on a high speed automated test system in a tablet form-factor, including detailed design of an ultra-compact microwave receiver and exciter.

DSP AND SOFTWARE RADIO

Instrumentation Radar HF Receiver Array Nadovich, an expert up/downconverter designer. was one of the first engineers in the world to create a detailed design for a Software Defined Radio. He is particularly experienced in real-time DSP multiprocessing, having designed two significant multiprocessor DSP systems: one, a radar control system comprising over 15000 lines of C code executing on three Intel X86 processors, the other a Software Radio array with forty-nine TMS-320 processors in concurrent operation.

These high performance digital systems had extensive Digital Signal Processing (DSP) and Software Defined Radio (SDR) capabilities, including FIR and IIR digital filters, FFT and Wavelet transforms, decimation, interpolation, and multidimensional signal processing algorithms.

Skill-Set Key Words

3D A/D APL ATE ATML Adaptive Adaptive-Array Altium Analog Analyzer Antenna Apache Aperture Assembler AUT Biological Board Beamformer BER BSD Broadband Butterworth C C++ CAD Capacitor CASS Cellular Chirp Circuit Clearance CLR Chebyshev Commercial Compact-Range COMSOL Control Convolution CPLD CST D/A DAC Design Delay DF Dipole DNS DSP Digital DxDesigner ECCM ECM Electromagnetics EMC Embedded EMI Feed FET FCC FIR Filter FMCW FORTH Fourier FPGA Firmware Gaussian GCC GPS 68HC11 High-Power HFSS HTML HF Horn IIR IGBT ISAR ISP Impedance Internet Inverter Inductor Instrument Integral ISM IVI Java JPEG Kalman Filter Lab LabView LabWindows Laplace Laser Layout Linux Measurement Microstrip MIMO MPEG MUSIC Mathematica Matching Matlab Metrology Microwave Millimeter-Wave Microcontroller Military Monopulse Multiphysics MySQL Network Neuron NTSC Numerical Op-Amp PC104 PAL Patch PIC PCB PHP Part-15 Perl Photovoltaic Positioner Power Phase Phased-Array Pulse PWB RF Radar RCS Resistor Reactance Reflection Reflector Rogers 4003 SAR Scalar Sensor Simulink Smart-Antenna Software Specific-Absorbtion-Rate Spread-Spectrum Stripline Surface-Mount Sonnet Spartan Super-Resolution Synthesizer Synthetic Systems TCP/IP Test TeX TMS-320 Theodolite TR-Module UART Ubuntu UHF VHF Verilog Velodrome Video VHDL Verilog VSWR WLAN Wi-Fi Waveguide X-band Xilinx Yagi XML Z-World Z80 2G 3G 8051 6805

Chronological CV

Pallas Systems, Columbus, OH, 2006-Present

LO Synthesizer Technical lead engineer at startup company. Developing a synthetic measurement hardware platform in a tablet-sized form factor. The system, incorporating a touch screen, CPU, and high speed A/D/A with flexible conditioning, can make sophisticated stimulus-response analog measurements from DC to microwave frequencies. Currently working on a dual-channel coherent up and down converter integrated into this device.

Lafayette College, Easton, PA, 2008-Present

Director of Laboratories in the Electrical and Computer Engineering Department. Teaches their senior-level capstone design course. The work involves managing multiple groups ('09, '10 ) of young engineers in team-oriented, multidisciplinary projects. Some project examples include a photovoltaic energy system and a LiFePO4 cell management system.

Venture Technologies, Bilerica, MA (2009)

Developed Verilog cores for FPGA logic to perform DSP and video signal measurements on a handheld test instrument.

Orbit/FR, Horsham, PA, 2005

Project Engineer coordinating the installation of new Compact Range equipment, including a multi-band scalar feed carousel, and a multi-segment machined aluminum reflector. Work included managing the civil survey, construction, installation, mechanical alignment using a coherent laser radar, and RF field probing the final system for acceptance testing.

Graco, Exton, PA, 2005

Consulted on FCC Part 15 Verification and Certification issues for an intentional-radiator product.

Schulmerich Bells, Sellersville, PA, 2004

Consulted on FCC Part 15, IC, and EC Verification and Certification issues for intentional-radiator products. Designed various antennas for hand held wireless products.

Access Research, St Louis, MO, 2003

Designed a propagation channel simulator matrix for automated testing of multiple RF communications devices.

Lambda Sciences, Villanova, PA, 2002

Designed an L-band multi-channel phase tracking radar receiver.

KVH Industries, Middletown, RI, 2001

Designed a low cost X-band LNA for a commercial phased array application.

Lambda Sciences, Villanova, PA, 2001

Designed a 6 channel X-band receiver for a switched SAR/Chirp instrumentation radar.

Aeroflex-Lintek, Powell, OH, 2000

Designed numerous RF upconverter and downconverter circuits in microstrip as part of an overall redesign of a synthetic instrumentation system. Was a key software and hardware architect of this system and participated in numerous technical and marketing decisions based on extensive conversations with customers and in collaboration with sales and engineering personnel.

OLYMPIC VELODROME, Atlanta GA, 1994 to 1996

Co-authored a winning technical proposal for the construction of a 250 meter velodrome for the 1996 Olympics. The track has 42 degree banking in the curves and a proprietary shape designed by Nadovich using a hybrid symbolic/numerical model implemented in Mathematica and AutoCAD and based on the theory of the Fresnel integral. Comprising over 75 tons of structural steel framework, the track was fabricated on a tight schedule at C.H. Landis Company (Souderton, PA) under Nadovich's supervision. It was temporarily installed at the Stone Mountain Cycling and Archery Venue near Atlanta Georgia for use in the 1996 Olympic games.

ULTRAFAST CORPORATION, Malvern, PA, 1995

Analog design consultant supporting the introduction of a new, enhanced version of an ultrasound system for measuring the torque applied to fasteners. Consulted on transceiver design and the design of matching networks.

DIGITAL VIDEO ARTS LTD, Dresher, PA, 1995 to 1996

Developed microcode to perform Wavelet based data compression algorithms on NTSC/PAL video using the VCP a high performance SIMD architecture computing element.

CHECKPOINT SYSTEMS, Thorofare, NJ, 1995

Hardware/Software consultant supporting the introduction of a new, cost-reduced version of an electronic security product built with several TMS-320, Neuron, and 80188 microprocessors, various FPGA's and PLD's, and analog/RF circuitry. As part of his work, Nadovich wrote code for each of the embedded processors, including a portable FORTH compiler written in C that was used as a diagnostic scripting facility.

FLAM & RUSSELL, INC, Horsham, PA, 1984 - 1995

R&D Engineer in charge of custom hardware development. Developed a W-Band (94 GHz) radar transceiver for a Compact RCS range, and a 68HC11 based control system for UHF high power amplifiers.

Lead engineer that guided the development of a transportable X-band SAR imaging system and a transportable X-band, monopulse instrumentation radar. Was responsible for coordinating the RF, video, digital, mechanical, and software efforts required to build these radars. And was the primary author of the winning proposals that resulted in this $4+ million dollars of business.

In other programs, he served as systems engineer for a pair of 10 kW UHF helix arrays, positioners, tower, and concrete foundation delivered to NASA for use as a command antenna system. He designed and supervised the construction of the RF hardware for a three-element adaptive antenna array, with custom circuitry including a four-channel, phase coherent receiver system and a broadband, adaptive, analog beamformer. He participated in experiments to investigate the feasibility of MOM or PN junction millimeter wave and infrared mixers. And he made significant contributions to the development of the RCS imaging software sold by Flam & Russell, particularly in the area of image RCS calibration and time domain processing.

Designed a twelve-channel, hybrid analog/digital receiver system for use in super- resolution DF. Each of the twelve, precisely matched receiver channels consisted of custom RF/analog downconversion circuitry followed by real-time digital signal processing implemented in four TMS-320 microprocessors. Designed both the RF and digital hardware and the real-time firmware.

Wrote software implementations of the super-resolution direction finding algorithms Maximum Likelihood and MUSIC for use with the above receiver system. Integrated the DF software into a general antenna array simulator, permitting testing of the algorithm with arrays of arbitrarily located loops and dipoles illuminated by a generalized signal environment.

JTAN, Sellersville, PA, 1991 to present

Owns and manages an Internet presence provider business JTAN with customers worldwide.

FAIRCHILD WESTON, Sarasota, FL, 1986 to 1987

Developed a UHF telemetry data link for use in a remotely piloted vehicle to downlink digitized surveillance video. Work involved design of microstrip and stripline circuitry, including an agile varactor preselector, and custom analog and digital components.

GENERAL ELECTRIC, Utica, NY, 1985 to 1986

Performed trade-off study exploring alternative T/R circuit architectures in a 2-18 GHz active phased array antenna used for airborne RADAR. The T/R circuits were microwave hybrids containing several Gallium Arsinide MMIC's.

LITTON AMECOM, College Park, MD, 1983 to 1984

Contributed to the proposal of a high capacity, frequency multiplexed, Local Area Network. Participated in an architecture trade-off study that contrasted TDM and FDM technologies.

ZEGER-ABRAMS, Glenside, PA, 1981 to 1983

Participated in the development, construction, and delivery of interference cancellation hardware to demonstrate the feasibility of HF SIMOP (simultaneous operation) on the P3-C aircraft. The delivered hardware included a high power Adaptive Interference Canceler, an interference insensitive ALC circuit for a 1 KW HF transmitter, and a synchronous discriminator for an automatic antenna coupler.

Contributed to the design and development of a high speed, low distortion, low noise, high power, broadband complex-weight for use in adaptive systems.

Synthesized and mathematically analyzed candidate system designs for adaptive antenna array processors that incorporate time, frequency, or code multiplexing. Compatibility with other ECCM techniques such as spread spectrum modulation was investigated. Wrote technical reports describing important results and promising systems.

EDUCATION

RENSSELAER POLYTECHNIC INSTITUTE

Completed Master's Degree (7/81) with specialty in network theory and numerical analysis. Thesis work, an efficient algorithm for the solution of partial differential equations, required extensive programming in APL and FORTRAN, along with detailed mathematical analysis. Another advanced project was the design of a bit-slice processor for high speed numerical convolution. Was Research Assistant; was supported by IBM.