Expert Details
Circuit Design Engineer–Analog, Power Supply, EMI, Video, Audio, RF, Motors, Sensors, Ckt Simulation
ID: 726141
New Jersey, USA
He is an expert in noise reduction techniques in electronic systems as well as an expert in performing thermal analyses for electronic systems. He is an expert in Signal Integrity issues and in traveling wave theory on both loss-less and lossy PCB traces (or cables) with multiple tees and junctions. He is an expert in design, analysis and simulation of EMI, lightning, and ESD protection circuitry (MIL-STD-461, MIL-STD-464, DO-160 and MIL-STD-704).
He is also an expert in grounding (DC and AC) and shielding. He is also expert in magnetic design principles and understands the theory, design & applications of transformers, chokes, ferrites, etc. He can derive magnetic field theory from electric field theory and the special theory of relativity. He is also an expert in establishing criteria for stackup, electronic component placement and routing for PCB’s.
Education
| Year | Degree | Subject | Institution |
|---|---|---|---|
| Year: 1973 | Degree: PhD partial course work (no thesis) | Subject: Mathematics | Institution: Stevens Institute of Technology |
| Year: 1969 | Degree: MSEE | Subject: Electrical Engineering | Institution: Stevens Institute of Technology |
| Year: 1969 | Degree: BSEE | Subject: Electrical Engineering | Institution: Rutgers University |
Work History
| Years | Employer | Title | Department |
|---|---|---|---|
| Years: 2014 to 2015 | Employer: GE Healthcare | Title: Consultant | Department: Troy, NY |
Responsibilities:Amorphous Silicon Thin Film Transistor Digital X-Ray Sensor Imager: performed complex analyses & ran circuit simulations using PSpice; made recommendations to mitigate ESD issues on their glass panel designs. Addressed both the human body model (HBM) & the charged device model (CDM). |
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| Years | Employer | Title | Department |
| Years: 2012 to 2014 | Employer: Honeywell Defense and Space | Title: Consultant | Department: Glendale, AZ |
Responsibilities:Worst Case Analysis (WCA) using PSpice/ORCAD/Cadence, LTspice, MathCAD & Excel for high reliability classified military satellite circuits, which included consideration of all circuit tolerances including end-of-life and Space radiation effects on circuit components. Worst Case analysis included extreme value (EVA), RSS, Monte Carlo together with confirming hand analysis derivations. End-of-life (EOL) tolerances included purchase, temperature, radiation and aging. Modified PSpice op-amp macro models for EOL performance using PSpice model editor tool and verified results with simulations. Other analyses included stability (phase/gain margin) for “loop” & “multi-loop” type circuits using derived modified Middlebrook Method, radiation Single Event Effects (SEE) transient analyses, etc. Also, analyzed a multitude of various circuits for satellite’s “control moment gyroscope” function. Fixed/redesigned other engineers’ deficient circuits to make compliant with requirements & repeated WCAs/simulations. |
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| Years | Employer | Title | Department |
| Years: 2012 to 2012 | Employer: United Technologies Aerospace | Title: Consultant | Department: Totowa, NJ |
Responsibilities:Re-design of existing circuits for EMI protection, HEMP, inrush current, etc. for classified military missile program. For analyses, used tools such as PSpice/ORCAD/Cadence, MathCAD & Excel plus hand derivations. |
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| Years | Employer | Title | Department |
| Years: 2011 to 2012 | Employer: Lockheed-Martin Space Systems Company | Title: Consultant | Department: Littleton, CO |
Responsibilities:Worst Case Analysis using PSpice/ORCAD/Cadence, MathCAD & Excel for high reliability NASA & NOAA GOES-R satellite circuits, which included consideration of all circuit tolerances including end-of-life and Space radiation effects on circuit components. Worst Case analysis included extreme value (EVA), RSS, Monte Carlo together with confirming hand analysis derivations. End-of-life (EOL) tolerances included purchase, temperature & radiation. Analyses/simulations included stability (phase/gain margin) for “loop” & “multi-loop” type circuits, controllers, power supplies, etc. along with noise analyses (using Excel &/or PSpice) for A/D channels and the more common limits analyses for other more general circuits like current limiters, relay drive mosfet circuits, transistor circuits, etc. Fixed/redesigned other engineers’ deficient circuits to make compliant with requirements & repeated WCAs/simulations. |
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| Years | Employer | Title | Department |
| Years: 2010 to 2012 | Employer: Goodrich Sensors and Integrated Systems | Title: Consultant | Department: Totowa, NJ |
Responsibilities:Generation of electrical system requirements and low noise electronic redesign of micro-electromechanical systems (MEMS) based piezoelectric accelerometers and gyroscopes. Design of buck-boost, boost & buck DC-DC switching converters (including loop stability control & AC input (noise) transfer functions) & low-dropout LDO’s. EMI system & circuit analysis/design/simulation which included radiated/conducted susceptibility & emissions (MIL-STD-461 & DO-160). |
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| Years | Employer | Title | Department |
| Years: 2009 to 2010 | Employer: ITT Space Systems Division | Title: Consultant | Department: Fort Wayne, IN |
Responsibilities:Worst Case Analysis (PSpice) for high reliability NASA & NOAA satellite circuits, which included consideration of all circuit tolerances including end-of-life and Space radiation effects on circuit components. Worst Case analysis included extreme value (EVA), RSS, Monte Carlo together with confirming hand analysis using other tools like MathCAD and Excel. End-of-life (EOL) tolerances included purchase, temperature & radiation. Performed stress analysis on derated components and thermal analysis calculation of semiconductor junction temperatures, etc. Conducted stability (from oscillation) analyses both by hand & using PSpice. Conducted analyses referring all circuit noise to circuit input using combination of PSpice & equivalent noise bandwidth concepts. Noise included opamp voltage & current noise, resistor noise, opamp rail noise, A/D noise, etc. Supported reliability engineers with MTBF and FMEA analysis. Wrote white papers, mentored and gave on-site talks/classes to engineers on PSpice tools, PSpice “tricks”, multiple loop feedback theory, etc. |
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| Years | Employer | Title | Department |
| Years: 2008 to 2009 | Employer: Alcatel-Lucent | Title: Consultant | Department: Murray Hill, NJ |
Responsibilities:Intellectual Property & Patent Infringement Expert: analog, video, audio, RF, EMI, power supplies and wireless circuits. Rated and identified potential candidate patents for license ability or infringement by others. |
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| Years | Employer | Title | Department |
| Years: 2006 to 2009 | Employer: GE | Title: Consultant | Department: Aviation (formerly Smiths Aerospace) |
Responsibilities:Circuit design, analysis, simulation and testing of brushless DC motors for aircraft actuators. EMI, lightning (low frequency, RF & GHz) and ESD circuit design, analysis and simulation. Performed analysis and PSpice modeling and simulations for DO-160, MIL-STD-461 and MIL-STD-704 compliance on all of company’s programs and redesigned other engineers’ existing non-compliant circuits as required. |
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Government Experience
| Years | Agency | Role | Description |
|---|---|---|---|
| Years: 1992 to 2000 | Agency: classified | Role: circuit design engineer | Description: classified |
| Years: 1997 to 2000 | Agency: NSA | Role: circuit design engineer | Description: classified; unique & novel circuit design that others said was impossible to do; I demonstrated that it was possible & demo'd it |
Career Accomplishments
| Associations / Societies |
|---|
| IEEE |
| Awards / Recognition |
|---|
| Dean's List & Summa Cum Laude |
| Publications and Patents Summary |
|---|
| Notebooks of unpublished derivations & analyses for private use. |
Additional Experience
| Expert Witness Experience |
|---|
| Patent Infringement Expert; analog, video, audio, RF, power supplies and wireless circuits. Rated and identified potential candidate patents for license ability or infringement by others. |
| Marketing Experience |
|---|
| Expert in electronics field by virtue of academic training & 45+ years of technical, hands-on experience in aerospace, defense, military, utility, industrial and commercial arenas. |
| Other Relevant Experience |
|---|
| • Expert in both electromagnetic field approach and circuit analysis approach in analyzing electrical problems; uses both approaches where possible to confirm analysis results. • Expert in using mathematical derivation analysis of systems/circuits coupled with confirming computer modeling and simulation tools such as PSpice, MathCAD, MATLAB, and Excel. • Expert in circuit network theorems (application and derivations). • Expert in developing and deriving algorithms for complex systems. • Expert in Worst Case Analysis (WCA) including extreme value (EVA), RSS, Monte Carlo together with confirming hand analysis using other tools like PSPICE, MathCAD and Excel, etc. • Very competent using Matlab & Simulink tools for systems analysis. • Expert in analog design. • Expert in low-noise front-end designs. • Expert in low power design. • Expert in high-speed analog circuit design and high speed ECL/GaAs digital circuit design. • Expert in designing AC-DC and DC-DC converters for power supplies. • Expert in data acquisition using A/D’s and D/A’s. • Expert in video and audio design. • Expert in designing DC brushless motors. • Expert in design of sensor (temperature, piezoelectric, event-capturing, data log, etc.) electronics. • Expert in RF design. • Very competent in digital design. • Expert in designing feedback control loops. • Expert in feedback stability theory, control loops and applications. • Expert in servomechanism electronics design. • Expert in noise reduction techniques in electronic systems. • Expert in performing thermal analyses (steady state, transient, pulse, etc.) for electronic systems. • Expert in Signal Integrity issues. • Expert in traveling wave theory on both loss-less and lossy PCB traces (or cables) with multiple tees and junctions. • Expert in design of DC-DC converters: buck, buck-boost, boost, SEPIC, LDOs, etc. • Expert in design, analysis and simulation of EMI, lightning, ESD protection circuitry and input spikes/surges (MIL-STD-461, MIL-STD-464, DO-160, MIL-STD-704, MIL-STD-1275, etc.). • Expert in grounding (DC and AC) and shielding. • Expert in magnetic design principles. Understands theory, design & applications of transformers, chokes, saturable reactors, motors, ferrites, etc. Can derive magnetic field theory from electric field theory and the special theory of relativity. • Expert in establishing criteria for stackup, electronic component placement and routing for PCB’s. • Very familiar with PCB layout Design Standard ANSI/IPC-D-275. • Familiar with most MIL Standards and Specifications. • Understands electro-optic theory and applications. Familiar with fiber-optic design and applications. • Understands theory of (high) voltage breakdown-distance versus pressure (altitude) and applications. • Understands component de-rating (voltage, current, power, thermal, etc.) • Understands reliability theory and applications (FMEA, FMECA, MTBF, etc.). • Understands DSP theory and applications. • Understands power correction factor (PFC) theory for both linear & non-linear loads (such as SMPS’s). For SMPS’s, familiar with both passive & active PFC schemes. • Authored system, circuit, PCB layout, test and design review guidelines for clients. • Engineering mentor. • Leader in peer reviews and adheres to an Engineering Design Process. |
Fields of Expertise
analog circuit, analog circuit design, analog circuit simulation, electronic circuit analysis, electronics modeling, feedback loop, HSPICE software, electric circuit design, pn junction diode reverse breakdown voltage, DC-to-DC converter, radio-frequency switch, toggle switch, circuit trace, digital delayer, sensor technology, radio frequency circuit, radio-frequency electronic equipment, amplifier output stage, analog output, passive circuit, electric circuit theory, electronic breadboard, phase detector, matrix switch, position sensor, combined analog/digital circuit, power factor controller, phase-locked loop design, silicon sensor, feedback control system, control-system direct-current motor, thermal sensor, parallel circuit, counterelectromotive force, electronic equipment design, aircraft control system, electromechanical control system, control system analysis, control system design, electronics, digital circuit simulation, control loop dynamic analysis, electronics design engineering, piezoelectric sensor, amplifier circuit, temperature sensor, electric pulse circuit, electric surge suppressor, phase-locked loop, resistance-capacitance circuit, alternating-current to alternating-current conversion, control-system modeling, power-supply circuit, electronic circuit design, alternating-current transformer, aerospace control system, eddy current, wave-generating circuit, electronic circuit, electric conductor, pressure sensor, attenuator, thermostat, switching circuit, electric switch, solid-state switch, servomechanism, power electronics, optical sensor, electric filter, electric circuit, control system, control loop, amplifier