Electronics Engineer

Resume Summary

JOSEPH D. LOTITO, JR.

*** ********* *****

Paramus, NJ 07652

email: available upon request

home: 201-***-****; cell: 201-***-****

Circuit and Systems Design Engineer – Analog, Power Supply, EMC, EMI, Video, Audio, RF, Motor, Sensors, Avionics, Navigation & Guidance Systems, Displays, High Speed Communications

ACADEMIC:

Graduate PhD Math Dept., 4 courses, Stevens Institute of Technology (GPA=4.0), 1972-1973

MSEE, Stevens Institute of Technology (GPA=3.9), 1972

BSEE, Rutgers University (Dean’s List), 1969

MIT Digital Signal Processing (DSP) Course, 1979

NJIT Microprocessor Design Course, 1978

Adjunct Faculty in Mathematics, Bergen Community College, 1977-1978

PROFESSIONAL EXPERIENCE: (many of below also involved power supply circuit design and EMI, lightning and ESD protection)

2008-pres. Alcatel-Lucent, Murray Hill, NJ

Consultant: part time. 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.

2008-pres. Companies: Silicon Valley Expert Witness Group; Kevin Kennedy & Associates; Intota; Cecon

Consultant: ongoing but irregular for above companies: Intellectual Property, Patent Review & Expert Witness

2006-2009 GE Aviation (formerly Smiths Aerospace), Whippany, NJ

Consultant. 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.

2000-2006 Technology Enhancement, Woodbridge, NJ

Consultant. Power utility system analysis, algorithm development, circuit design, analysis, simulation and testing of high-speed sensors for underground fault locating of 27kV distribution feeders. Fault location was successfully predicted at each field test. Designed diagnostics electronics equipment for 27kV distribution feeders. Performed feasibility study (successful) for NYC underground communications system.

1997-2000 General Dynamics, (formerly Bell Labs, Lucent), Whippany, NJ

Consultant. Design, analysis, simulation and testing of RF and GHz communication circuits for classified programs using GaAs and ECL devices; timing resolution of less than one picosecond was attained by using novel circuit and PCB techniques.

1996 AlliedSignal, Teterboro, NJ

Consultant: part time. Wrote technical portion of proposal for AH-64 helicopter display: won program.

1995-1997 Lucent, (formerly Bell Labs, AT&T), Whippany, NJ

Consultant. Design, analysis and testing of sensitive low-noise, very low power fiber optic receivers, ultra-low MMIC matrix switching and support circuitry including DC-to-DC power supplies.

1995 AlliedSignal, Teterboro, NJ

Consultant: part time. Circuit and system troubleshooter of other engineers’ video circuits for a helicopter display.

1993-1995 AT&T, (Bell Labs), Whippany, NJ

Consultant. Design, analysis and testing of power supply circuitry for ocean fiber optic cable.

1993 AlliedSignal, Eatontown, NJ

Consultant. Performed worst-case analysis and circuit simulations of other engineers’ existing aerospace circuit designs. Redesigned non-compliant circuits as required.

1986-1993 AlliedSignal, Teterboro, NJ

Consultant. Worked at two divisions simultaneously: Design, analysis and testing of aircraft flight control circuitry, helicopter display circuitry and test equipment circuits.

1982-1986 Singer-Kearfott, Wayne, NJ

Consultant. Circuit design, analysis and testing of (AMRAM) missile navigation and guidance system (accelerometers & gyroscopes) electronics. Circuit redesign, analysis and testing of various NASA Space Shuttle electronics.

1982 Lockheed, Plainfield, NJ

Consultant: part time. Wrote a technical portion of proposal (Effects of Amplitude and Phase Nonlinearities on FM System): won program.

1982 Bendix Flight Systems, Teterboro, NJ

Consultant. Circuit design, analysis and testing of all of C141 cargo plane’s flight control system’s electronics.

1981-1982 Bell Labs, Holmdel, NJ

Consultant. Circuit design, analysis and testing of plasma display drivers.

1981 Northern Precision Labs, Fairfield, NJ

Consultant. Design, analysis and testing of synchro and resolver circuitry for entertainment industry.

1980-1981 IBM Corporate Research Center, Yorktown Heights, NY

Consultant. System, circuit design, analysis and testing of ultra-low distortion audio data acquisition system.

1980 Burroughs, Plainfield, NJ

Consultant. Circuit design, analysis and testing of plasma display drivers.

1979 Lockheed, Plainfield, NJ

Consultant. RF circuit design, analysis and testing of aircraft communication equipment.

1979 Singer-Kearfott, Wayne, NJ

Consultant. Circuit design, analysis and testing of missile navigation and guidance system (accelerometers & gyroscopes) electronics.

1978-1979 ITT Defense Comm. Div., Nutley, NJ

Senior Member of Technical Staff. Circuit design, analysis and testing of military telephones. Designed original active gyrator circuit.

1976-1978 Conrac, West Caldwell, NJ

Senior Circuit/Systems Design Engineer. Circuit design, analysis and testing of F18 displays.

1969-1976 Singer-Kearfott, Wayne, NJ

Senior Circuit Design Engineer. Circuit design, analysis and testing of (Trident) missile navigation and guidance system (accelerometers & gyroscopes) electronics including hybrid circuits.

SUMMARY OF PROFESSIONAL EXPERIENCE:

• Technical leader and member of Design/Development/Research teams.

 System/Circuit design, analysis and testing of high reliability hardware used in government, military, aerospace, Space, industrial and commercial equipment: RF, fiber optics, audio, video, radar, video recorders, telecommunications, data communication, aircraft & flight auto-pilots, missile navigation & guidance, CRT displays, hi-resolution flat panel LCD displays, plasma displays, servomechanisms, DC brushless motors, AC-DC & DC-DC power supplies (linear, LDO’s & switching; boost, buck, flyback), data acquisition, transducers, temperature control, telemetry.

 System/Circuit design, analysis and testing of circuitry such as: pulse generator with less than one picosecond resolution, 155 Mbit/s, 622 Mbit/s and 2.5 Gbit/s high sensitivity, low power optical receivers with APD control loops, 622 MHz PLLs, 10 GHz matrix switching and power management; converters - A/D’s, D/A’s, Synchro/Digital, Resolver/Digital, Digital/Synchro, Digital/Resolver; hi resolution monochrome video, RGB video, phase-locked loops (42 MHz), VCOs; video bit pattern generators, AGC, multipliers; amplifiers – operational, voltage feedback, current feedback (800 MHz), composite AC/DC, Norton, power, transconductance/trans-impedance, & logarithmic; multiplexing, servos, sample/track & holds; passive/active filters - Butterworth, Elliptic, Chebyshev, Bessel, switched-capacitor, programmable frequency/continuous-time filters, & self-tuning filters; voltage references, voltage regulators, current sources, photo-mosfets, optoisolators, infrared photodiodes/leds, integrators, high/low voltage linear/switching power supplies, transformers, motors/generators, JFET’s, IGBT’s, power mosfets, hexfets, power/small signal transistors, sinusoidal/square wave oscillators, digital logic (TTL, CMOS, ALS/AS, F, FCT, AC/ACT, HC/HCT, ABT, ECL/PECL, Eclipse/Eclipse Lite/Eclipse Plus, GaAs), RAM/ROM, EPROM, EEPROM, HOTlink 330 Mbit/s high speed serial data transfer over coax with encoding/decoding & error correction. Determined technical circuit requirements and designed EMI protection circuitry for: radiated & conducted emissions and radiated & conducted susceptibility and for lightning and for ESD. Components used included both common mode & differential mode chokes, arrestors, gas discharge tubes, transorbs, TVSs, MOVs, resetable polymeric fuses, inrush current limiting circuits, damping networks, etc.

 Motor and Magnetics design: Designed three-phase motor drivers for multi-pole motors, which included mosfet bridges, PWM current control, and decoding logic for single-ended Hall effect sensors that generated the required commutation sequence for the mosfet or IGBT power stages. Designed DC brushless motor controllers with both external speed control feedback loops & external current control feedback loops. Derived closed-loop static speed-torque curve (speed regulation vs. mechanical load torque) for various actuator motor applications as function of electrical and mechanical parameters such as: motor torque constant, dynamic friction torque, motor and load moment of inertia, torque load, mechanical time constant, electrical time constant (L/R which may or may not appear in any transfer function), number of poles, motor rotational speed/tachometer output frequency, integrator time constant, circuit loop gain & various circuit control elements (constants such as resistors, fixed reference voltages, etc.). Analyzed closed-loop dynamic performance and control loop stability performance. Derived (dynamic) transfer function of actual motor speed vs. a step in load torque change. Derived (dynamic) transfer function of actual motor speed vs. a step in commanded motor speed. Expert in magnetic design principles. Understands theory and applications and has designed magnetic components such as transformers, chokes, saturable reactors, ferrites, etc. for power supply, EMI/lightning and various other applications. Understands and designs magnetics circuits using Faraday’s Law, Ampere’s Law, Gauss’s Laws (Maxwell’s Equations) and concepts of energy per unit volume storage in a magnetic field (such as a transformer) and energy stored in an inductor, reluctance, etc. Can derive equations based on either circuit principles or electromagnetic field principles (equivalence). Understands transformer and magnetics equivalent circuits and their derivations, B-H curves, etc. Understands magnetic imperfections, parasitics and limitations such as core loss, hysteresis, eddy currents, heating losses, interwinding capacitance, leakage inductance, winding losses, frequency dependency of magnetic material permeability, saturation, etc.

 RF Circuit design: PCB RF designs incorporating including low-noise amplifiers (LNA), receivers, frequency mixers, splitters/combiners, RF transformers, limiters, directional couplers, modulators, RF switches, transistors, fixed attenuators/terminations/matching pads, modulators/demodulators, phase locked loops (PLLs), voltage controlled oscillators (VCOs), filters (active with operational amplifiers and passive), power amplifiers, transmitters, A/D’s, D/A’s and various other ICs and MMIC’s. Derived and wrote generic computer programs for RF designed PCB’s (transmission line lattice diagrams, via effects, microstrip/stripline controlled impedance, skin effect and dielectric losses). Understands transmission line theory, mismatches, reflections and crosstalk. Understands antenna theory. Has performed worst-case RF system budget link analysis. Signal integrity expert. EMI, ESD and lightning protection expert.

 System and circuit design of high voltage (27 kV distribution and 138 kV transmission) monitoring equipment for the electric power utility industry. Electric Power Utility Projects:

- Developed traveling wave theory and algorithms (multiple branches/tees) and then designed hardware for Underground Fault Locating System on 27 kV High Voltage primary distribution feeders throughout NYC. Prototype systems were deployed and successfully tested on different feeders in many networks.

- Designed various monitoring, diagnostic, and data logging equipment used by several major public power utility companies across the US.

- Performed successful feasibility studies for transmission fault locating on 138 kV feeders.

- Performed a successful feasibility study for a NYC citywide underground communications system.

• COMPETENCIES:

 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 both worse case and statistical analysis design techniques.

 Expert in analog 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 and applications.

 Expert in servomechanism electronics design.

 Expert in noise reduction techniques in electronic systems.

 Expert in performing thermal analyses 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, analysis and simulation of EMI, lightning, and ESD protection circuitry (MIL-STD-461, MIL-STD-464, DO-160 and MIL-STD-704).

 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 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 reliability theory and applications (FMEA, FMECA).

 Understands DSP theory and applications.

 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.

TOOLS:

• Mathcad

• PSpice

• Orcad

• Matlab

• Microsoft Office (Word, Excel, Powerpoint)

• PADS/Mentor Graphics

SECURITY CLEARANCES:

• Held both Secret and Top-Secret (SCI, CI poly) security clearances with multiple government agencies/services.

JOB DESCRIPTION KEY WORDS AND PHRASES

Circuit Design Engineer

Systems Design Engineer

Analog Circuit Design

Power Supply Circuit Design

EMC Design

EMI Design

Electronics Design

Electro-Optic Design

Video Circuit Design

Audio Circuit Design

RF Circuit Design

Motor Controller Circuit Design

Avionics Electronics Circuit Design

Navigation System Electronics Circuit Design

Guidance System Electronics Circuit Design

Display Electronics Circuit Design

High Speed Communications Circuit Design

PCB Design

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