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A decision on a new launch date for NASA’s James Webb Space Telescope, and announcement of any potential breach of its $8 billion cost cap, could come next week, an agency official said March 20.
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Seeking to return a borrowed satellite as soon as possible, Israeli fleet operator Spacecom is very close to purchasing a new satellite dubbed Amos-8, a company official said March 14.
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For the space-based infrared SBIRS satellites 5 and 6, the Air Force says the per-unit cost went down 12 percent — from $1.9 billion to $1.6 billion.
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To prevent collisions in space, nations with advanced orbital monitoring abilities need to share data with each other. Russia, being skilled in space situational awareness (SSA), should be part of the global effort to protect the space environment, experts said March 15 at the Satellite 2018 conference here.
Fri, 16 Mar 2018 13:48:13 +0000
In its budget proposal for the coming year, the U.S. Air Force is trying to send the same message to foreign adversaries and critics at home: the service definitely is not underestimating threats the United States and its allies face in space.
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The hand-wringing continues at the Pentagon over how to respond to Chinese and Russian missile advances.
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    Personal information
    Contact information
    Candidate Profile
     Date Submitted:18-06-2011
     Last Modified:29-09-2016 (05:04)
    Job information
     Current job:Power Electronics Applications Engineer
     Employment Term:Either
     Job location:Anywhere
     Date available:within a month
     Industry:Civil Agencies/International Organizations, Satellite Manufacturers and Subcontractors, Consulting/Engineering Services
     KeywordsPower Systems Design, Power Electronics, Analog Electronics, Digital Electronics, Simulation, Switch Mode Power Supply Design, Battery Management, Motor Control and Drive, Worst Case Circuitry Analysis (WCCA), GaN Transistors


    To secure a position as an Electronic Design Engineer – Development and Design of Aerospace Power Systems, Analog/Digital Electronics and Microcontrollers, Switch Mode Power Supplies, and Motor Control and Drive.



    Highly experienced in designing Aerospace Power Systems, Switch Mode Power Supplies, Analog and Digital Circuits, Microcontrollers Based Equipment, Motor Control, Temperature and Process Control, and Sensors.

    Experienced in evaluation and implementation of GaN transistors in resonant and hard switching power electronics converters.

    Excellent developed skills in designing aerospace and telecom power systems.

    Highly experienced in designing switch mode power supplies (SMPS) and motor drives.

    Experienced in practical applying of analog and digital electronics, and microcontrollers.

    Skilled in simulating SMPS using Ridley’s POWER 4-5-6 Power Supply Design Software.

    Highly developed skills in electronic circuit simulation using LT/PSPICE, including worst case analysis (WCA).

    Skilled in magnetic components, inductors and transformers, design.

    Skilled in practical applying of control theory including modeling, stability and observer design.

    Good knowledge and experience in variable structure and adaptive control, including simulation in SIMULINK/MATLAB.

    Skilled in performing PCB design techniques for EMC compliance, and familiar with EMC measurements.

    Experienced in writing test procedures, test reports, product technical requirements, and lab testing.

    Seasoned and honest professional, problem solver, eager to learn, can work on his own or as part of a team.

    Speak English, Bulgarian, Serbian, Russian, and French.



    02/2013 – 09/2016

    GaN SYSTEMS, Canada

    Development and Design of GaN FETs Based Power Electronics Applications

    Power Electronics Applications Engineer

    The main activity were design of double pulse test boards and parameters measurement of the company's GaN FETs, including design of resonant (MHz range LLC and Active Clamp and Reset Flyback) and hard-switched (Bridgeless Totem Pole PFC and Synchronous Boost) converters.

    Analyzed characteristics of different measurement systems for characterizing GaN FETs.

    Measured GaN FET parameters: Rdson, current and voltage rise and fall times, and switching energy dissipation.

    Estimated GaN FETs power switching capabilites at different frequencies.

    Designed 100V/80A and 650V/50A half bridge double pulse test boards for testing 100V and 650V GaN E-HEMTs, and 650V GaN based cascode switches.

    Designed GaN and UCC2800 controller based synchronous boost converter – Vin=10V, Vout/Pout=100V/100W.

    Simulated and designed GaN/MOSFET and NCP1395 controller based MHz range LLC resonant converter – Vin=350V to 410V, Vout/Pout=24V/600W. Tested different high frequency magnetics and wrote detailed report.

    Designed GaN FETs and IR1155 based bridge-less totem pole PFC – Vinac=85V to 265V, Vout/Pout=400V/800W.

    Worked on designing active reset and clamp flyback converter - Vinac=85V to 265V, Vout/Pout=5V/15W

    Designed snubbers and wrote internal application note, “Turn-off snubbers for GaN transistors”.

    Assisted customers in evaluation and implementation of GaN transistors.


    09/2012 – 12/2012 (CONTRACT)

    PANACIS, Canada

    Design of Battery Management Systems

    Electrical Design Engineer

    Worked on simulation and design of analog and power electronic converters for Battery Management Systems.

    07/2011 – 06/2012


    Development of Self-Employment Business

    Ontario Self-Employment Benefit Program Participant

    Completed the Ontario Self Employment Benefit Program – the activities included but were not limited to seminars attendance, business concept and business plan development, marketing, sales and monthly reports.


    11/2004 – 09/2010

    ROUTES ASTROENGINEERING (Bought by COM DEV in 04/2010), Canada

    Design of Aerospace Power Systems with Routes, and Worst Case Analysis (WCA) with COM DEV

    Senior Analog/Power Systems Design Engineer


    Performed analog circuitry, including class B amplifiers, WCA using PSPICE.


    Performed initial trade studies to choose means of energy transfer-direct vs. peak power trackers (PPT), battery capacity and chemistry, the power subsystems BUS voltage, and solar cells for generating the required power.

    Participated in writing the spacecraft battery design specification document for the battery pack subcontractor.

    Designed satellite power subsystem module which includes: boost based PPTs, Lithium-ion battery charge regulator, separation circuitry, multifunctional switches for switching the satellite loads, the loads shedding circuitry, and circuitry for managing the reaction wheels reverse energy.

    Designed flyback converter for generating auxiliary ±12V and +5V rails.

    Designed sun sensor I/F circuitry and flyback based shutter driver to protect the satellite optics from the sun.

    Implemented command and telemetry based on the serial peripheral interface (SPI) and a 12-bit ADC.

    Designed a circuitry for Pyro (EED) firing mechanism.

    Designed a solar array simulator for ground testing of the power subsystem.

    Performed WCA for some of the circuitries using MathCAD.

    Used PSPICE and National WEBENCH for simulating different circuitries.

    Wrote layout guidelines, test procedures and reports, and tested the designed hardware.

    Participated in multidisciplinary design review meetings and presented, at different stages, the work progress.

    Was involved in radiation testing of the designed hardware at TRIUMF laboratory in Vancouver.

    Participated in writing the spacecraft level test procedures.



    Designed power supply module for satellite data storage unit using radiation hardened components.

    The design includes power supply modules and EMI filters (chosen of the shelf), multifunctional switches, inrush current control and input power rails transient protection circuitry.

    Implemented command and telemetry based on FPGA and a 12-bit A to D converter.

    Used PSPICE for simulating different circuitries.

    Performed WCA for some of the circuitries using MathCAD.

    Wrote layout guidelines, test procedures and reports, and participated in testing the flight hardware.

    Wrote EMC test procedure for the data storage unit according to MIL-STD-461.

    3/2003 – 11/2004



    Independent Sales Agent

    Marketed and sold natural gas to residential and commercial customers – sold the most contracts during one four month contest and was among the top performing agents in the Ottawa office.


    5/2000 – 10/2001

    Emerson Network POWER (Astec Power), Canada


    Power Supply Designer

    Designed power distribution panel (alarm card) input voltage 40-75V and current 65A.

    Worked on designing forward, voltage mode control, dc-to-dc switching power supply with an active clamp and reset technique, input 36V-60V, output 28V/14.4A, with an input power measurement using microcontroller PIC16F872 (redesign).

    Worked on designing forward, voltage mode control, dc-to-dc switching power supply with an active clamp and reset technique, coupled-output inductor and synchronous rectifiers, input 36V-60V, outputs 15V/0.25A +5V/3.5A and –5V/0.5A (redesign).

    Exploratory work on wide input-voltage-range 18V-56V, interleaved forward converter, output 26V/ 26.4A.

    Designed EMI filter and control circuitry for a 15W Point of Use Power Supply (PUPS).

    Component change recommendations to improve 2W dc-to-dc flyback converter efficiency.


    3/2000 – 5/2000

    Marconi Communications, Canada


    Power Supply Designer

    Current sharing improving, thermal test and troubleshooting of parallel connected current mode control ac-to-dc switching power supplies, input 120/220V, 60Hz/50Hz, and output 54.8V/3.3A.


    1/1988 – 10/1999

    EI Holding Co., Serbia (Yugoslavia)


    Development and Design Electronics Engineer


    Designed flyback, duty ratio control, dc-to-dc SMPS, input 16.8 - 31.2V, output 12V, 1A.

    Designed flyback, duty ratio control, ac-to-dc SMPS, input 220V, 50Hz, output 100 to 1000V, 20mA.

    Designed forward, current mode control, dc-to-dc SMPS input 16.8-31.2V, output 12V/5A.

    Worked on designing forward, duty ratio control, ac-to-dc SMPS, input 220V/50Hz, and output 0-100V/0-1A.


    Synthesized dc motor speed controller by application of theory of variable structure systems and Luenberger observer including H-bridge of 36V, 7A for four-quadrant operation of the dc servo drive. Portescap 4N63 ironless rotor dc motor was used. The created system is implemented in a simulator that simulates speed of a train wheel during braking.

    Designed PI controller for speed control of dc motor. The IC L298 is used as an output stage.

    Simulated Utkin’s sliding mode speed controller algorithm for induction motor.

    Worked on developing and designing “soft start” and “soft stop” for 0.75kW induction motor using the Intel 8051 microcontroller.

    Worked on induction motor speed control by varying stator frequency and voltage using IGBT modules as driving stage.

    Worked on induction motor vector control – field orientation control type.


    Designed recording equipment for virtual reality fighting simulator by using microprocessor CDP1802.

    Designed circuitry that generates sinusoidal signal (frequency 100Hz, amplitude 0 – 5V), and measures amplitude of an input sinusoidal signal and phase shift between the generated and the input signal, using the microprocessor CDP1802, A/D AD574 and D/A PM7542 converter including assembly code.


    Designed temperature controller for air conditioner using the IC TCA785.

    Designed Hall-effect based digital speed sensor as replacement for a tachogenerator in trains.




    C. Milosavljevic, P. Stoimenov, “Synthesis of dc-motor variable structure speed controller

    J. Aut. Control, vol. 6, pp. 47-58, University of Belgrade, Serbia (Yugoslavia).



    Discrete Optimal Control by using Discrete Calculus of Variations – Worked on determining the natural border conditions for solving Discrete Lagrange Equation.

    1/1987 – 11/1987

    FACULTY of ELECTRONICS ENGINEERING, University of Nis, Serbia (Yugoslavia)


    Undergraduate Research Assistant – Developed Projects:

    “Chemical Process pH Value Control”. The Smith predictor was used due to time delay in the process.

    “Soldering Iron PWM Temperature Regulator”. The regulator was based on IC UC555 and a thyristor.



    12/1998 Master Degree in Electrical Science, University of Nis, Serbia (Yugoslavia) - Nostrificated in Canada.

    11/1987 Bachelor Degree in Electronic Engineering, University of Nis, Serbia (Yugoslavia) - Nostrificated in Canada.



    25/07/2011 – 28/07/2011

    Power Supply Design Lab Workshop – Hosted by “Ridley Engineering”, Atlanta, USA.

    20/05/2008 – 21/05/2008

    Electronic Components Space Radiation Effects Seminar – Hosted by “MDA Corporation”, Toronto, Canada.

    25/04/2006 – 27/04/2006

    Space Power System Design Course/Workshop - Hosted by “Aerospace Corporation”, Manhattan Beach, USA.


    Introduction to SPICE Workshop – Hosted by EI Holding Co.”, Serbia (Yugoslavia).



    1/2012 – 4/2012

    Embedded Systems (ELN 5644), Algonquin College, Canada.

    1/2011 – 4/2011

    Computer Methodologies for Digital/RF Design (ELEC 5402) (Audited), Carleton University, Canada.

    1/2010 – 4/2010

    Introduction to Project Management (MGT 5164), Algonquin College, Canada.

    9/2009 – 12/2009

    Signal Processing Electronics (ELEC 5808) (Audited), Carleton University, Canada.

    1/2007 – 4/2007

    Simulation and Optimization of Electronic Circuits (ELEC 5506), Carleton University, Canada.

    1/2006 – 4/2006

    Advanced Linear Systems (SYSC 5502), Carleton University, Canada.

    1/2005 – 4/2005

    Adaptive and Learning Systems (SYSC 5401), Carleton University, Canada.

    10/2001 – 3/2003 (SELF-STUDY)

    Steady state and small signal ac switch mode converter analysis and modeling, including transfer functions and controller design.

    Conducted EMI issues, input EMI filter design and its effect on converter transfer functions.

    1/2001 – 4/2001

    Computer Methods for Analysis and Design of Communications and VLSI Circuits (ELEC 5508), Carleton University, Canada.



    Hardware: PC, micro controllers PIC16F872 and Intel 8051.


    Programming languages: ASSEMBLER, C.

    Operating systems: WINDOWS.


    1996 – PRESENT - The Institute of Electrical and Electronics Engineers, United States.

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