SOPHAK TOL

acy8u7@r.postjobfree.com

ELECTRICAL ENGINEER

Accomplished, proactive engineer with over 17 years of significant experience in designs and tests electrical, RF, microwave, fiber optics, analog, digital, and power supply circuits. Completed project with a track record of timelines, on budget, and exceeded specifications. Work effectively as well in a team as an individual. I am ethical, flexible, dependable, frontrunner, and self-motivated. Core Competencies and Professional Strengths:

• Lean Six Sigma Black Belt • Circuit Designs and Specifications • Tests and Analysis

• Process Improvements • Ethic and Safety Compliances • Circuit Layouts

• Project Coordination • Troubleshooting and Solutions • Sustaining Engineer

• Standard Compliances • Research and Development • System Integrations Career Highlights:

• Expertise in RF, electrical, electronic, harness, system, and circuit designs. Generate specifications and evaluate requirements. Design, simulate, and layout RF, microwave, and electrical circuits from system down to schematic to component levels. Test, analyze issues, and find solutions. Serve as point of contact for technical supports.

• Well-versed with RF, analog, DC, BJT, JFET, CMOS, MOSFET semiconductors, LC, RC, and RLC circuits, amplifiers, sensors, instrumentations, and control circuitry.

• Conduct trade studies and develop Tx/Rx circuits for aircraft radar and communication systems. Work with broadband RF and microwave from DC to 60GHz, mix signals, analog, motor control, sensor, DC-DC, and linear supply circuits.

• Utilize microelectronics, SMT, strip line, multilayers, differential pairs, coplanar, and micro strip technologies.

• Coordinate projects and lead to completion on budget and timeline. Prepare price proposal for new projects.

• Applied Six Sigma on Tx sub-system built and STE integration to improving schedule.

• Develop fiber optic systems to replace coaxial system for size and weight reduction.

• Redesign standby power supply controlled circuits, reduce battery deterioration and outages, result diminishing maintenance costs.

EDUCATION:

New Horizons CLC 1900 South State College Boulevard, Anaheim, California 92806 Certified Lean Six Sigma Black Belt and Project Management Professional Training, January 2012 Lean Six Sigma, Communication, Cost, Human Resource, Integration, Procurement, Quality, Risk, Scope, and Time. Purdue University Indianapolis, 420 University Boulevard, Indianapolis, Indiana 46202 Bachelor of Science in Electrical Engineering, May 1998 RF Communications, Circuit Analysis, Biomedical Instrumentation, Modeling, Feedback Analysis, Microprocessor, Interface Systems, Thermodynamics, Amplifiers, Analog, Digital Logic, Economics, and Ethics. Indiana Vocational Technical College, 1331 East Washington Street Indianapolis, Indiana 46202 Associate of Science in Electronic Technology, Nov 1986 BJT, JFET, CMOS, MOSFET, LC, RC, and RLC, AM, FM, TV, PS, Amplifiers, Sensors, and Control Circuitry.

SOFTWARE TOOLS EXPERIENCE:

Microwave Office, ADS, Momentum, Cadence, allegro, Pad, Orcad, Pspice, Protel, Mentorgraphics, Labview, Microsoft Project, Visio, Word, Power Point, Excel, Matlab, C, Mathcad, PLC, and SPC. WORK EXPERIENCE:

Smart Electronics & Assemblies 714-***-**** 2000 West Corporate Way, Anaheim, California 92801 RF System Engineer, December 2014 to present

Designed TFA for Harris’s Radio Ancillary proposal. Evaluated and recommended size reduction using microelectronics method for Harris’s Disruptor SRx design. Designed Channels Multiplexer prototype for Boeing’s Next Generation Radio proposal. Designed RF Tx/Rx for RT Logic’s Small Unmanned Air Craft System proposal. Designed servo control and power supply for iAccess’s motor controller. Designed Test System for Raytheon’s Hyfiers proposal. Designed DC-DC with microelectronics for e2V’s space application proposal. Complied with MIL-PRF-38534. Evaluated NPI with microelectronics for Remec’s 38GHz Potomac and 60GHz Flex4G-3000 proposal.

Assumed a project manager, initiated program schedule to develop a test system for EKV burn-in for RMS and MDA customers. Generated and assigned project tasks, oversaw team activities, and conducted status meetings. Prepared and conducted preliminary design review lead to critical design review and to test readiness review. Developed and integrated hardware systems to meet customer requirements. Focused on analyzing and eliciting customer needs and required functionality early in the development cycle, documenting requirements and then proceeding with design synthesis and system validation while considering the system lifecycle. Analyzed and implemented strategies to select relevant hardware/software, components, technologies, and platform for which ensured that the system integration conformed to appropriate interconnects, applications, and standards. Supported project execution and implementation by actively and technical participating and by providing and executing solutions to problems and/or roadblocks. Technical frontrunner, worked closely with sale, prepared, evaluated, and submitted price proposals for new project bits. Served as technical point of contact, introduced customer new products, supported existing products, prepared and conducted technical trade-show. Reviewed RFQ and supplier selections. Advanced Photonic Integrated Circuits 310-***-**** 5800 Uplander Way, Culver City, California 90230 Electrical Engineer, August 2012 to May 2014

Planned, conducted trade studies, and developed new RF transceiver systems for photonic communication and radar applications. Simulated and drafted RF and microwave circuits, LNAs, front-end feeds, matching networks, passive low-pass, high-pass, and band-pass filters using LC networks with ADS and Harmonic Balance. Simulated and drafted analog, active low-pass, high-pass, and band-pass filters using opamps, and power supply circuits with Cadence/Pspice. Layout RF and microwave circuits with Momentum; layout analog and power supply circuits with Allegro PCB editor. Design DC-DC using Buck topology with voltage mode control. Lead and hands-on designed circuits from concept to schematic to PCB layout, packaging, and system integration. Created system status circuits for initial health check, power, fail/safe, and redundant links monitor. Worked with optical direct-modulator (Electro-Absorption) and external-modulator (Mac-Zehnder). Utilized photo detector

(Unitraveling Carrier), FR4, and Rogers PCB materials. Developed multi-channels RF broadband (DC-40GHz) and high speed (10Mbps-40Gbps) digital transceivers for optical link LRDE project. Produced Ethernet, HF, and APR-39 fiber link systems and demonstrated on aircraft at NAVAIR. Interface UART, RS232, RS485, USB, and bulkhead connectors, cables and wires routing.

Generated low noise RF to fiber links system which operated at 100KHz-20GHz for ALQ-210/217 (Electronic Counter Measured) system for Road-Hawk project for an application of replacing existing coaxial cables with fiber cables, resulted a massive size and weigh reductions. Presented critical design review (CDR). Applied MIL-810, DO-254, DO-160F, and ISO-9001 requirements when working with product specifications and suppliers. Supported mechanical engineers, drafting, layout, packaging, and assembly for products and systems built. Raytheon Company 310-***-**** 2000 East Imperial Highway, El Segundo, California 90245 Sr. Electrical Engineer, December 2003 to September 2011 Traveled to Forest, Mississippi, solved 3 stalled major aircraft radar (B2, F/A18, F/A15) productions by coordinating a group of engineers to reorganize hundreds of thousands of COTS parts due to erroneous types, mistaken tolerances, and incorrect values. Accomplished the flow of productions in 5 days and completed the project 2 days advanced of schedule. Created, analyzed, and tested RF microwave circuits. Upgraded special test equipment (STE) and interface test adapter (ITA). Wrote project proposal and coordinated team members to implementing the projects. Assumed engineer authority roll, to produce Beamformer Plate (BFP) system and support high power plate (HPP) for Bigflat radar program. Tested AESA Tx/Rx radar modules. Hands-on design and simulate analog, power supply, RF, microwave, wireless, antenna, matching, filter, and front-end circuits. Worked with MOSFET, CMOS, BJT, SiGe, and GaAs devices. Developed complete life-cycle; carried from system concepts to assembly built and proof of design (POD).

Designed and simulated RF and microwave circuits, LNAs, antennas, front-end feeds, matching networks, passive low-pass, high-pass, and band-pass filters using L and Pi networks with ADS and Harmonic Balance. Created analog/digital controlled circuits with discrete gates, for pulse modulation, mechanical movement, motor control, sensor, signal interface, and liquid/fan cooling systems. Design DC-DC converter using continuous conduction mode

(CCM) Buck and boost topologies with voltage and current modes controls. Apply Six Sigma to Tx sub-system, EMI, and BFP tests, saved 2 weeks and cut the work force cost by half. Qualified electromagnetic interference (EMI), vibration, and phase noise limitations. Developed custom components for unavailable COTS included mixer, PA, phase shifter, PLL, and VCO. Interface UART, RS232, RS485, USB, and bulkhead connectors, cables and wires routing. Assure applicable compliances met when working with product specifications and the suppliers. Supported mechanical engineers, drafting, layout, packaging, and assembly for products and systems built.

Metro Laser Inc. (Contracted) 949-***-**** 2572 White Road, Irvine, California 92614 Electrical Engineer, September 2002 to November 2003 Generated, implemented, and tested Vibrometers, PLL demodulators, optical receivers, digital and analog VCO controlled circuits. Integrated long range multi-beam laser system, resulted space saving. Tyco Electronics (Contracted) 310-***-**** 1742 Crenshaw Boulevard, Torrance, California 90501 Electrical Engineer, Sep 2001 to Sep 2002

Drafted, realized with micro-strip, and evaluated, CMOS narrowband PA and test fixture at L (390-1550MHz) and S

(1.5-5.2GHz) bands for radars, avionic, and wireless products. C-Cor.Net (Contracted) 408-***-**** 3515 Monroe Street, Santa Clara, California 95051 Sr. Product Engineer, Aug 2000 to Sep 2001

Designed and built 1310nm and 1550nm fiber optics transceivers. Evaluated scopes and proposed new procedures. Analyzed and structured production processes to improving delivery schedules. SOPHAK TOL

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Magnetic Instrumentation 317-***-**** 8431 Castlewood Drive, Indianapolis, Indiana 46250 Electrical Engineer, Aug 1998 to Aug 2000

Planned and constructed custom-made magnetizer systems, flux meters, and turn analyzers. Developed test fixture control systems with microprocessor and Alan Bradley’s PLC. Layout wire routing, USB, RS232, RS485, bulkhead connectors, and din-rail components for the selected enclosure. Solved EMI issues, resulted increasing sales. Wrote operational manuals and test documentations.

Time Warner Cable 317-***-**** 3030 Roosevelt Ave. Indianapolis, Indiana 46218 Sustaining Engineer, Apr 1988 to Aug 1998

Generated, maintained, and upgraded 1310 and 1550 fiber optic transceivers and RF broadband amplifier systems. Troubleshot and advanced RF modulators, processors, combines, mixers, splitters, converters, receivers, and RF distribution network. Performed link budget and trade-off for new built. Planned and composed video and audio closed-loop circuitry for city offices and county courts. Supervised staff in equipment repair department. Modified standby power supply controlled circuits with new CMOS technology and implemented temperature control to reduce power outage by 50%.

RECOGNITIONS:

• Achievement Award for Ongoing Commitment To Outstanding Job Performance; Raytheon, 2011

• Achievement Award for Special Contributions Toward Meeting Company Goals; SAS, 2010

• Spotlight Award for Team Excellence That Performed To Support Company Goals; Raytheon, 2006

• Achievement Award for Exceptional Efforts That Go Above And Beyond Job Requirements; Raytheon, 2005

• Multiple Total Quality Service awards. Time Warner Cable, 1994-1998

• Reach For The Goal 80,800 Customers Silver Award; Time Warner Cable, 1988

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