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CV: Consultant, RF hardware, electrical
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Date Submitted: Last Modified: Current job: Employment Term: Job location: Date available: Industry: KeywordsSenior hardware electronic & RF Engineer with 10 + years experience developing wireless technologies and electronics for commercia l and industrial markets. Consultant – designer – second opinion – system arc hitect Experience working remotely across several time zon es. S KILLS • Consultant and architect of RF wireless hardware an d embedded systems. System design from concept to product. RF applications with ASIC syste m-on-chip, firmware. • Simulations, verification, tolerance analysis, ther mal issues, troubleshooting. • Hardware: VNA Vector Network Analyzer, VSA vector system anal yzer, Spectrum Analyzer, Signal Generator, Noise Figure meter, Agilent 5500 phase noise analyzer system, R&S, Anritsu, HP Field Fox ... • Tools: PowerSmith© (my own simulation program), MWO Microw ave Office, Smith, Eagleware, LTSpice, RFSim, electromagnetic simulators, Sonnet, Tline, Microwave Studio, ADS, HFSS • Software verification tools : Logiscope, Geode. excellent • CAD: PADS, OrCAD, Altium, Mentor Graphics, KiCad. (best to worst) • Programming : C, low level embedded graphics, Borland Pascal, Pow er Basic, Fortran • OS: Windows XP, PCLinuxos, IBM UNIX 4.2, VxWorks, Win7 • Software development in: PSoC Designer, IAR, Code Warrior, CrossWorks P ROFESSIONAL E XPERIENCE DAT C ONSULTING C ONSORTIUM with A EROSPACE 7/ 2016 – Present Consultant, design for Aerospace applications • Designed different NO2 gas sensors with potentiosta t • Designed spacecraft charging hardware simulator. A High Voltage device for ESA proposal • Designed ultrasound range finder for UAV with PsoC • Cooperation on technical and business proposals for ESA • Consulting, troubleshooting, debugging, architectur e change, locating bottlenecks • Helped to resurrect RF Finder with FFTs on FPGA, cl eaned analog noise sources, switched power supplies, ADCs, buffers, aliasing filters, added AD C sampling tree. Power partitioned boards. • R&D troubleshooting of 8 receivers. 2.4GHz LNA to I F, frequency synthesizers • Built antenna phased array for 2.4GHz • Designed phase shifters for system phase calibratio n (10.7MHz, 350MHz, 2.4GHz) • Simulations, field tests. D AVID T OMANEK 2 Sensor Switch – Acuity Brands Lighting, Wallingford , CT 7/2014 – 2016 Engineer - Design – Principal The CT division was responsible for R&D of remote c ontrols for LED smart lighting. Different tasks were required. Designed PCD power-dimmer for 120/27 7V/8A/60Hz. Resolved safety and thermal issues on existing products. Worst case analysis. S olved EMI problems with PIR-occupancy sensors. • Helped with the wireless part of the 2.4GHz Bluetoo th Low Energy lighting control • Evaluated battery-less 925MHz remote lighting contr ol • Wrote Engineering reports • Put together a system for measurement of existing A C/DC converters to check compliance with UL and FCC/EMI certification for conducted and radi ated emissions. EMI Spectrum analyzer, shielded setup, DC to 24GHz, 120V to 277V. Helpless products were separated • Provided sensitivity analysis of PIR sensors. Built the PIR tester prototype • Provided ESD-gun immunity measurements for UL, and reliability analysis, failure analysis, FMEA • Wrote msp430 firmware, when short of resources • Fixed measurement instruments out of order, fixed 7 years expired calibration • The Connecticut division moved to Mexico DAT C ONSULTING C ONS . USA, Toronto, or Europe 2007 – 201 4 Consultant, designer • Consultant for system and RF Architecture. US and E U projects. • Architect of container tracking system with mesh ne twork, GPRS, GPS, Iridium, for ocean vessels (Slovenia). Built antennas radiating through the me tal container. • Background research of mesh networks with ARM proce ssor for smart-grid • Worked on 2.4GHz antennas for ZigBee smart-grid mes h network modules • Cooperated on design of 2.4 GHz ZigBee SEP2.0 for s mart-grid. • Cooperated on ZigBee wireless thermostat with UrEle ctronics.com, first generation. (EPRI, PG&E, Edison San Diego, ICM Controls, Michigan Power) • Designed different sensor systems with PSoC micro-c ontroller • Background research and translation of smart-grid p apers from MIT, Harvard; invited lectures • Designed palmtop L-C meter with PSoC controller. 1n H/0.01pF resolution • Designed 150MHz frequency synthesizer controlled by PSoC uController • Designed miniature PCBs for SoundChip.ch (Swiss) audio devices • Designed palmtop spectrum analyzer for UrElectronic s, EPRI.org • Redesigned DC/DC converters for Jablotron’s failed digital Photo Album . 92% efficiency • Developed wireless security system products with Jablotron , capacitive touch sensors, proximity sensors, 925/868MHz antennas, and remote terminal. Modular concept. Motia Inc. Pasadena, CA 2004 – 2007 Principal RF Design Engineer Motia was a fabless chip company, focused to design MIMO chips with their own phasing engine. • Redesigned failed MIMO beam-forming system for WiFi . System used phased-array antennas. • Redesigned LNAs, rebuilt the 5 GHz synthesizer, pow er supplies, and 2.4GHz PA • Deployed fully functional system • Worked on FCC certification UR Electronics, Pleasanton, CA 2 003 – 2004 RF Design Engineer, contract D AVID T OMANEK 3 Asked to come over, and help to make at least one s ystem working. • Characterized and debugged the 900MHz FSK transceiv er and algorithms for telemetry • Helped with system architecture, timing, noise canc ellation algorithms, coordinated DSP • The system used Cypress PSoC microcontroller and Mi cro Linear Corp. radio chip • Parametric measurements of mobile communications de vices, field test Texas Instruments Inc. Santa Rosa, CA 2002 – 2003 RF Design Engineer The division designed WiFi chip. The focus was chip debugging, and to provide reference product design for OEM. • Designed portfolio of WiFi computer communication b oards • Developed specifications for new WiFi chipsets, and supporting microwave circuitry • Debugged newly developed silicon from Texas • Integrated Ti’s baseband silicon chip with radio ch ipset from Radia Inc. • Designed USB2.0 WiFi card for 802.11b/g, went to pr oduction • Evaluated Radia Inc. WiFi chip-set for 802.11b/g/a, NETW1130GVF. • Helped with evaluation of wireless Card Bus card wi th Maxim WiFi chip • Designed dual band antenna 2.4/5 GHz, broadband 5GH z antenna, patent pending • Provided FCC certification support, measurements in anechoic chamber. • Proposed the Submit Documentation Feedback button. This is used on corp. level till today. ewd ® Embedded Wireless Devices Inc. Pleasanton, CA 1999 – 2002 Sr. Lead Scientist, RF & Wireless group manager EWD was a fabless silicon chip company, focused to multimedia micro-controller design and its applications. The work was focused to provide solid RF design, and work together with the software department. • Developed RF reference designs for 2.4GHz band WDCT telephony headsets, Bluetooth • Developed reference design for 2.4 GHz 27dBm handse t with Infineon chipset • Designed diversity antenna system for 2.4 GHz band (6.25dB gain). Range 0.8 mile. • Developed RF handset reference design for 2.4GHz wi th National Semiconductor chipset • Designed 1.2GHz VCO. FCC certification support up to 25GHz • Investigated application of EWD’s devices into the CDMA, GSM, and WiFi network • Supported parametric measurements of mobile communi cations device, PER,BER Nortel Networks Inc. Winnipeg, MB, Canada 1998 – 1999 Manager of software verification & reliability, Q&A department • Asked to help set-up software and hardware Q&A depa rtment • Investigated and implemented software verification tools and strategies to test software payload • Successfully deployed software payload in 1998/ man ager • Invented reuse of 8kHz ATM system clock for T1/E1 f rame synchronization, and link failure management • Implemented the Markov model of fault tolerant arch itecture • Identified necessity of AGC implementation for QAM2 56 system • Hands-on ADUC812 microcontroller with 8052, LCD, in assembly Nortel Networks Inc. Winnipeg, MB, Canada 1997 – 1998 Senior RF Design Engineer, manager of software veri fication & reliability Ex BNI Broadband networks, bought by Nortel. BNI ma nufactured networking devices for
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