RF Analog Hardware Design Engineer
Resume:
CHARLES ABRAHAM
Fulton, MD 20759
E-mail: *****************@*****.***
BACKGROUND
I am a Senior RF, Analog and hardware Design Engineer and Technical Manager with over 20 years of experience, interested in finding a challenging position as an RF, Microwave, Analog, Hardware and/or software. I am an efficient and an accomplished Electronics Design and Manager professional, highly skilled in technical development, circuit design, noise reduction, testing, and software development. I possess certifications, strong experience and am known as an effective problem solver who consistently follows through and is proficient at identifying and solving issues at the final escalation point. I believe that my experience and knowledge in these fields would be of great benefit to you in efficiently and successfully pursuing any hardware or software design needs that you may have. My career has been largely composed of hardware, software, RF, Microwave and analog circuit design, development management, modeling and performance analysis through various measurements, design optimizations, board layout and testing. I have demonstrated my work at industry-leading companies such as Northrop Grumman, Intelligent Automation, Richardson Electronics and Macom. My strength is being able to take a scientist's idea and develop it into a practical solution. For example, at Intelligent Automation I successfully designed and developed a unique wireless synchronization modem which synchronized the CPE modems to the master unit within less than 1 nanosecond.
EXPERIENCE
Senior RF Design Engineer
Stanley Black and Decker, May 2016 - recent;
Analyzing and testing several different Real Time Location System products and designing and developing new RF communication products
Senior RF Design Engineer and Technical Manager
Richardson Electronics, December 2013 – May 2016;
Successfully managed to develop several project including software development
Successfully designed and developed RF, digital hardware design (including FPGA), filters and board layout with Genesys and Analog component level circuits for 5Mhz to 3Ghz range, including GaN amplifier.
Successfully designed and debugged projects including 6-75KW tube amplifiers, waveguide circuits and waveguide tuners, waveguide windows designs, development and optimization for production at 915 MHz and at 2.45 Ghz.
Successfully Designed and developed matching box for 2KW amplifier
Successfully designed and developed 1KW amplifier for 2-30Mhz using Cadence for schematics and PADS for board layout
Senior Analog and RF Design, Development and Test Engineer Contractor
Northrop Grumman, Linthicum, MD, April 2013 – November 2013;
Successfully Designed, re-designed hardware, developed software, board layout and tested number of analog circuits, filters with Genesys that was built for supercomputer project.
Successfully designed hardware and significantly reduced noise at the receiver thus improved signal quality, such that finally 100% of the data was received without error. Used RF circuit modeling with ADS, Cadence, PADS and HFSS, including schematics design and board layout.
Senior Technical Manager and software and hardware Design Engineer Consultant
Consultant, November 2011 – March 2013;
Consulted to SoleNet, Inc., to PlugNet Ltd. and to Coherent, Inc
Successfully managed and designed software development with JAVA, hardware board layout, schematics and developed RF and Analog component level circuits using Cadence for schematics and PADS for board layout
Successfully Tested and debugged the RF and Analog circuit boards for communication modems using RF equipment, Spectrum Analyzer, Networks Analyzer, and Oscilloscope. Schematics Capture Cadence ORCAD, board Layout PADS, PSPICE, and Genesys design tools were used.
Some of the designs were defense and some of them were space related.
Successfully Designed board layout for RF and Analog circuit with very fast transmitter driver for photo diode.
Most project required data acquisition experience, A/D experience, multiplexing systems and analog filter designs. Experienced with RF, microwave circuits and antenna test characterization and interfacing.
Field Application Engineer
Avnet, Columbia, MD, May 2012 – December 2012;
Helped design electronic circuits and identify IC components for circuit boards to engineers of several companies. Also researched and recommended the right electronic parts to several customers based on their project.
Senior Technical Lead Engineer and RF, Analog Design and Test Engineer
Intelligent Automation, Inc., Rockville, MD, March 2010 – Oct 2011;
Funded by government grants and based on requirements, successfully designed and developed from abstract ideas a number of unique and wireless devices including GSM, LTE based system design and implementation with G3 and G4 protocol, frequency bands and modulation.
Another very successful and unique key project was developed for synchronizing unparalleled wireless modems together with less than 1 nano seconds delay.
This work included system design, software design, hardware design (including XILINX FPGA), circuit and schematics design with Cadence, PADS, filters design with Genesys, selecting the right parts, making a correct board layout and testing and debugging the final prototypes. Included EMI and EMC testing.
Some of the designs were defense and some of them were space related.
Senior Technical Manager and hardware Design Engineer Consultant
Consultant, June 2009 – March 2010;
Consulted to PluNet Ltd. by designing and developing software, hardware, (including FPGA) and Analog component level circuits using Cadence for schematics and PADS for board layout for 5 Mhz to 3Ghz range including 2.4 Ghz Wi-Fi, LTE, Land Mobile Radio (LMR) and space applications.
Tested and debugged RF and Analog circuit boards (EMI and EMC also included) and debugged the entire digitally signal processed communication modem.
Tested Wi-Fi product, its protocols and did testing of the same with different routers. The RF design and board layout was done with Genesys (including schematic, linear simulation, optimization, statistical, layout, and data display capabilities, RF system architecture, circuit synthesis, nonlinear circuit, Synthesis modules for filters, matching networks, oscillators, mixers, transmission lines, equalizers, PLL and signal control).
Senior RF and Analog Design, Test and Principle Engineer
MA-COM Cobham, Hunt Valley, MD, May 2008 – May 2009;
Successfully re-designed several wireless products for improved performance, lower cost and smaller size using Cadence for schematics and PADS for board layout.
Duties included analyzing with Agilent Advanced Design System (ADS) and filters with Genesys, designing, prototyping, testing (EMI and EMC also included) and developing RF, Microwave, hardware design (including XILINX FPGA), analog and MMIC circuit designs with Cadence Virtuoso, schematic simulation, circuit layout, electro-magnetic simulation, physical verification using HFSS software tools for existing and new wireless receiver products from 1 Mhz to 40 Ghz frequency ranges.
These included selection of the right low noise amplifier, mixer, gain block amplifier, filters, synthesizers, lumped element, microstrip filter, matching circuits, broadband mixers, IC packages components, cascade analysis and tolerance analysis for low noise figure, for high IP2 and high IP3.
As Project Engineer, set performance standards for tasks and roles of team members and provided ongoing feedback about their performance.
Kept all stakeholders informed about project progress. Presented technical solutions in a non-technical way to key stakeholders to reach consensus.
Senior RF and Analog Design and Test Engineer Consultant
PlugNet Ltd, Clarksville, MD, October 2007 – April 2008;
Successfully designed and developed Wireless RF LTE and Analog circuit boards with board layout in the 900 Mhz to 4 Ghz range, including filters and microwave designs with Genesys (including schematic with Cadence, linear simulation, optimization, statistical, board layout with PADS, and data display capabilities, RF system architecture, circuit synthesis, nonlinear circuit, Synthesis modules for filters, matching networks, oscillators, mixers, transmission lines, equalizers, PLL and signal control).
Senior RF and Analog Design and Test Engineer Contractor
System Planning Corporation, Arlington, VA, August 2006 – September, 2007;
Successfully re-designed and re-developed several circuit boards with Cadence, PADS and designed filters with Genesys with new board layout to significantly reduce the noise level.
Cleaned up numerous design and development issues on Pulsed Radar System including the correct way of grounding using my extensive experience to reduce noise.
Also conducted extensive EMI and EMC testing.
Some of the designs were defense and some of them were space related.
Senior Technical Manager, Hardware and DSP Design, Test Engineer
Wire21, Inc., Burtonsville, MD, January 2000 – July 2006;
Successfully conducted RF, Analog and DSP design, development from 6 Mhz to 3.5 Ghz frequency ranges (VHF, UHF circuitry), patent developments, system and circuit design with Cadence, PADS, testing (EMI and EMC included)
Successfully integrated SCADA system
Designed filters with Genesys/Eagleware (including schematic, linear simulation, optimization, statistical, layout, and data display capabilities, RF system architecture, circuit synthesis, nonlinear circuit, Synthesis modules for filters, matching networks, oscillators, mixers, transmission lines, equalizers, PLL and signal control) and built prototypes for high speed power line carrier communications. Designed low noise RF receivers, custom LC filters and high wattage 100 W to 1KW amplifiers in the 900 Mhz to 2.4 Ghz range.
Successfully designed and developed very high speed power line modem and reduced the noise by about 20 dB. Developed unique technology with four new patent applications, including analog video signal processing, and digital signal processing for LAN applications over the AC power lines.
Developed communication device over the mid-voltage (11-33KV) power line and designed high voltage power supply. Responsibilities included arithmetic and logical unit (ALU) RF Optimization, designing analog and RF circuits, developing OFDM signal processing modulation with VHDL coding using ALTERA FPGA. Managed manufacturing the products, developed ASICS design and developed RF modules.
Used the internal program tracking system for all development programs. Techniques included error correction codes (in-coding, decoding), modification of synchronization protocols and Ethernet protocol.
Managed technologies include telecommunications, digital signal processing, software development (embedded, windows, & UNIX), and hardware development.
In addition, managed entire technical team on project. Prepared and tracked project schedule and budget.
Design Engineer Contractor
Motorola, Inc., Hanover, MD, February 1999 - December 1999;
UHF and VHF RF Land Mobile Radio (LMR) System design for secured voice communication for all US Embassies. Also defined and selected the best suited filters for each specific design.
Three dimensional electromagnetic simulation tools were also used.
Design Engineer Contractor
Prizm Advanced Communication Electronics, Inc., Elkridge, MD, September 1998 - January 1999;
Successfully re-designed, re-developed and tested multi-channel digital video,
Designed filters with Eagleware and Ethernet communication over optic fiber and reduced noise by about 20 dB. The old design noise level was so high that even the video monitor showed them.
Successfully eliminated the noise on the system by re-designing Analog circuits.
Test Engineer
Ericsson, Inc., Cellular Phone Division, Verification Group, Lynchburg, VA, June 1997 - August 1998;
Conducted testing, measurements, and verification for GSM based PCS, digital and analog cellular phones.
Labview was also used and ALU RF Optimization. Identified a number of design, parts, test station and documentation related problems.
Worked with the designers to correct the problems.
Design Engineer
ELCOM Technologies Corp., Malvern, PA, till May 1997;
Successfully conducted system, analog and RF circuit design, testing and prototyping for Company with products in development for high speed analog and digital communications for video, audio,
Designed filters with Eagleware, with discrete I/O and data using DSP, A/D, D/A converters and hardware design with FPGA.
Responsibilities included on time product development using team efforts and overseeing all the contracting and manufacturing arrangements.
ALU RF Optimization were also used.
Qualified analog devices into low cost high volume products.
Developed EZLAN, EZTV, and EZPHONE products.
Company received 2 Ben Franklin Technology Awards and the Most Innovative Product Award.
EDUCATION
Bachelor of Science in Electrical Engineering.
University of Pennsylvania, Moore School of Electrical Engineering.
Computer Skills: Language Proficiency: PASCAL, "C", Assembly, Labview
Operating Systems: Windows, MS-DOS, UNIX
Hardware: IBM PC, Mac, VAX 8650
Design Tools: Pspice, Orcad, Eagleware/Genesys, Tango, MATLAB, PADS
TECHNICAL PAPERS
A Novel High Speed PLC Communication Modem, IEEE/PES
Customer Premises Layouts demonstration the use of a single common system for video, voice and data distribution in single homes, multiple dwellings and commercial facilities, TIA/TR41.5
Filed 20 U.S. and international patent applications. 13 U.S. and several EPO patents have been issued.
PERSONAL
U.S.A. Citizen, IEEE member, TIA and T1E1 standard committee member. Hobbies and activities include soccer, swimming, travel and chess.
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