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Thomas Shafer Solutions-oriented RF and analog designer with a broad range of experience in system, board-level, telecom, medical and military applications. Track record of meeting complex and demanding design challenges for RF and analog processing applications in a timely manner Have managed designs from concept to pilot production. Participated in, or managed multidisciplinary design efforts applying my skills with other engineers’ talents in embedded development, operating systems, digital hardware, industrial design, mechanical design, and user interface. Able to work independently or in a team environment Well-organized; quality-oriented; excellent written and verbal communication Can mentor and supervise junior engineers and technicians
Major Design Accomplishments Low-cost location and direction-finding system with a range capability up to 1 mile. Designed around CC2510 radio (2400-2500 MHz) and 8510 MCU. Utilizes compact directional antenna with RF front-end electronics, and a simple user interface. Ultrasound driver and receiver designed for a medical implant which is used for measuring cardiac output and transmitting wireless telemetry to external monitor. A challenging implementation of high gain-bandwidth amplifiers at 10MHz, and magnetic antennas. Fully-compliant dual-band 900MHz and 1800MHz GSM “pico” base station radio on a 4 in. x 5 in. double-sided PCBA Part of a team that designed hand-held signal integrity tester for broadband cable installers. Design was based around a Broadcom modem with additional RF circuitry, with a Linux OS running on an ARM9 and a graphics-intensive user interface. A 900 MHz beam-former used for an electronic phased array in CDMA base stations. Battery-less and wireless remote control which utilized the ISO15963 RFID protocol. Custom-designed the antennas and complete system using a Texas Instruments reader engine. 1800 MHz radio used for the development of a precursor WiMax system
Experienced in the following product-development tasks: Concept development and functional partitioning Mathematical analysis and simulation (Spice, RF simulation tools, Excel) Understanding / modifying protocols to meet specific needs Component selection Prototype design and test Schematic Capture (Orcad, ExpressSCH) PCB Layout (PowerPCB, ExpressPCB) Generate design documentation (schematics, PCB layout, bill of materials, test plans and reports) for hand-off to production FCC, CE compliance testing
Professional Experience Consultant, Nasontek Services, SP 2007 – Present Client: Alpzite Designed a low-cost location and direction-finding device Client: Cardiometrix Designed a prototype medical ultrasound driver and receiver system Synapse Product Development, LLC 2005 – 2007 Part of team which designed a hand-held signal analyzer for broadband cable installers Designed a battery-less, wireless remote control based off RFID technology
Field Applications Engineer, Avnet Electronics Marketing 2004 – 2005 Radioframe Networks 2002 – 2004 Broadstorm Telecommunications 2000 – 2002 Metawave Communications 1996 – 2000 Augat Communications 1993 – 1996 Boeing 1988 – 1993 United States Air Force 1983 – 1987 Education and Credentials MS, Electrical Engineering Wright State University – Dayton, Ohio BS, Electrical Engineering Lafayette College – Easton, Pennsylvania Officer Commission, USAF Lackland AFB, San Antonio, Texas Publications & Patents “Electronically Steerable Antennas and Their Application To Airborne Radars”, National Aerospace Electronics Conference, 1986 Design Guideline - PCB Design Rules for RF circuitry “Multi-Layer Switched-Line Phase Shifter” “Self-Calibration Architecture For A Direct-Conversion Transceiver” – Pending References Available On Request | 
