Thomas B. Ellsworth Email & Phone Number

San Jose, CA, US

San Jose, California

• Next gen external device technical lead for Neuspera's next generation neuromodulation system
• Udating system architecture and device designs for improved performance and enhanced capabilities based upon Phase 1 clinical trial findings
• Continued training and development of R&D team members and others within the organization on device and system usage, troubleshooting, and repair/ rework
• Continued technical support of external and implanted devices for clinical trials

United States

• Technical lead for external device in Neuspera's wireless neuromodulation system. Revised RF and analog circuitry for improved performance, ruggedness and flexibility, oversaw EMC compliance testing and addressed any.
• Provided technical support and training for Production and Field Applications Engineers for Phase ! clinical trials
• Worked closely with Quality to address any device deficiencies which arose in the field
• Provided RF technical support for implanted device, including early stage debugging and performance optimization

Hillsboro, Oregon

• Applications Engineering Manager for cellular mobile devices PA/ RF front modules in Qorvo (formerly TriQuint). The team supported complex integrated GSM, W/CDMA and LTE/A modules during development and for external.
• Assembled and developed the team. Actively promoted teamwork, cross-functional training, career development, and individual recognition.
• Worked with Design, Marketing, and Sales to help define new product designs and ensure they met customers’ expectations for performance, features, and cost.
• Worked with Design, Product Engineering, Field Applications Engineering and Customer Quality to resolve product issues in the field.
• Provided onsite technical support for domestic and Asian customers in China, Korea, and Japan.
• Strengthened Qorvo’s working relationships with key customers.

• RF technical lead for high profile AMI (Automatic Meter Infrastructure) products with integrated cellular WAN and ISM band mesh network communications. Worked with team members to integrate 3rd party cellular modems.
• Generated system analysis and designed RF circuits for AMR (Automatic Meter Reading) systems operating in the 900MHz ISM band.
• Designed RF Antenna Isolation Boards utilizing distributed PCB structures to replace expensive discrete components for 900MHz ISM and cellular systems. Patent: US8305233
• Specified and validated 3rd party custom Front End Modules (FEMs) for 900MHz ISM and Zigbee transceivers, and worked with component suppliers to meet performance, cost, and scheduling requirements.
• Solved cellular modem receiver desense issues due to co-located ISM transmitters.
• Analyzed IEEE 802.15 4G standard for AMI systems, including modulation schemes, link budgets, receiver architectures, propagation environments, and RF protocols.

Research Triangle Park

• Formerly Stratex Networks, Microwave Communications Division of Harris Corporation
• Lead Engineer for hybrid PA module designs spanning 6 - 38GHz for PTP (point to point) terrestrial microwave links.
• Designed hybrid PHEMPT PAs and passive thin film microwave structures (filters, combiners/ splitters, couplers, RF detectors).
• Designed analog PA control circuits.
• RF technical lead for baseband pre-distortion PA linearization.

Youngsville, NC

• Worked in the newly formed Engineering Design Services group providing design services to customers promoting Flextronics' product development capabilities from inception through mass production.
• Lead RF Engineer for two wireless blood glucose and one BAL (blood alcohol level) body worn monitors. Responsibilities included RF circuit and systems design, performance testing, customer interfacing, and program.
• RF Engineer for remote sprinkler control system operating at 27MHz. Designed and verified all RF hardware, including OTA performance validation tests.
• Performed feasibility studies for a wide range of products and product enhancements, including a very high data rate terrestrial microwave link, harmonic radar golf ball locater, RFID system, remote inventory sensor.
• Mentored Engineers and Technicians on RF and analog theory, circuit design, test, and troubleshooting techniques.

• RF Team Lead and circuit designer for synthesizers and receivers for high volume CDMA, TDMA, and AMPS cellular handsets.

Bachelor Of Science - Bs, Electrical Engineering

M.S.E.E. Course Work

Analog Integrated Circuit Design and Electromagnetic Fields II