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 issues which arose, and worked closely with firmware development team to optimize overall system performance.• 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 customers throughout product life cycles.• 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. • Collaborated with other groups in Qorvo to institute process improvements for improved product quality and reduced costs.• Developed ESD models to accurately simulate stresses and solve immunity problems at the module and customer end application levels. Delivered presentations at the Qorvo 2015 and 2016 Tech Summits. • Developed an improved thermal model and measurement technique for 2-stage PAs, presented at the Qorvo 2017 Tech Summit. • Worked with Design Engineering to improve ruggedness and performance for multiple products.

• 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 into residential and commercial electricity meters.• 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.• Implemented Zigbee communications for smart thermostat in-home communications.• Designed and specified embedded and external 900MHz and 2.4GHz ISM band antennas. • Ran cellular TIS/ TRP performance and FCC certification testing for cellular modem and 900MHz ISM transceiver equipped AMI electricity meters.

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 management.• 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 network for silos, tri-band GSM commodity phone, body worn VHF transmitter for law enforcement, Bluetooth mouse, wireless game console, remote meter reader, and multi-channel streaming video link.• 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