| Nivasonix LLC | System design and project management, plus detailed design for high-power RF drivers for fat
emulsification system. |
| Pacific Bioscience Laboratories (Clarisonic) | Induction-coupled power supply design for base charger. |
| Ultreo | Resonant ultrasound driver design to boost AA batteries to several watt bursts at several hundred volts,
also design reviews and consulting. |
| Verasonics | Design review for a portion of a high-end ultrasound imaging system. |
| Cardiometrix | Design review and consulting for implantable cardiac flow telemetry and measurement system. |
| Bainbridge Networks | Schematics, analysis, and design review for optically-controlled switch network
components; control loops, high voltage piezo motors, and digital logic. |
| Sonarwire, Inc. | New system design and original system maintenance and upgrades for down-hole sonar probe
used in brine, gas, and oil cavern surveying. High-power transmitter and low-noise receiver, 50 - 550 kHz system
frequencies, long-line comm link, plus microcontroller, switching power supplies, stepper motor control, etc.
Duties involved extensive documentation, simulation, and test, and small-production run of 20 systems. |
| Remec Wireless | Embedded 68HC908 controller hardware and firmware design and Windows GUI for control
of a microwave radio. Also telemetry link and hardware design review. |
| Vascusense | Developed prototype ultrasound transit time flow sensor for implanted vascular flow sensing,
capable of resolving 10 ps time shifts using a pulsed phase-locked loop technique. |
| Vectrad Networks | Embedded 68HC908 controller firmware design and Windows GUI for control of a
microwave radio. |
| Sonic Concepts | Contract for National Marine Fisheries Service to produce ultraminiature ultrasound implant
tags and receiver system for tracking salmon migration through hydroelectric plants. |
| TeraBeam Networks | System design of high-resolution low-latency video conferencing system. Bandwidth and
processing analysis, architecture and IC research for optimum performance and flexibility with low cost. |
| Primex Aerospace | Design review, implementation, and test of 8051-based boost controller for Triana satellite
system. |
| University of Washington | Design and development of ultrasound controller board for research system,
expandable to 1024 channels. 68332 processor and embedded code, distributed 50 MHz clocking system, selftest
feedback bus, VME form factor. Extensive RF amplifier modeling and optimization in SPICE. |
| EKOS Corporation | Developed ultrasound control and measurement system, including 68332 processor core
and embedded code, 50 MHz direct digital synthesis, RF amplification, no-trim thermocouple measurement system
accurate to 0.2 degrees C, and A/D data acquisition. FCC Class B testing on prototypes. Also follow-on work
calculating system reliability statistics. |
| Metawave Communications | Provided design and implementation consulting for an Ethernet interface, also
complete design and documentation for cost-reduced 68332-based board, and redesign of RF detector circuit for
improved sensitivity. |
| Cellular Technical Systems Inc. | Algorithm development, digital signal processing hardware and software
design, analog circuit design, and PCB layout for cellular phone fraud detection system. Designed 12-bit 100K Sa/s
A/D systems for PC environment, 68360-based control board including 8"x10" 6-layer PCB layout, several analog
filters, a 900 MHz cellular band FM transmitter, and waveform extraction and matching algorithms. |
| Stat Corporation | Quick design and layout of a small daughterboard for production rework. |
| Cathex Japan | Project management and Visual Basic GUI development for a custom modification to a research
ultrasound machine in Japan. |
| Polymer Technology International | Completed feasability study, prototype, and Windows GUI for custom
alteration of a blood glucose testing system. |
| Virtual I/O Inc. | Successfully completed crash prototype development in time for a trade show: completed a
video waveshaping design, schematics, 6-layer PCB layout and fabrication, circuit breadboard, parts procurement,
assembly, test, and integration of four units in two weeks. |
| Diagnostic Devices Group | Research and development, algorithm design and analysis, digital signal processing design for catheter mounted ultrasound cardiac flow measurement system. Responsible for signal processing and
digital hardware design and implementation, including a 75 MSa/s data acquisition system. Developed 3D angle
and flow determination algorithms, velocity estimation algorithms, and signal processing algorithms. Extensive
analysis and simulation using custom code and numerical analysis CAE. |
| Sound Devices Inc. | Original member of design team for a startup producing an infrared and ultrasound based
swimming pool safety monitor. Responsible for hardware design including RF transmitter and receiver and
microcontroller, and also software design and development. Worked under NIH grant. |
| Software Architects Inc. | Designed production version of a SCSI interface between an Apple Powerbook and a
desktop computer ("Laptop Liberator"). Cost-sensitive consumer design completed quickly. Took through FCC
Class B testing. |
| Siemens Ultrasound Inc. | Ongoing engineering, troubleshooting, and new system design from former
employer. |
