Myungjoon Choi

Title: Myungjoon Choi: Innovating Low Power Sensor Technologies

Introduction

Myungjoon Choi is an accomplished inventor based in Ann Arbor, MI. With a focus on innovative technologies, he holds two patents that showcase his expertise in environmental sensors and current reference designs. His contributions are paving the way for advancements in low-power applications.

Latest Patents

One of Myungjoon Choi's latest inventions is an **Environmental Sensor** that implements a sleep mode timer with an oscillator circuit suitable for low power applications. The oscillator circuit features multiple timer stages arranged in series and includes several transistors that output two voltages with opposite polarities. The exciting aspect of this design is how the oscillation of the voltage polarities is based on leakage currents in the transistors, allowing for efficient energy use. The circuit also incorporates tuning transistors to adjust the oscillation frequency, managed by a complementary-to-absolute temperature (CTAT) voltage generator that stabilizes performance with temperature changes.

Another significant contribution from Choi is the development of an **Ultra Low Power Temperature Insensitive Current Source with Line and Load Regulation**. This innovation presents a temperature insensitive sub-nA current reference with minimal power overhead. The design showcases a novel approach to managing the temperature dependence of MOSFETs by linearly reducing the gate voltage of a sub-threshold-biased MOSFET as the temperature rises. His design of a MOSFET-only current reference achieves remarkably low power consumption while ensuring high immunity to supply voltage fluctuations.

Career Highlights

Choi's career is primarily connected to the University of Michigan, where he continues to contribute to groundbreaking research and innovation. His focus on sensor technology and current reference designs has made him a notable figure in the world of electrical engineering.

Collaborations

Throughout his career, Myungjoon Choi has collaborated with esteemed coworkers such as David Theodore Blaauw and Dennis Sylvester. These partnerships highlight the synergy of ideas and expertise that drive innovation within his research team.

Conclusion

Myungjoon Choi's contributions to low-power sensor technologies not only reflect his ingenuity but also emphasize the importance of sustainable advancements in electronic design. As he continues to innovate, the impact of his work promises to benefit various applications relying on efficient energy use and reliable performance.