Hyeongseok Kim

Title: Hyeongseok Kim: Innovator in GPS Technology

Introduction

Hyeongseok Kim is a notable inventor based in Ann Arbor, MI (US). He has made significant contributions to the field of GPS technology, particularly through his innovative designs and patents. His work focuses on enhancing the efficiency and functionality of GPS receivers.

Latest Patents

Hyeongseok Kim holds a patent for a "Quadrature fully-integrated tri-band GPS receiver." This invention is implemented in 65 nm CMOS technology. The analog front-end (AFE) is specifically designed for a miniaturized low-power GPS logger that leverages heavy duty-cycling. The main contribution of the RF front-end comprises two main signal paths that support both single-band only mode and tri-band mode (L1, L2, L5). In tri-band mode, the AFE can fold three GPS signals into a single low intermediate frequency channel, thanks to the orthogonality of the pseudo-random codes. In active mode, the radio draws 12.1 mW in single-band (L1) mode with a low-noise amplifier (LNA) and an active mixer, and 8.2 mW in tri-band mode with a passive front-end, all from a 1.2 V supply, with a startup time of 20 microseconds.

Career Highlights

Hyeongseok Kim is affiliated with the University of Michigan, where he continues to advance his research and development in GPS technology. His work has garnered attention for its innovative approach to integrating multiple frequency bands into a compact design.

Collaborations

Hyeongseok Kim collaborates with David D Wentzloff, who is also involved in the field of GPS technology. Their partnership has contributed to the development of cutting-edge solutions in this area.

Conclusion

Hyeongseok Kim's contributions to GPS technology through his patent and collaboration with fellow researchers highlight his role as an innovator in the field. His work continues to influence advancements in low-power GPS receivers.