Joon-Hee Lee

Title: Joon-Hee Lee: Innovator in Frequency Calibration Technology

Introduction

Joon-Hee Lee is a notable inventor based in Daejeon, South Korea. He has made significant contributions to the field of frequency calibration technology. His innovative work has led to the development of a patent that enhances the functionality of phase locked loops (PLLs).

Latest Patents

Joon-Hee Lee holds a patent for an invention titled "Automatically calibrating frequency features of a phase locked loop." This patent describes a PLL that includes an open-loop automatic frequency calibration circuit. The circuit comprises a frequency detector, first and second sinks, a comparator, and a bank selector. The frequency detector generates up-signals and down-signals in response to frequency differences between phase difference signals. The first and second sinks discharge capacitors based on these signals, while the comparator compares their voltages. The bank selector utilizes a binary search to select an optimum bank and outputs a bank selection signal. This innovation allows the voltage-controlled oscillation to change its frequency features in response to the bank selection signal. Joon-Hee Lee has 1 patent to his name.

Career Highlights

Joon-Hee Lee is affiliated with the Korea Advanced Institute of Science and Technology, a prestigious institution known for its research and innovation. His work at this institute has allowed him to explore advanced technologies and contribute to the field of electronics.

Collaborations

Throughout his career, Joon-Hee Lee has collaborated with esteemed colleagues, including Seong-Hwan Cho and Kyung-Lok Kim. These collaborations have fostered a productive environment for innovation and research.

Conclusion

Joon-Hee Lee's contributions to frequency calibration technology exemplify the impact of innovative thinking in the field of electronics. His patent reflects a significant advancement in PLL technology, showcasing his expertise and dedication to research.