Susumu Hara

Title: The Innovations of Susumu Hara

Introduction

Susumu Hara is a notable inventor based in Austin, TX (US), recognized for his contributions to clock generation techniques and synthesizer technologies. With a total of 11 patents, Hara has made significant advancements in the field of electronics, particularly in improving the performance and reliability of clock signals.

Latest Patents

Hara's latest patents include innovative technologies such as the "Cascaded PLL for reducing low-frequency drift in holdover mode." This patent describes a cascaded phase-locked loop (PLL) clock generation technique that effectively reduces frequency drift of a low-jitter clock signal during holdover mode. The apparatus involves multiple PLL circuits that work together to generate control signals and clock signals, addressing temperature dependence and jitter issues.

Another significant patent is the "Interpolative divider linearity enhancement techniques." This flexible clock synthesizer technique involves generating a phase interpolator calibration signal to adjust the output of a phase interpolator within an interpolative divider. The calibration signal is based on an error signal that indicates the phase relationship between a reference clock signal and a feedback clock signal of a PLL, enhancing the overall performance of the clock synthesizer.

Career Highlights

Throughout his career, Susumu Hara has worked with prominent companies such as Silicon Laboratories Inc. and Keyeye Communications. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to the advancement of technology in the electronics sector.

Collaborations

Hara has collaborated with talented individuals in the field, including Zhuo Fu and Adam B Eldredge. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Susumu Hara's work exemplifies the spirit of innovation in the electronics industry. His patents and collaborations have significantly impacted clock generation and synthesizer technologies, showcasing his expertise and dedication to advancing the field.