Cheng-Hsien Hung

Title: Innovations by Cheng-Hsien Hung

Introduction

Cheng-Hsien Hung is a notable inventor based in Allen, TX (US). He has made significant contributions to the field of electronics, particularly in the development of phase-locked loop (PLL) technologies. With a total of 4 patents to his name, his work has had a considerable impact on the industry.

Latest Patents

One of his latest patents is the "Ultra-low power instant lock phase lock loop (PLL)." This invention focuses on reducing the locking time of a type-II all-digital phase-locked loop (ADPLL) circuit. The system performs several steps, including receiving a reference signal with a reference frequency and setting a digitally controlled oscillator (DCO) to a target frequency that exceeds the reference frequency. The DCO generates an output signal that is utilized to create a feedback signal. A time-to-digital converter determines the initial phase difference between the reference signal and the feedback signal. Furthermore, a digital initial phase compensation circuit adjusts this initial phase difference to achieve a substantially zero phase difference, thereby reducing the locking time of the ADPLL circuit. This innovation allows the ADPLL circuit to reach a steady-state condition in ten or fewer cycles of the reference signal.

Career Highlights

Cheng-Hsien Hung is currently employed at Maxim Integrated Products, Inc., where he continues to innovate and develop advanced electronic solutions. His expertise in PLL technology has positioned him as a key contributor in his field.

Collaborations

Cheng-Hsien has collaborated with several talented individuals, including Haiyu Huang and Shiau Chwun George Pwu. These collaborations have further enhanced the quality and impact of his inventions.

Conclusion

Cheng-Hsien Hung's contributions to the field of electronics, particularly through his patents on phase-locked loop technologies, demonstrate his innovative spirit and technical expertise. His work continues to influence advancements in electronic systems.