Han Hao

Title: Han Hao and High-Speed Signal Conversion

Introduction

Han Hao is an inventor associated with Vancouver, Washington, and a patent for high-speed signal conversion. His work addresses timing control in electronic systems that connect photonic and electronic integrated circuits.

Latest Patents

The supplied information identifies one patent associated with Han Hao: High-speed single-ended-to-differential converter with skew control. The invention describes a converter in an electrical integrated circuit co-packaged with a photonic integrated circuit using a system-in-package architecture. A reverse-biased photodiode provides a single-ended signal, which the circuit converts into complementary differential outputs.

The design uses adjustable skew correctors in the two output branches. A skew-detection circuit asynchronously samples the outputs with a non-synchronized clock, while a delay detector estimates the difference in branch delays from accumulated sampling errors and clock cycles. This enables automatic skew detection and correction without clock recovery or synchronization.

The approach is intended to preserve timing integrity and reduce bit-error rates in high-speed links, including 56-Gb/s PAM4 applications in data centers. It also supports integration with downstream current-mode logic stages. The supplied data lists 1 patent for Han Hao.

Career Highlights

The provided information associates Han Hao with Sicily Merger Sub II, Inc. and identifies his work in high-speed electronic and photonic signal interfaces. The patent’s described techniques focus on managing skew and supporting reliable differential signaling across variable data rates.

Collaborations

The supplied information names Wonho Lee and Parmanand Mishra as Han Hao’s coworkers. Their specific roles in the patent or related work are not provided.

Conclusion

Han Hao’s listed patent presents a method for converting single-ended signals into differential outputs while detecting and correcting timing skew. Its focus on high-speed, reliable integration makes it relevant to electronic-photonic systems and data-center links.