Kehan Zhu

Title: Kehan Zhu: Innovator in Optical Driver Circuits and Receivers

Introduction

Kehan Zhu is a prominent inventor based in Palo Alto, CA. He has made significant contributions to the field of optical driver circuits and receivers, holding a total of 4 patents. His work is characterized by innovative designs that enhance the performance of optical systems.

Latest Patents

One of Kehan Zhu's latest patents focuses on optical driver circuits. The disclosed examples relate to circuits that include a pre-driver circuit and a main driver circuit. The pre-driver circuit features a pattern generator and at least one serializer to produce a main modulation signal and an inverted delayed modulation signal. The main driver circuit incorporates a level controller to manage the amplitudes of pre-emphasis on the rising and falling edges of the modulation signal output, along with an equalization controller that transitions the modulation signal output from pre-emphasis amplitudes to main modulation amplitudes using the inverted delayed modulation signal.

Another notable patent involves receivers with automatic gain control. This invention includes a first stage, a second stage, a third stage, and an automatic gain controller. The first stage amplifies an input signal to generate a first signal. The second stage adjusts the first signal to produce a second signal based on a tunable gain. The third stage amplifies the second signal to yield an output signal. The automatic gain controller provides a differential signal based on a comparison between the peak voltage of the output signal and the sum of a common mode voltage and an offset voltage.

Career Highlights

Kehan Zhu is currently employed at Hewlett Packard Enterprise Development LP, where he continues to innovate and develop cutting-edge technologies. His work has significantly impacted the field of optical communications and signal processing.

Collaborations

Throughout his career, Kehan has collaborated with talented individuals such as Cheng Li and Di Liang. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Kehan Zhu is a distinguished inventor whose work in optical driver circuits and receivers has advanced the field of technology. His contributions continue to influence the industry, showcasing the importance of innovation in driving progress.