Chi-Hung Kao

Title: Innovations of Chi-Hung Kao

Introduction

Chi-Hung Kao is a prominent inventor based in Taipei, Taiwan. He has made significant contributions to the field of semiconductor technology, holding a total of 6 patents. His work focuses on enhancing the performance and efficiency of power amplifiers and semiconductor devices.

Latest Patents

One of his latest inventions is a linearized bias circuit with adaptation. This innovation addresses the issues faced by power amplifiers with conventional bias circuits, which can experience shifts or deterioration in DC and AC characteristics due to temperature variations. The linearized bias circuit includes a reference voltage source, a first voltage source, resistors, and multiple NPN transistors. This invention provides bias current temperature compensation, gain and phase compensations, achieving high linearity for conventional power amplifiers while reducing DC power consumption. Additionally, it minimizes the number of required elements and layout area, simplifying design complexity and reducing costs.

Another notable patent is related to a lateral double diffused metal oxide semiconductor (LDMOS) device with an aligned buried layer isolation layer. This invention involves forming a buried layer of polarity equivalent to a well region, enhancing the electrical performance of the LDMOS device. The buried layer is laterally aligned with respect to the well region, separated by a portion of an epitaxial layer, which contributes to improved device functionality.

Career Highlights

Chi-Hung Kao has worked with several notable companies, including Taiwan Semiconductor Manufacturing Company Ltd. and Winbond Electronics Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in semiconductor technology.

Collaborations

Some of his coworkers include Chih-Mu Huang and Chuan-Jane Chao. Their collaborative efforts have contributed to advancements in the field of semiconductor devices.

Conclusion

Chi-Hung Kao's contributions to semiconductor technology through his innovative patents have significantly impacted the industry. His work continues to influence the development of efficient and high-performance electronic devices.