Evan F Yu

Title: Evan F. Yu: Semiconductor Amplifier Innovation.

Introduction

Evan F. Yu is an inventor associated with Rancho Palos Verdes, California, and Freescale Semiconductor, Inc. His patent work includes semiconductor amplifier designs intended to reduce parasitic capacitance and improve power-added efficiency.

Latest Patents

Yu’s listed patent, “High Efficiency Amplifier with Reduced Parasitic Capacitance,” describes a semiconductor amplifier built on a substrate with one or more unit amplifying cells. Dielectric-filled trench isolation walls surround individual cells and groups of cells, while selected semiconductor regions between the walls remain electrically floating relative to the substrate. The design reduces parasitic capacitance and can improve the amplifier’s power-added efficiency. The patent also describes an intermediate-doping semiconductor layer to help prevent excessive leakage between buried-layer contacts when high-resistivity substrates are used. Yu is credited with 2 patents.

Career Highlights

Yu’s documented patent work focuses on semiconductor device architecture and amplifier performance. His association with Freescale Semiconductor, Inc. connects this work to the company’s semiconductor research and development activities.

Collaborations

Dragan Zupac and Theresa M. Keller are identified as Yu’s coworkers. The available information does not specify their roles in the patent or establish them as co-inventors.

Conclusion

Evan F. Yu’s patent work addresses parasitic capacitance and leakage in semiconductor amplifiers, with the goal of improving efficiency and device performance.