Shigehiko Nagamine

Title: Shigehiko Nagamine: Innovator in Acoustic Wave Technology

Introduction

Shigehiko Nagamine is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of acoustic wave technology, holding a total of 6 patents. His innovative work has paved the way for advancements in communication apparatuses and filters.

Latest Patents

Nagamine's latest patents include an acoustic wave filter, multiplexer, and communication apparatus. The filter body features a serial arm and one or more parallel resonators connected in a ladder shape. The serial arm consists of multiple serial resonators linked in series, with a difference in resonance frequencies that is smaller than half the difference between the resonance frequency and the antiresonance frequency of each resonator. Additionally, the serial arm includes a first divided arm extending in a predetermined direction on a piezoelectric substrate, along with a second divided arm that folds back and extends toward the first divided arm. Furthermore, the shield conductor is strategically placed between the serial resonators in both divided arms. Another notable patent involves a surface acoustic wave element that includes an IDT electrode with an electrode finger on a piezoelectric substrate. This electrode finger is formed by layering an intermediate layer and an electrode layer, which has a higher coefficient of thermal expansion than the intermediate layer. The cross-section of the electrode finger is trapezoidal, widening closer to the piezoelectric substrate.

Career Highlights

Shigehiko Nagamine has had a distinguished career at Kyocera Corporation, where he has been instrumental in developing cutting-edge technologies. His expertise in acoustic wave devices has significantly contributed to the company's reputation as a leader in the field.

Collaborations

Nagamine has collaborated with talented coworkers, including Yuuko Yokota and Motoki Ito. Their combined efforts have led to innovative solutions and advancements in their respective areas of expertise.

Conclusion

Shigehiko Nagamine's contributions to acoustic wave technology exemplify his dedication to innovation and excellence. His patents and work at Kyocera Corporation continue to influence the industry and inspire future advancements.