Koji Sasabe

Title: Innovative Contributions of Koji Sasabe in Bandpass Filter Technology

Introduction

Koji Sasabe, an inventive mind hailing from Hirakata, Japan, has made notable advancements in the field of filter technology. With a focus on improving signal transmission, his work revolves around the development of a unique bandpass filter that enhances performance for various applications.

Latest Patents

Sasabe has been granted a patent for a groundbreaking "Bandpass filter and process of fabricating the same." This innovative bandpass filter combines a Bulk Acoustic Wave (BAW) filter with a patterned planar filter that includes stubs. The BAW filter is composed of multiple piezoelectric resonators designed to target a specific frequency bandpass. In contrast, the planar filter is calibrated to suppress frequencies that are close to or beyond the designated bandpass, resulting in an optimized performance. By configuring the resonators in a ladder formation between a primary signal transmission path and a ground, and integrating a strip line on a dielectric layer to create a secondary signal transmission path, Sasabe's design allows for significant improvements. This configuration not only enhances near-band rejection inherent in BAW filters but also achieves excellent out-of-band rejection in adjacent frequency ranges. The outcome is a filter that delivers a sharp and wide bandpass, which is crucial for various electronic applications.

Career Highlights

Koji Sasabe is currently employed at Panasonic Electric Works Co., Ltd., a leading company known for its commitment to innovation in electronics. Throughout his career, Sasabe's work has emphasized enhancing communication technologies and signal processing, making significant contributions to the industry.

Collaborations

Sasabe has worked alongside talented colleagues, including Atsushi Suwa and Futoshi Nishimura, who have partnered with him on various projects in filter technology. Their collaboration has fostered a rich environment for innovation at Panasonic, resulting in advancements that address the complexities of modern electronic communications.

Conclusion

Koji Sasabe's contributions to the development of bandpass filters showcase the importance of innovation in enhancing electronic communication technologies. His patent reflects a keen understanding of engineering principles and an ability to integrate complex components for improved performance. As industries continue to evolve, inventors like Sasabe play a critical role in shaping the future of technology through their inventions.