Takefumi Kurosaki

Title: Takefumi Kurosaki: Innovator in High Frequency Technology

Introduction

Takefumi Kurosaki is a notable inventor based in Samukawa, Japan. He has made significant contributions to the field of high frequency technology, particularly through his innovative designs and patents. His work has implications for various applications in communication and electronic devices.

Latest Patents

Kurosaki holds a patent for a high frequency narrow-band multi-mode filter. This invention involves a high frequency narrow-band pass multi-mode filter constructed in such a manner that surface acoustic wave (SAW) resonators of single sideband wave (SSBW) are closely disposed to each other on a single piezo-electric substrate. This design generates different vibration modes of varying resonance frequencies. The conditions under which the resonators are acoustically coupled to each other have been experimentally determined, leading to the successful implementation of the filter. To minimize the ohmic loss of a very narrow common bus bar, the number of strip pairs of electrodes in both interdigital transducers (IDTs) is minimized. Reflectors are provided on both sides of the IDTs to compensate for the reduction of the Q value. Additionally, a part of the bus bar for the IDT electrodes is formed integral with some or all of the gratings of the reflectors, allowing for high flexibility in the positioning of the grating electrodes with respect to lead terminals.

Career Highlights

Kurosaki is currently employed at Toyo Communication Equipment Co., Ltd., where he continues to develop innovative technologies. His work has been instrumental in advancing the capabilities of communication equipment, particularly in high frequency applications.

Collaborations

Kurosaki has collaborated with notable colleagues such as Yuzo Nakazawa and Kazuo Ono. Their combined expertise has contributed to the success of various projects and innovations within the company.

Conclusion

Takefumi Kurosaki is a distinguished inventor whose work in high frequency technology has led to significant advancements in communication equipment. His innovative patent for a high frequency narrow-band multi-mode filter exemplifies his commitment to enhancing technology in this field.