Futao Yamaguchi

Title: Futao Yamaguchi: Innovator in Active Filter Circuits

Introduction

Futao Yamaguchi is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronics, particularly in the development of active filter circuits. With a total of 4 patents to his name, Yamaguchi continues to push the boundaries of innovation in his field.

Latest Patents

Yamaguchi's latest patents include an "Active Filter Circuit of a Capacity Ground Type." This invention features differential transistors with first conductivity type bipolar transistors and load transistors with second conductivity type bipolar transistors. The design allows for a connecting node driven by a middle electric potential, which helps maintain constant voltage-dependent characteristics of earth capacitance, including parasitic capacitances. This innovation results in a smaller active filter circuit with reduced power consumption. Another significant patent is the "Capacity Ground Type Filter Circuit." This filter circuit utilizes capacitance connected to output terminals of integrators grounded, enabling output signals to be fed back from multiple stages of integrators to respective input stages of a subtracter. This design facilitates the construction of a high-pass filter with ease.

Career Highlights

Futao Yamaguchi is currently employed at Sony Corporation, where he applies his expertise in electronics to develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of electronic devices, particularly in the realm of signal processing.

Collaborations

Yamaguchi has collaborated with notable coworkers, including Takeshi Ikeda and Osamu Yoshioka. Their combined efforts have contributed to the success of various projects within the company.

Conclusion

Futao Yamaguchi is a distinguished inventor whose work in active filter circuits has made a significant impact in the field of electronics. His innovative patents and contributions to Sony Corporation highlight his dedication to advancing technology.