Company Filing History:
Years Active: 1977
Title: Chiuichi Sodeyama: Innovator in Mixer Circuit Technologies
Introduction: Chiuichi Sodeyama, an esteemed inventor based in Yokohama, Japan, has made significant contributions to the field of electronics through his innovative designs in mixer circuits. With a total of two patents to his name, Sodeyama's work plays a pivotal role in advancing communication technologies.
Latest Patents: Sodeyama's latest inventions include a “Mixer Circuit” and a “Rat-Race Mixer Circuit.” The Mixer Circuit details a system where a high frequency signal and a local oscillation signal are applied to two ports of a rat-race with four ports. Grounded diodes are connected to the other two ports, allowing an intermediate frequency signal to be derived from a filter connected to a circular loop in the rat-race. Importantly, the distances between various connection points are meticulously designed to optimize performance.
The Rat-Race Mixer Circuit, his second patent, innovatively utilizes microstrip lines configured on a substrate to create a loop-shaped transmission line. It features four transmission lines connected to this loop, with two residing within it. A conductor at the center of the loop connects a pair of diodes, enabling frequency conversion from a high frequency signal to derive an intermediate frequency signal on the opposing substrate surface.
Career Highlights: Sodeyama's career is marked by his tenure at Hitachi, Ltd., a leading technology company where he has applied his inventive skills to enhance electronic communication systems. His expertise in circuit design has positioned him as a notable figure within the company.
Collaborations: Throughout his career, Sodeyama has collaborated with other esteemed professionals, including Keiro Shinkawa and Hirozi Shoyama. Together, they have contributed to the advancement of innovative technologies, highlighting the importance of teamwork in achieving groundbreaking results.
Conclusion: Chiuichi Sodeyama's contributions to the field of electronics, particularly in mixer circuit technology, illustrate the profound impact an inventor can have on modern communication systems. His patents reflect a blend of creativity and technical precision, establishing him as a valuable innovator in his field. As technology continues to evolve, Sodeyama's work will undoubtedly be appreciated for its foundational role in the advancement of electronic circuits.