Katsumi Ushiyama

Title: Innovations of Katsumi Ushiyama

Introduction

Katsumi Ushiyama is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of radio technology, holding a total of 4 patents. His work focuses on enhancing the functionality and efficiency of personal radio paging services and antennas.

Latest Patents

One of Ushiyama's latest patents is a receiver for personal radio paging service. This innovative receiver is designed in a thin, card-shaped housing that contains the necessary circuitry. The housing is constructed by sandwiching a frame made of insulating material between two parallel rectangular panels of conductive material. Conductive fasteners are utilized to connect the panels, allowing the housing to function as a radio frequency receiving antenna.

Another significant patent is for a small antenna intended for portable radios. This design features two planar conductive boards arranged in parallel at a small interval, which is minimal compared to the received radio wavelengths. A dielectric frame maintains the spacing between the boards, and arbitrary feeding points are selected along their edges. This allows for flexibility in short-circuiting the boards, optimizing performance based on the direction of incoming radio waves.

Career Highlights

Throughout his career, Ushiyama has worked with prominent companies such as Kokusai Electric Co., Ltd. and Kiyohiko Itoh. His experience in these organizations has contributed to his expertise in radio technology and innovation.

Collaborations

Ushiyama has collaborated with notable individuals in his field, including Sadafumi Sakamoto and Kiyohiko Itoh. These partnerships have fostered a creative environment that has led to the development of his innovative patents.

Conclusion

Katsumi Ushiyama's contributions to radio technology through his patents demonstrate his commitment to innovation. His work continues to influence the industry and inspire future advancements in personal radio communication.