Company Filing History:
3 out of 5 
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1 out of 13,712 
Years Active: 1984-2009
Title: Tsukasa Yoneyama: Innovator in NRD Guide Technology
Introduction
Tsukasa Yoneyama is a notable inventor based in Sendai, Japan. He has made significant contributions to the field of electromagnetic wave technology, particularly through his innovative patents. With a total of 5 patents, Yoneyama's work focuses on enhancing data transmission systems.
Latest Patents
Yoneyama's latest patents include the NRD guide transceiver, a download system utilizing the same, and a download memory designed for this system. The NRD guide transceiver aims to eliminate the need for a change-over switch for transmission and reception. It features a simple structure capable of downloading large-capacity data, such as video, in a short time. The transceiver comprises a pair of dielectric strips positioned between two parallel conductor plates, with Schottky barrier diodes connected to the ends of the dielectric strips. Additionally, a low pass filter is connected to the signal input terminal, while a high pass filter is linked to the IF output terminal.
Another significant patent is the small NRD guide bend, which effectively suppresses the LSE mode, a parasitic mode, through a simple structure. This innovation facilitates a reduction in size and weight. The design includes a metal body arranged near the dielectric waveguide of the NRD guide to suppress the LSE mode. The NRD guide is configured to propagate electromagnetic waves through the dielectric waveguide, which is sandwiched between parallel conductor plates with a gap of less than half a wavelength. The metal body can take various shapes, including discoid, elliptic, or prismatic, and maintains an even distance from the dielectric waveguide to suppress phase constant differences.
Career Highlights
Throughout his career, Tsukasa Yoneyama has worked with several prominent companies, including Intelligent Cosmos Research Institute and Seki & Company, Ltd. His experience in these organizations has contributed to his expertise in the field of electromagnetic technology.
Collaborations
Yoneyama has collaborated with notable individuals in his field, including Hirokazu Sawada and Youhei Ishikawa. Their joint efforts have further advanced the innovations in electromagnetic wave technology.
Conclusion
Tsukasa Yoneyama's contributions to the field of NRD guide technology and his innovative patents demonstrate his significant impact on data transmission systems. His work continues