Company Filing History:
2 out of 832,843 Years Active: 2002-2003
Title: Nobuhiko Ishihara: Innovator in High Frequency Power Amplification
Introduction
Nobuhiko Ishihara is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of high frequency power amplification, holding two patents that showcase his innovative approach to technology.
Latest Patents
Ishihara's latest patents include a high frequency power amplifying apparatus that features amplifying stages with gain control signals of lower amplitudes applied to earlier preceding stages. This apparatus is designed with an amplifying section that consists of multiple amplifying stages connected in cascade. A power control signal is supplied to the amplifying section through a control terminal, allowing for precise control of the output. Each amplifying stage has a gain that is smaller than that of the preceding stage. Gain control signals, generated from the power control signal, are supplied to the respective amplifying stages. Dividing resistors are connected in series between the control terminal and a reference potential to divide the voltage of the power control signal, generating a variety of different gain control signals. These signals are then supplied to the amplifying stages, ensuring that the absolute value of the voltage of the gain control signal applied to each stage is smaller than that applied to an earlier preceding stage.
Career Highlights
Throughout his career, Ishihara has demonstrated a commitment to advancing technology in the field of power amplification. His innovative designs have contributed to the efficiency and effectiveness of high frequency amplifiers, making them more reliable for various applications.
Collaborations
Ishihara has worked alongside notable colleagues such as Hitoshi Akamine and Tetsuaki Adachi. Their collaborative efforts have further enhanced the development of advanced technologies in their field.
Conclusion
Nobuhiko Ishihara's contributions to high frequency power amplification through his patents reflect his dedication to innovation and technology. His work continues to influence the industry and inspire future advancements.