Location History:
- Komoro, JP (2007 - 2008)
- Tokyo, JP (2011)
Company Filing History:
3 out of 3,781 
1 out of 10 
1 out of 7,525 
Years Active: 2007-2011
Title: Kazuhiro Koshio: Innovator in High Frequency Power Amplification
Introduction
Kazuhiro Koshio is a notable inventor based in Komoro, Japan. He has made significant contributions to the field of electronic components, particularly in high frequency power amplification. With a total of 4 patents to his name, Koshio's work has advanced the technology used in various electronic applications.
Latest Patents
Koshio's latest patents include an electronic component for high frequency power amplification. This innovation improves switching spectrum characteristics by controlling the gain of an amplifying NMOS transistor through a bias voltage. Additionally, a threshold voltage compensator is integrated to address variations in threshold voltage during manufacturing. This compensator utilizes an NMOS transistor formed in the same process as the amplifying NMOS transistor, converting current variations into corresponding voltage adjustments to stabilize the bias voltage.
Another significant patent is a semiconductor integrated circuit designed for high frequency power amplifiers. This circuit features a detection circuit that includes a transistor for detecting the AC component of an input signal. The power amplifier employs a current mirror circuit to mirror the current flowing through the detection transistor, along with a current-voltage converter to transform this current into voltage. The output from the detection circuit is then applied to the control terminal of the last-stage transistor for amplification, enhancing the overall performance of the amplifier.
Career Highlights
Kazuhiro Koshio has worked with prominent companies in the technology sector, including Renesas Technology Corporation and Hitachi Hybrid Network Co., Ltd. His experience in these organizations has contributed to his expertise in electronic components and power amplification technologies.
Collaborations
Throughout his career, Koshio has collaborated with talented individuals such as Kyoichi Takahashi and Hitoshi Akamine. These partnerships have fostered innovation and have played a crucial role in the development of his patented technologies.
Conclusion
Kazuhiro Koshio's contributions to high frequency power amplification through his innovative patents demonstrate his significant impact on the field of electronics. His work continues to influence advancements in technology, showcasing the importance of innovation in driving progress.