This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Fujitsu Corporation. Active years: 2011-2017.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kawasaki, JP (2011)
- Sendai, JP (2017)
Company Filing History:
Years Active: 2011-2017
Title: Kouji Hirai: Innovator in Radio Technology
Introduction
Kouji Hirai is a notable inventor based in Sendai, Japan. He has made significant contributions to the field of radio technology, holding a total of 2 patents. His work focuses on enhancing the performance and efficiency of radio apparatuses.
Latest Patents
Hirai's latest patents include a radio apparatus designed to improve signal transmission. This apparatus features an amplifier that boosts the power of a transmission signal, a first mixer that combines a feedback signal with a local signal of a predetermined frequency, and an analog-to-digital converter that performs necessary conversions. Additionally, a distortion compensator addresses nonlinear distortion based on digital signals, while an oscillator adjusts the frequency of the local signal in a time division manner.
Another significant patent is a distortion compensating apparatus that includes several key units. An information measuring unit assesses distortion and electric power components from a radiation signal. A compensation coefficient calculating unit derives a compensation coefficient based on these measurements. The system also includes a signal transmitting unit that outputs a corrected transmission signal, a signal converting unit for high-frequency signal conversion, and an amplitude separating unit that amplifies and processes feedback signals.
Career Highlights
Kouji Hirai is currently employed at Fujitsu Corporation, where he continues to innovate in the field of wireless communication technology. His work has been instrumental in developing advanced radio systems that enhance communication capabilities.
Collaborations
Hirai collaborates with talented coworkers, including Takashi Yokoyama and Shigeru Ohkawa. Their combined expertise contributes to the success of their projects and the advancement of technology at Fujitsu Corporation.
Conclusion
Kouji Hirai is a prominent inventor whose work in radio technology has led to significant advancements in the field. His innovative patents and contributions to Fujitsu Corporation highlight his dedication to improving communication systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile