Location History:
- Katano, JP (1997)
- Osaka, JP (2008 - 2010)
Company Filing History:
3 out of 27,375 
1 out of 16,453 
Years Active: 1997-2010
Title: Hiroyasu Takehara: Innovator in Transmission Power Amplification
Introduction
Hiroyasu Takehara is a notable inventor based in Osaka, Japan, recognized for his contributions to the field of electrical engineering. He holds a total of four patents, showcasing his innovative prowess and dedication to advancing technology, particularly in transmission power amplification systems.
Latest Patents
Among Takehara's latest innovations is the "Transmission power amplifier apparatus for combining power-amplified constant amplitude signals each having controlled constant amplitude value and phase." This invention features a signal calculator that segments an input signal into multiple constant amplitude signals. These signals are subsequently amplified by power amplifiers that operate under predetermined conditions, culminated by a power combiner that outputs a unified signal.
Another significant patent is the "Radio frequency power amplifier." This technology integrates an RF power amplifier transistor alongside a bias supply circuit, which provides the necessary bias current for optimal performance. The innovative bias control circuit enhances the amplifier's efficiency at low power levels while improving its temperature characteristics.
Career Highlights
Takehara's professional journey includes key positions at renowned companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His work in these esteemed organizations has significantly influenced his development of advanced technologies in power amplification.
Collaborations
Throughout his career, Takehara has collaborated with several talented individuals, including Osamu Ishikawa and Maeda Masahiro. These partnerships have fostered a creative exchange of ideas, further propelling innovation in their respective fields.
Conclusion
Hiroyasu Takehara stands out as a skilled inventor with a strong focus on improving transmission power amplification technologies. His patents not only reflect his technical expertise but also contribute to the advancement of electrical engineering, influencing the future of power amplification systems. Through continuous innovation and collaboration, Takehara reinforces the importance of ingenuity in the realm of technology.