Location History:
- Kashiwa, JP (1995 - 1996)
- Hachioji, JP (1994 - 2005)
- Hachiouji, JP (1994 - 2007)
- Niiza, JP (2006 - 2012)
- Tokyo, JP (2011 - 2014)
Company Filing History:
11 out of 42,485 
8 out of 900 
7 out of 7,524 
Years Active: 1994-2014
Title: **Yoshikuni Matsunaga: Innovator in RF Power Amplifier Technology**
Introduction
Yoshikuni Matsunaga is a prominent inventor based in Niiza, Japan, known for his significant contributions to the field of RF power amplifiers. With an impressive portfolio of 28 patents, Matsunaga's innovations have led to advancements in technology that enhance performance in electronic circuits.
Latest Patents
Matsunaga's latest invention involves a novel RF power amplifier designed to reduce the primary-side input impedance of a transformer, serving as an output matching circuit, without compromising the Q-factor. This RF power amplifier integrates transistors and a transformer, which consists of a primary coil and a secondary coil that are magnetically coupled. Input signals are directed to the transistors' input terminals, with the primary coil connected to each output terminal. The design includes a unique parallel coupling of a first and second coil within the primary coil, which significantly lowers the input impedance while maintaining efficient operation.
Career Highlights
Throughout his career, Yoshikuni Matsunaga has worked with leading companies, including Hitachi, Ltd. and Hitachi Medical Corporation. His work in these organizations has not only contributed to product development but has also laid the groundwork for further innovations in the telecommunications and medical device industries.
Collaborations
Matsunaga has collaborated with notable coworkers such as Tetsuhiko Takahashi and Etsuji Yamamoto. These collaborations have fostered an environment of creativity and technical advancement, enabling the successful completion of multiple projects that have had a lasting impact on the industry.
Conclusion
Yoshikuni Matsunaga's innovations, particularly in RF power amplifier technology, showcase his expertise and dedication to advancing engineering solutions. With 28 patents to his name, he represents a significant figure in the realm of inventions that continue to push the boundaries of what is possible in electronic and telecommunications technologies. His work not only reflects his individual talents but also highlights the importance of collaboration in the pursuit of technological progress.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.