Company Filing History:
Years Active: 2001-2010
Title: Tetsu Ohwada: Innovator in Bandstop Filters and High-Frequency Modules
Introduction
Tetsu Ohwada is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of electronics, particularly in the development of bandstop filters and high-frequency modules. With a total of 6 patents to his name, Ohwada's work has had a substantial impact on the industry.
Latest Patents
One of his latest patents is a bandstop filter that features a main line and λ/4 wavelength resonators positioned in proximity to one another. This innovative design minimizes variations in characteristics, thereby enhancing production yield. The physical length of the joint portion between the main line and the oscillator can be increased by incorporating an impedance non-continuous structure within the strip conductor of the oscillator. This improvement allows for a wider joint slit, which reduces variations in filter characteristics due to pattern accuracy, ultimately improving the yield of the filter. Additionally, this design increases the freedom in selecting dielectric substrates, enabling the use of less expensive materials with lower pattern accuracy requirements.
Another notable patent involves a high-frequency module and antenna device. This invention includes a first main waveguide connected to a T-branch circuit, which is further linked to a first low-pass filter and a band-pass filter. The design also incorporates converters and amplifiers structured by microwave integrated circuits, enhancing the overall functionality and efficiency of the device.
Career Highlights
Tetsu Ohwada is currently employed at Mitsubishi Electric Corporation, where he continues to innovate and develop cutting-edge technologies. His work has been instrumental in advancing the capabilities of electronic devices, particularly in high-frequency applications.
Collaborations
Ohwada has collaborated with notable colleagues such as Moriyasu Miyazaki and Naofumi Yoneda. Their combined expertise has contributed to the successful development of various technologies in the field.
Conclusion
Tetsu Ohwada is a distinguished inventor whose contributions to bandstop filters and high-frequency modules have significantly influenced the electronics industry. His innovative designs and collaborative efforts continue to pave the way for advancements in technology.