Location History:
- Koganei, JP (2004 - 2010)
- Tokyo, JP (2006 - 2011)
- Kanagawa, JP (2011)
Company Filing History:
11 out of 364 
2 out of 39,245 
2 out of 448 
Years Active: 2004-2011
Title: Hiroyo Ogawa: Innovator in Antenna Technology
Introduction
Hiroyo Ogawa is a prominent inventor based in Tokyo, Japan. She has made significant contributions to the field of antenna technology, holding a total of 14 patents. Her innovative designs focus on improving the performance and efficiency of communication systems.
Latest Patents
Among her latest patents are the circular waveguide antenna and the circular waveguide array antenna. These inventions are designed to be low-cost and compact, enhancing antenna reflection loss characteristics and improving radiation characteristics, particularly radiation gain. The circular waveguide array antenna features feeding portions that deliver electromagnetic waves to one end of the circular waveguides, while radiation apertures at the opposite ends radiate these waves. Each circular waveguide is equipped with a conical horn, with specific dimensions and opening angles that optimize performance based on the employed frequency band.
Another notable patent is the method for generating a carrier residual signal and its device. This invention allows for the stable generation of a heterodyne optical signal used in photometric fields or optical fiber radio communication. The device includes an optical modulating unit with a light source and an SSB optical modulator, which work together to produce a light wave that effectively suppresses unwanted signal components.
Career Highlights
Hiroyo Ogawa has worked with esteemed organizations such as the National Institute of Information and Communications Technology and Fujitsu Corporation. Her experience in these institutions has allowed her to develop and refine her innovative ideas in antenna technology.
Collaborations
Throughout her career, Ogawa has collaborated with notable colleagues, including Yozo Shoji and Kiyoshi Hamaguchi. These partnerships have contributed to her success and the advancement of her inventions.
Conclusion
Hiroyo Ogawa's contributions to antenna technology exemplify her innovative spirit and dedication to improving communication systems. Her patents reflect her expertise and commitment to advancing the field, making her a significant figure in the world of inventions.