Company Filing History:
1 out of 3,568 
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1 out of 575 
Years Active: 1996-2022
Title: Jiro Hirokawa: Innovator in Antenna Technology
Introduction
Jiro Hirokawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of antenna technology, holding a total of 2 patents. His innovative designs have advanced the capabilities of communication systems.
Latest Patents
Hirokawa's latest patents include an antenna device and a slotted leaky waveguide array antenna. The antenna device features an antenna panel, an input terminal for high-frequency signals, and a feeding circuit that distributes the signal to multiple antenna elements. This design incorporates a first-stage branch circuit with one input and two outputs, along with second-stage branch circuits that further distribute the signals. The combining circuit then outputs selected signals to enhance performance.
The slotted leaky waveguide array antenna is designed for one-axis tracking. It maintains a stationary feed section while allowing the antenna to rotate in a horizontal plane to track azimuth directions. This antenna includes multiple radiation waveguides with slots arranged in a specific pattern, optimizing the beam width in a tilt direction.
Career Highlights
Hirokawa has worked with notable companies, including Nippon Steel Corporation. His experience in these organizations has contributed to his expertise in antenna technology and innovation.
Collaborations
Throughout his career, Hirokawa has collaborated with talented individuals such as Masahiro Uematsu and Takashi Ojima. These partnerships have fostered a creative environment that has led to groundbreaking advancements in his field.
Conclusion
Jiro Hirokawa's contributions to antenna technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the communication industry significantly.