Francisco Iwao Hirata

Title: Francisco Iwao Hirata: Innovator in Substrate Integrated Waveguide Technology

Introduction

Francisco Iwao Hirata is a notable inventor based in San Diego, California. He has made significant contributions to the field of electrical engineering, particularly in the area of substrate integrated waveguide technology. With a total of three patents to his name, Hirata's work focuses on innovative solutions for electronic filtering and signal processing.

Latest Patents

Hirata's latest patents include groundbreaking inventions that enhance the performance of electronic devices. One of his patents describes an electric coupling of a substrate integrated waveguide cavity resonator to a suspended substrate stripline low pass filter for introducing a notch response. This invention features a substrate with metal layers on both surfaces, a filter circuit on the top surface, and a top ground plate with an air cavity positioned above the filter circuit. Additionally, a bottom ground plate with an air cavity is positioned below the filter circuit, allowing for effective coupling of the SIW cavity resonator to create a notch response.

Another significant patent by Hirata involves a broadband transition from stripline to substrate integrated waveguide. This device includes a substrate with two metal ground layers connected by metallic vias. The transition structure is embedded within the substrate and features an impedance transformer coupled to a pair of transmission lines. An isolation device is incorporated to manage electromagnetic fields, ensuring optimal performance of the transition structure.

Career Highlights

Throughout his career, Francisco Iwao Hirata has worked with various companies, including Benchmark Electronics Limited. His experience in the industry has allowed him to develop and refine his innovative ideas, contributing to advancements in electronic engineering.

Collaborations

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Conclusion

Francisco Iwao Hirata is a distinguished inventor whose work in substrate integrated waveguide technology has paved the way for advancements in electronic filtering and signal processing. His patents reflect a commitment to innovation and excellence in the field.