Location History:
- Suwa, JP (2002)
- Okaya, JP (2002 - 2005)
Company Filing History:
Years Active: 2002-2005
Title: Satoru Hayashi: Innovator in Surface Acoustic Wave Technology
Introduction
Satoru Hayashi is a prominent inventor based in Okaya, Japan. He has made significant contributions to the field of surface acoustic wave (SAW) technology, holding a total of 3 patents. His innovative work focuses on enhancing the performance and characteristics of SAW filters.
Latest Patents
One of Hayashi's latest patents is the "Longitudinal double-mode saw filter utilizing electrode finger phase weighting." This invention provides a longitudinal double-mode SAW filter that boasts a large reflection coefficient due to the electrode conductors, while also maintaining flat pass band characteristics. The design incorporates nearly all higher-order natural mode oscillation displacements in the first and second interdigital transducer regions. The electrode finger phase weighting is strategically formed to correspond to a BPSK sign, allowing for effective phase changes at specific points in the electrode charge distribution function.
Another notable patent is the "Transverse double mode saw filter." This invention features a transversally coupled double-mode SAW filter that utilizes surface acoustic waves. It consists of two SAW resonators with curtain-like electrodes and reflectors on both sides, arranged in parallel on a piezoelectric flat plate. The innovative design of the electrodes allows for a broader passband width by utilizing the frequency difference between excited primary symmetric and anti-symmetric modes.
Career Highlights
Satoru Hayashi is currently employed at Seiko Epson Corporation, where he continues to develop cutting-edge technologies in the field of SAW devices. His work has significantly advanced the capabilities of SAW filters, making them more efficient and effective for various applications.
Collaborations
Hayashi has collaborated with notable colleagues, including Michiaki Takagi and Takashi Yamazaki. Their combined expertise has contributed to the successful development of innovative technologies in the field.
Conclusion
Satoru Hayashi's contributions to surface acoustic wave technology through his patents and work at Seiko Epson Corporation highlight his role as a leading inventor in this field. His innovative designs continue to push the boundaries of what is possible in SAW filter technology.