Company Filing History:
Years Active: 1984-1986
Title: Ryuichi Asai: Innovator in Surface Acoustic Wave Technology
Introduction
Ryuichi Asai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of surface acoustic wave technology, holding a total of 6 patents. His innovative work has advanced the capabilities of communication systems and signal processing.
Latest Patents
One of Ryuichi Asai's latest patents is a PSK demodulator using an asynchronous local oscillator. This demodulator utilizes a first output signal obtained from a local oscillator circuit that operates asynchronously with respect to the carrier phase of an inputted burst PSK signal. A second output signal, which is phase-shifted by 90 degrees relative to the first output signal, is multiplied by the inputted burst PSK signal using two multipliers. The output signals from these multipliers are then compared with reference voltages to classify the inputted burst PSK signal into four distinct level signals, facilitating effective demodulation.
Another notable patent is the Sezawa surface-acoustic-wave device using ZnO(0001)/SiO2. This device consists of a silicon substrate with a silicon dioxide layer and a zinc oxide layer. The design ensures that the crystalline surfaces of the layers are aligned to propagate surface acoustic waves efficiently from the input to the output electrodes.
Career Highlights
Ryuichi Asai is currently employed at Clarion Co., where he continues to innovate and develop new technologies. His work has been instrumental in enhancing the performance of various electronic devices and communication systems.
Collaborations
Throughout his career, Ryuichi has collaborated with notable colleagues, including Shoichi Minagawa and Takeshi Okamoto. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their respective fields.
Conclusion
Ryuichi Asai's contributions to surface acoustic wave technology and his innovative patents have established him as a key figure in the industry. His work continues to influence advancements in communication systems and signal processing.