Location History:
- Hamura, JP (2006)
- Tokyo, JP (2016)
Company Filing History:
Years Active: 2006-2016
Title: Ichiro Somada: Innovator in High Frequency Integrated Circuits
Introduction
Ichiro Somada is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of high frequency integrated circuits, holding a total of 3 patents. His work focuses on enhancing the performance and efficiency of electronic devices.
Latest Patents
Somada's latest patents include a high frequency integrated circuit and a device using the same. This invention provides an amplifier with a test oscillator for monitoring high frequency characteristics. It is designed to minimize power loss during normal operation while ensuring excellent noise performance. The amplifier can accommodate both a transmitter IC and a receiver IC. In this high frequency IC, the test oscillator utilizes the inductive load of the amplifier, allowing for efficient operation. The amplifier features a bias voltage terminal that switches its operation state between active and inactive, while the oscillator has a similar bias voltage terminal. In test operation mode, the amplifier is deactivated, and the test oscillator is activated. Conversely, in normal operation mode, the amplifier is activated, and the test oscillator is deactivated.
Another notable patent is a bias circuit that includes a first p-n junction element supplied with current from a first current source. This current source is connected to the low-voltage side of the first p-n junction element and the base terminal of a second transistor. A second p-n junction element is also supplied with current from a second current source, which is connected to the low-voltage side of the second p-n junction element and the base terminal of a first transistor. The first and second transistors are connected at their emitter terminals to a third current source, receiving base voltages generated by the first and second p-n junction elements, respectively. The second and first transistors form a differential pair, where a current with a temperature coefficient that is substantially double that of the second current source is obtained at the collector terminal of the second transistor.
Career Highlights
Ichiro Somada is currently employed at Hitachi, Ltd., where he continues to innovate in the field of electronics. His work has significantly impacted the development of high frequency integrated circuits, making them more efficient and reliable.
Collaborations
Somada has collaborated with notable colleagues, including Takao Okazaki and Shinya Kajiyama. Their combined expertise has contributed to advancements in their respective fields.
Conclusion