Location History:
- Kyoto, JP (1996)
- Kusatsu, JP (2005)
Company Filing History:
Years Active: 1996-2005
Title: Sadao Kotera: Innovator in Tuner Circuits and Circuit Module Manufacturing
Introduction
Sadao Kotera is a notable inventor based in Kusatsu, Japan. He has made significant contributions to the field of electronics, particularly in tuner circuits and circuit module manufacturing. With a total of 2 patents, his work has had a meaningful impact on the industry.
Latest Patents
One of his latest patents is a tuner circuit that includes a variable attenuator circuit featuring a PIN diode. This circuit is positioned upstream of a variable-gain amplifier circuit and is controlled by the same Automatic Gain Control (AGC) voltage used for the amplifier. The design ensures that when an input RF signal reaches its maximum assumed level, the direct current flowing through the PIN diode remains below a threshold that would maximize intermodulation distortion.
Another significant patent is a method of manufacturing a circuit module. In this process, an electronic component is mounted on one major surface of a dual-side wiring substrate. A terminal is press-fitted into a mounting hole from the one major surface side for temporary fixation. Subsequently, an electronic component is mounted on the opposite surface after applying soldering paste. A frame with bent pieces is then positioned above the substrate, allowing for simultaneous soldering of the terminal, electronic component, and frame using a reflow method.
Career Highlights
Sadao Kotera is currently employed at Murata Manufacturing Co., Ltd., a leading company in the electronics sector. His innovative work has contributed to the advancement of electronic components and systems.
Collaborations
Throughout his career, Sadao has collaborated with notable coworkers such as Eiichi Hibino and Yoji Maeda. Their combined expertise has fostered a creative environment that encourages innovation.
Conclusion
Sadao Kotera's contributions to electronics through his patents and work at Murata Manufacturing Co., Ltd. highlight his role as a significant inventor in the field. His innovative designs continue to influence the development of advanced electronic systems.