Minobu Okada

Title: Minobu Okada: Innovator in Satellite Broadcasting Technology

Introduction

Minobu Okada is a notable inventor based in Fukushima-ken, Japan. He has made significant contributions to the field of satellite broadcasting technology. With a total of 2 patents, Okada's work focuses on enhancing the efficiency and reliability of satellite communication systems.

Latest Patents

One of Okada's latest patents is a satellite broadcasting receiving tuner designed to inhibit interference caused by satellite broadcast signals that have a frequency one octave higher. This innovative tuner includes first and second tuners that receive satellite broadcasting signals from multiple channels within a higher frequency band. It features a local oscillator that oscillates at the same frequency as the desired reception signal, along with a higher harmonic wave attenuating device that ensures the fundamental wave is passed while attenuating higher harmonic waves. The design allows for a 90-degree phase shift between the local oscillation signals inputted to the first and second demodulators, resulting in effective baseband signal output.

Another significant patent is a delayed automatic gain control circuit. This circuit utilizes a simple delayed AGC voltage generation section, enabling it to fix the start point of AGC in the RF amplification section at a predetermined received signal level. This is achieved without requiring special adjustments, even when there are variations in circuit characteristics. The circuit comprises a tuner with an RF amplification section, an AGC voltage generation section, and an AGC voltage setting section that converts the AGC voltage into a delayed AGC voltage for the RF amplification section.

Career Highlights

Minobu Okada is currently employed at Alps Electric Co., Ltd., where he continues to innovate in the field of satellite technology. His work has been instrumental in advancing the capabilities of satellite communication systems.

Collaborations

Okada collaborates with Akira Takayama, contributing to the development of cutting-edge technologies in their field.

Conclusion

Minobu Okada's contributions to satellite broadcasting technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of the challenges in satellite communication and provide effective solutions to enhance signal reception and processing.