Company Filing History:
Years Active: 1999-2000
Title: Innovations by Shigeru Hatada
Introduction
Shigeru Hatada, an inventive mind hailing from Tsurugashima, Japan, has made notable contributions to the field of radio technology through his innovative patents. With a total of two patents to his name, Hatada has focused on enhancing the performance and utility of AM radio receivers.
Latest Patents
Hatada's latest patents include a sophisticated AM radio receiver design and an electronic-tuning type radio-frequency tuning circuit. The AM radio receiver patent features a radio-frequency tuning circuit that utilizes a tuning coil along with variable capacitance diode elements, facilitating more precise tuning. The local oscillator circuit incorporates an oscillator coil and additional variable capacitance diode elements to enhance frequency modulation. This intricate design achieves optimal tuning through a variable voltage source, providing improved functionality in AM radio reception.
The second patent concerning the electronic-tuning type radio-frequency tuning circuit involves an innovative configuration of input and output tuning transformers. This design connects a pair of variable-capacitance diodes in parallel with the input transformer, creating a first tuning circuit, and utilizes a variable-capacitance element within the output transformer to establish a second tuning circuit. By ensuring that the Q-factor and resonant impedance of both circuits are aligned, Hatada's invention promotes efficient signal processing and superior performance.
Career Highlights
Shigeru Hatada is affiliated with Toko, Inc., a company recognized for its advancements in electronic components and systems. His work there has positioned him as a key player in the development of cutting-edge radio technologies, contributing greatly to improvements in communication devices.
Collaborations
Throughout his career, Hatada has collaborated with talented individuals such as Yukio Suzuki and Masami Osawa, enhancing the scope and impact of his inventions. This teamwork has led to significant innovations within the realm of radio frequency technology.
Conclusion
Shigeru Hatada's inventive contributions and patents stand as a testament to his expertise and commitment to advancing radio technology. His work not only reflects his talent as an inventor but also provides invaluable improvements to the functionality of AM radio receivers, highlighting the importance of innovation in everyday technology.