Takatsugu Kamata

Title: The Innovations of Takatsugu Kamata

Introduction

Takatsugu Kamata is a prominent inventor based in Santa Clara, California. He has made significant contributions to the field of electronics, particularly in the development of advanced filter circuits and current sources. With a total of 13 patents to his name, Kamata's work has had a notable impact on the industry.

Latest Patents

One of Kamata's latest patents is the "Radio frequency inductive-capacitive filter circuit topology." This innovative filter circuit topology is designed for filtering radio frequency input signals. It incorporates one or more inductor devices, which can be discrete chip or air coils. The configuration of the inductor devices is center-tapped into a capacitor that is coupled to the ground. This design allows for the output voltage across the inductor devices to be split into two equal voltages of predetermined amplitude, determined by the quality factor of the filter circuit. Additionally, the circuit includes an input capacitor to receive the RF input signal and an output capacitor with variable capacitance, forming an inductive-capacitive (LC) filter capable of generating a filtered output signal for further transmission to a television tuner.

Another significant patent is the "MOSFET temperature compensation current source." This invention generates a constant current using metal oxide semiconductor (MOS) transistors. A biasing circuit creates a biasing current based on the transconductance of the MOS transistors. The load circuit, which consists of a resistor in parallel with a MOS transistor, generates a constant load current from the biasing current. This load current remains constant due to the offsetting variations of the resistor current and the MOS current across temperature or process variations. A current mirror circuit then generates an output current for the current source that is approximately constant in value.

Career Highlights

Throughout his career, Kamata has worked with several companies, including Rfstream Corporation and Ukom, Inc. His experience in these organizations has allowed him to refine his skills and contribute to various innovative projects.

Collaborations

Kamata has collaborated with notable individuals in the field, including Kimitake Utsunomiya and Kazunori Okui. These partnerships have further enhanced his work and led to the development of groundbreaking technologies.

Conclusion

Takatsugu Kamata is a distinguished inventor whose contributions to electronics have paved the way for advancements in filter circuits and