Yoko Kawasumi

Title: Yoko Kawasumi: Innovator in Phase Locked Loop Technology

Introduction

Yoko Kawasumi is a prominent inventor based in Kanagawa, Japan. She has made significant contributions to the field of frequency synthesizers, particularly through her innovative patent related to phase locked loop technology. Her work has implications for various applications in electronics and communication systems.

Latest Patents

Yoko Kawasumi holds a patent for a "Wide lock range phase locked loop and method of operation." This invention involves a phase locked loop type frequency synthesizer that includes a phase/frequency comparator for receiving an input signal, a charge pump circuit, and a loop filter for generating a control voltage. The design features a voltage control oscillator block with multiple voltage controlled oscillators, a frequency divider, and a selecting circuit that activates only one of the oscillators. This innovation optimizes the output pulses of the frequency divider, enhancing the performance of the synthesizer.

Career Highlights

Kawasumi is currently employed at NEC Compound Semiconductor Devices, Ltd., where she continues to develop cutting-edge technologies. Her expertise in phase locked loops has positioned her as a key figure in her field. With a total of 1 patent, she exemplifies the impact that dedicated inventors can have on technology.

Collaborations

Throughout her career, Yoko has collaborated with notable colleagues, including Akira Kuwano and Yoshitaka Murata. These partnerships have fostered innovation and contributed to advancements in their shared field of expertise.

Conclusion

Yoko Kawasumi's contributions to phase locked loop technology highlight her role as an influential inventor in the electronics industry. Her innovative patent and ongoing work at NEC Compound Semiconductor Devices, Ltd. demonstrate her commitment to advancing technology.