Kazunao Urata

Title: Kazunao Urata: Innovator in Demodulation Technology

Introduction

Kazunao Urata is a notable inventor based in Tondabayashi, Japan. He has made significant contributions to the field of demodulation technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of modulation signals.

Latest Patents

Urata's latest patents include a demodulation apparatus that performs different frequency control functions. This invention processes a QPSK modulation signal through frequency conversion into an IF signal, utilizing a channel selection circuit. The signal is then converted into a baseband signal by a quadrature demodulator. The baseband signal undergoes wave shaping by DTFs before being sent to a carrier recovery circuit. An offset frequency of the IF signal is compensated for by a baseband frequency converter, which includes a complex multiplier and a DVCO. The frequency tracking circuit ensures that the operating frequency of another DVCO does not exceed a specified range. This innovation effectively controls frequency deviation in the spectrum of signals input to the DTFs.

Another significant patent is a channel selecting apparatus designed for simultaneous use with both modulation signals. This apparatus selects modulation signals received at different channels, where continuous phase modulation signals and digital modulation signals coexist. The design accounts for frequency shifts experienced by modulation signals due to their propagation on the same transmission path. This allows for precise control of the digitally modulated IF signal's frequency, focusing it into a narrow range around the synchronous pull-in frequency of the digital demodulating circuit.

Career Highlights

Kazunao Urata is currently employed at Matsushita Electric Industrial Co., Ltd. His work at this esteemed company has allowed him to develop and refine his innovative ideas in demodulation technology. His contributions have been instrumental in advancing the capabilities of communication systems.

Collaborations

Urata has collaborated with notable coworkers, including Hiroshi Saka and Shigeru Soga. Their combined expertise has fostered an environment of innovation and creativity, leading to the development of groundbreaking technologies.

Conclusion

Kazunao Urata's contributions to demodulation technology exemplify the impact of innovative thinking in the field of communications. His patents reflect a commitment to enhancing signal processing and modulation techniques.