Weimin Sun is a notable inventor based in Nara, Japan, recognized for his contributions to digital filter systems. With a total of 12 patents to his name, he has made significant advancements in the field of signal processing.

Latest Patents

Among his latest patents is a digital filter system that utilizes a carrier reproduction circuit. This innovative system samples an input analog signal at a frequency that is four times that of the carrier frequency. The design includes a demultiplexer that sequentially outputs data to four systems, generating four zero carriers with equal frequencies and amplitudes, differing only in phase. Delay circuits are employed to manage the timing of these carriers, which are then processed by adaptive filters. The output from these filters is selected by a multiplexer, resulting in a single reproduced carrier signal. The system also incorporates a method for calculating filter coefficients using non-linear polynomials, optimizing performance through the least square method.

Career Highlights

Weimin Sun is currently employed at Icom Incorporated, where he continues to develop innovative technologies. His work has significantly impacted the field of digital signal processing, showcasing his expertise and dedication to advancing technology.

Collaborations

Some of his notable coworkers include Shigeki Kajimoto and Michio Nakajima, who contribute to the collaborative environment at Icom Incorporated.

Conclusion

Weimin Sun's contributions to digital filter systems exemplify his innovative spirit and technical expertise. His work continues to influence advancements in signal processing technology.

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