Location History:
- Daejeon, JP (2011)
- Daejeon, KR (2012 - 2023)
Company Filing History:
Years Active: 2011-2023
Title: Innovations by Woojin Chang in Electronics Engineering
Introduction
Woojin Chang is an accomplished inventor based in Daejeon, South Korea. With a remarkable portfolio of 19 patents, he has made significant contributions to the field of electronics and telecommunications. His work focuses primarily on enhancing signal processing and amplification technologies, which have wide-ranging applications in modern communication systems.
Latest Patents
Among his latest innovations, Chang has developed a frequency mixer that utilizes a non-linear circuit architecture. This frequency mixer is comprised of several components, including a first matching circuit that generates a matched local oscillator (LO) signal, and a non-linear circuit that transforms this matched signal into a non-linear LO signal. Furthermore, it includes additional matching circuits and mixing stages that ultimately produce an intermediate frequency (IF) signal through the incorporation of a non-linear transistor and bias transistor in series.
Another notable patent from Chang is his microwave amplification circuit. This design features an input stage with an input matching circuit and input attenuation circuit, allowing for optimal signal reception and gain management outside the operating frequency band. The amplification circuit utilizes a transistor to enhance the incoming signal and includes an output stage that maintains signal integrity while providing additional attenuation as necessary.
Career Highlights
Chang is currently affiliated with the Electronics and Telecommunications Research Institute, a respected organization known for its pioneering research in communication technologies. His role involves spearheading innovative projects and collaborating with fellow researchers to push the boundaries of electronic engineering.
Collaborations
Throughout his career, Woojin Chang has worked alongside notable colleagues, including Eun Soo Nam and Hae Cheon Kim. Together, they have collaborated on various projects that leverage their combined expertise in electronics, resulting in groundbreaking advancements that drive efficiency and performance improvements in telecommunications.
Conclusion
Woojin Chang’s contributions to the field of electronics are indicative of his expertise and dedication to innovation. With 19 patents to his name, his work is essential in developing new technologies that enhance communication systems. As he continues to collaborate with fellow researchers, Chang’s influence in electronics is sure to grow, leading to further innovations that will benefit the industry and society at large.