Location History:
- Zhudong Township, TW (2014 - 2015)
- Hsinchu County, TW (2016)
Company Filing History:
3 out of 7 
1 out of 1 Years Active: 2014-2016
Title: Innovations of Lee-Chuan Chang
Introduction
Lee-Chuan Chang is a notable inventor based in Zhudong, Taiwan. He has made significant contributions to the field of fiber-optic communication and MIMO systems. With a total of three patents to his name, Chang's work reflects his dedication to advancing technology.
Latest Patents
One of his latest patents is a fiber-optic communication apparatus capable of operating in both a normal mode and a power calibration mode. This apparatus includes first and second communication devices interconnected by an optical fiber cable. The first communication device converts either a calibration signal with a predetermined power level or a radio frequency (RF) signal into an optical signal. The second communication device then converts the transmitted optical signal back into an electrical signal, detects the power level associated with the calibration signal, and adjusts the power level of the electrical signal based on the detected power attenuation ratio.
Another significant patent is an expansion assembly for MIMO systems. This assembly is designed to increase the transmitting distance of a MIMO system. It comprises multiple RF front end units and power dividers and combiners that facilitate the delivery of signals polarized in different directions. This innovation allows for omni-directional transmission, thereby enhancing the overall transmission distance.
Career Highlights
Lee-Chuan Chang has worked with several companies throughout his career, including Transystem Inc. and Amoesolu Corporation. His experience in these organizations has contributed to his expertise in the field of communication technology.
Collaborations
Chang has collaborated with notable coworkers such as Wen-Jye Huang and Chuang-Chun Chiou. Their joint efforts have likely played a role in the development of his innovative patents.
Conclusion
Lee-Chuan Chang's contributions to fiber-optic communication and MIMO systems demonstrate his commitment to innovation in technology. His patents reflect a deep understanding of complex communication systems and their practical applications.