Company Filing History:
2 out of 291 
1 out of 1,197 Years Active: 2016-2019
Title: Che-Hao Chang: Innovator in Antenna and Power Supply Technologies
Introduction
Che-Hao Chang is a notable inventor based in Taipei, Taiwan. He has made significant contributions to the fields of antenna technology and power supply systems. With a total of 3 patents to his name, his work reflects a commitment to innovation and practical solutions.
Latest Patents
One of his latest patents is the "Signal line conversion structure of antenna array." This invention features a signal line conversion structure positioned between the antenna array and the circuit substrate. It includes a first dielectric substrate on the circuit substrate and a second dielectric substrate that is vertically disposed and divided into two regions. The second dielectric substrate supports the antenna array, and at least one signal line connects the circuit substrate to the antenna array. Additionally, a metal connecting plate with multiple metal through holes connects the ground layers of both dielectric substrates.
Another significant patent is the "Power supply apparatus with protection function and redundant power supply system." This apparatus incorporates a pulse width modulation control unit, a detecting unit, a switch unit, and a feedback circuit. The feedback circuit monitors the bus voltage and communicates with the control unit to adjust the duty cycle of the pulse width modulation signal. This system is designed to prevent reverse current phenomena by turning off the switch unit when necessary.
Career Highlights
Che-Hao Chang has worked with prominent organizations such as Chicony Power Technology Co., Ltd. and National Yang Ming Chiao Tung University. His experience in these institutions has allowed him to develop and refine his innovative ideas.
Collaborations
Some of his notable coworkers include Tzu-Hung Wang and Zhi-Hong Lu. Their collaboration has likely contributed to the advancement of technology in their respective fields.
Conclusion
Che-Hao Chang's contributions to antenna and power supply technologies demonstrate his innovative spirit and dedication to improving existing systems. His patents reflect a deep understanding of engineering principles and a commitment to practical applications.