Ka-Fai Un

Title: Innovator Spotlight: Ka-Fai Un from Macau

Introduction: Ka-Fai Un is a notable inventor based in Macau, China, recognized for his contributions to the field of digital calibration and electronics. With a total of four patents under his name, he has made significant advancements that benefit various technological applications, particularly in communication systems.

Latest Patents: Among his latest inventions, one patent stands out: a "Non-recursive digital calibration for joint-elimination of transmitter and receiver I/Q imbalances with minimized add-on hardware." This innovative digital calibration circuit effectively addresses I/Q imbalances by converting digital I and Q quadrature signals to analog signals for transmission. The design incorporates an output mixer and utilizes a local oscillator to ensure precision in the conversion process. Another noteworthy patent is for a "Wideband driver amplifier" featuring embedded passive filtering and gain peaking. This unique driver amplifier includes a voltage to current circuit, a passive band-selection filter, and a current to voltage circuit, demonstrating his commitment to advancing electronic functionality and efficiency.

Career Highlights: Ka-Fai Un’s career is marked by his professional engagement with the University of Macau, where he focuses on research and patents related to digital signal processing and electronic components. His work has implications for improving communication technologies through enhanced calibration methods and amplification processes.

Collaborations: Un collaborates with esteemed colleagues such as Pui-In Mak and Rui Paulo Da Silva Martins, contributing to the advancements in their respective fields and driving collective innovation within their projects. These partnerships have fostered an environment of shared knowledge and creativity.

Conclusion: Ka-Fai Un exemplifies the spirit of innovation through his impressive portfolio of patents and collaborations. His work continues to pave the way for advancements in digital calibration and electronic amplification, making a significant impact within the technology sector in Macau and beyond.