The J J Thomson Medal for Electronics is awarded to Professor Mau-Chung Frank Chang, President of the National Chiao Tung University, Hsinchu, Taiwan. He is also the Wintek Distinguished Chair Professor in Electrical Engineering, UCLA Henry Samueli School of Engineering and Applied Science. Professor Chang realized MOCVD GaAs HBTs and CMOS Systems-on-Chip for RF-to-Terahertz radio, radar, imaging and interconnect applications. His research created new methodologies to design and fabricate reliable semiconductor heterojunction devices and new algorithms to sense/transmit/receive data with unprecedented bandwidth and resolution. He is a proven leader who has substantially shaped modern high-speed electronics. His work has influenced the design and production of modern day mobile phones. In 2016, more than 2.5 billion mobile-phones were shipped with GaAs-HBT amplifiers to fulfill required transmission linearity and efficiency.