Title: Terahertz Systems Made from Nanotechnologies
Speaker: Prof. Mau-Chung Frank Chang, National Chiao Tung University, Taiwan
The infamous “Terahertz Gap” represents frequency spectrum that ranges from 0.3 to 3THz (or 300 to 3000GHz). It lies between traditional microwave and infrared domains but remains “untouchable” via either electronic or photonic means. The conventional “transit-time-limited” electronic devices can hardly operate even at its lowest frequency; the “band-gap-limited” photonic devices on the other hand can only operate beyond its highest frequency. Since wavelengths range from 1000 to 100 μm, Terahertz signals tend to behave quasi-optically and are potentially instrumental for a wide range of scientific and industrial applications. Those include high-data rate, short distance and secured wireless & wireline communications, telemetric and remote sensing based on high-resolution radar, spectrometer and imagers for intelligent traffic/landing control, safety/security screening and bio-medical/food/drug sensing, and analysis and controls. In this talk, we will discuss fundamental & technical challenges involved in building Terahertz systems-on-chip from nano-dimensional CMOS technologies and progress made recently at UCLA and NCTU to overcome electronic/photonic barriers for realizing highly integrated (sub)-mm-Wave and Terahertz systems.
Dr. Mau-Chung Frank Chang is presently the President of National Chiao Tung University (NCTU), Hsinchu, Taiwan. Previously, he was the Chairman and Wintek Distinguished Professor of Electrical Engineering at UCLA (1997-2015).
Before joining UCLA, he was the Assistant Director and Department Manager of the High Speed Electronics Laboratory of Rockwell International Science Center (1983-1997), Thousand Oaks, California. In this tenure, he developed and transferred the AlGaAs/GaAs Heterojunction Bipolar Transistor (HBT) and BiFET (Planar HBT/MESFET) integrated circuit technologies from the research laboratory to the production line (later became Conexant Systems and Skyworks). The HBT/BiFET productions have grown into multi-billion dollar businesses and have dominated the cell phone power amplifier and front-end module markets for the past twenty years (currently exceeding 10 billion units/year and exceeding 50 billion units in the last decade). Throughout his career, Dr. Chang's research has primarily focused on the research & development of high-speed semiconductor devices and integrated circuits for RF and mixed-signal communication radio, radar, and imaging system applications.
Dr. Chang is a Member of the US National Academy of Engineering and an Academician of Academia Sinica, Taiwan, Republic of China. He recently has been elected as a Fellow of the US National Academy of Inventors. He is also a Fellow of IEEE. He has received numerous awards including Rockwell's Leonardo Da Vinci Award (Engineer of the Year, 1992), IEEE David Sarnoff Award (2006), Pan Wen Yuan Foundation Award (2008), CESASC Life-Time Achievement Award (2009) and John J. Guarrera Engineering Educator of the Year Award from the Engineers' Council (2014). He also received National Chiao Tung University's Honorary Doctorate of Engineering (2012), National Taiwan University's Distinguished Alumnus Award (2013), National Tsing Hua University's Honorary Doctorate of Engineering (2013).
Dr. Chang earned his B.S. in Physics from National Taiwan University (1972); M.S. in Materials Science from National Tsing Hua University (1974); Ph.D. in Electronics Engineering from National Chiao Tung University (1979).