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연구

Research & Laboratory

제목
세미나 [08/13] Resonant Tunneling Diodes for THz Applications
작성일
2019.08.07
작성자
전기전자공학부
게시글 내용

< BK21 플러스 BEST 정보기술 사업단 세미나 개최 안내 > 


개최일시 : 2019년 8월 13일 (화) 14:00 ~ 15:00

개최장소 : 제 3공학관 C616호

세미나 제목 : Resonant Tunneling Diodes for THz Applications

내용 :

The terahertz wave has many possibilities for high-speed wireless communication, spectroscopic sensing, and non-destructive imaging. Moreover, the recent progress in photonic integration and semiconductor electronic device technology has enabled low-cost and compact solutions for commercial applications of the terahertz technology. The resonant tunneling diode (RTD) is an interesting device due to its negative differential resistance (NDR). The RTD can provide fundamental oscillation over 1THz at room temperature with a simple resonator and directly attached antenna. Moreover, the nonlinearity near the NDR region enables a compact terahertz detector with the same device. We present the recent advances of the RTD-based terahertz transmitter and detector technology. Based on a well-defined equivalent circuit model of the RTD, terahertz circuits such as mixers and oscillators have been integrated into a single chip. Impedance matching of the antenna to the RTD oscillator enhanced radiation and detection efficiencies of the transmitter and the detector, respectively. For sensing and imaging applications, we have developed very compact and easy-to-use discrete THz emitter and detector chips. These devices are produced with the standard semiconductor fabrication processes, and easily assembled in a widely used compact surface-mount package allowing vertical emission and detection of the THz wave. With these, we demonstrated non-destructive imaging and sensing of various materials through obstacles.


강연자 성함&직함 / 소속 : 김재영 박사 / 일본 Rohm Semiconductor 연구개발센터 

초청자 : 전기전자공학과 교수 최우영