A wideband terahertz planar Schottky diode fourth-harmonic mixer with low LO power requirement
Received:December 07, 2019  Revised:August 17, 2020  download
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Author NameAffiliationE-mail
YANG Yi-Lin School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China yangyilin_uestc@sina.com 
ZHANG Bo School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China zhangbouestc@yeah.net 
JI Dong-Feng School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China jidongfenguestc@163.com 
WANG Yi-Wei School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China  
ZHAO Xiang-Yang National Key Laboratory of Application Specific Integrated Circuit, Hebei Semiconductor Research Institute, Shijiazhuang 050000, China  
FAN Yong School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China  
Abstract:A wideband terahertz fourth-harmonic mixer with low local oscillator (LO) power requirement based on anti-parallel planar Schottky diodes is proposed. In order to realize best performances of the mixer, the relations between the parasitic elements of Schottky diodes and the mixer’s performances are analyzed. The main parameters of Schottky diodes are optimized to reduce the optimum LO power of the fourth-harmonic mixer. Measured results show that the conversion loss of the proposed mixer based on specialized diodes is 14.2 ~ 20 dB within a wide band from 340 to 490 GHz with optimal LO power of 7 mW, while the noise temperature is 4020~ 17100 K in this frequency range.
keywords:Fourth-harmonic mixer  low local oscillator power  Schottky diode  terahertz band  wideband
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Copyright:《Journal of Infrared And Millimeter Waves》