A Low-Voltage, Premodulation Terahertz Oscillator Based on a Carbon Nanotube Cold Cathode

被引:10
作者
Xu, Xiaotao [1 ]
Yuan, Xuesong [1 ]
Chen, Qingyun [1 ]
Cole, Matthew T. [2 ]
Zhan, Yu [3 ]
Xie, Jie [1 ]
Yin, Yong [1 ]
Li, Hailong [1 ]
Yan, Yang [1 ]
机构
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China
[2] Univ Bath, Dept Elect & Elect Engn, Bath BA2 7AY, Avon, England
[3] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Peoples R China
基金
中国国家自然科学基金;
关键词
Carbon nanotube (CNT); cold cathode; modulated current; oscillator; terahertz; TUBE;
D O I
10.1109/TED.2020.2968932
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
To develop miniaturized and compact vacuum electron devices, new approaches to device manufacturing must be embraced. Here, a terahertz oscillator based on carbon nanotube (CNT) cold cathode is investigated through particle-in-cell (PIC) simulations. The studies show that the high-frequency (HF) field excited by the device can modulate the field emission current efficiently, with an output power of 4.6 W at 139.4 GHz obtained at an operating voltage of 2.9 kV and an initial emission current and current density of 15.8 mA and 7.65 A/cm(2), respectively, and the efficiency is 10.0%.
引用
收藏
页码:1266 / 1269
页数:4
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