A Broadband Quasi-Optical Mode Converter for Sub-Terahertz Confocal Gyrotron Devices

被引：0
|
作者：
Guan, Xiaotong [1 ,2 ]
Fu, Wenjie [2 ,3 ]
Yang, Dongxuan [2 ,3 ]
Han, Meng [2 ,3 ]
Lu, Dun [2 ,3 ]
Yang, Tongbin [4 ]
Zhang, Chaoyang [2 ,3 ]
Yan, Yang [2 ,3 ]
Yuan, Xuesong [2 ,3 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China
[2] Terahertz Sci & Technol Key Lab Sichuan Prov, Chengdu 610054, Peoples R China
[3] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu 610054, Peoples R China
[4] Hunan Univ Sci & Technol, Sch Phys & Elect Sci, Xiangtan 411201, Peoples R China
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2021年 / 68卷 / 12期
关键词：
Mirrors; Gyrotrons; Broadband communication; Bandwidth; Frequency measurement; Simulation; Frequency conversion; Broadband; confocal waveguide; gyrotron; quasi-optical mode converter (QOMC); terahertz (THz); DESIGN;
D O I：
10.1109/TED.2021.3119911
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：
A broadband sub-terahertz quasi-optical mode converter (QOMC) that converts a TE06 confocal waveguide mode into a fundamental Gaussian mode has been realized and presented in this article. Simulation results predict that the QOMC could be operated in an extraordinarily broad bandwidth of 48 GHz (a relative bandwidth of 21.8% around 0.22 THz) when the output scalar Gaussian content is over 90%. Without phase correcting system, the vector Gaussian contents are larger than 75% in a frequency range of 24 GHz. In the low-power experiment, driven by a narrow-band confocal mode generator, the measurement results are consistent with the simulation results, demonstrating the feasibility of broadband operation. With the advantages of broad bandwidth, high conversion efficiency, and compact structure, this proposed QOMC can be applied to many kinds of confocal gyrotron devices.
引用
收藏
页码：6487 / 6491
页数：5
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