Application of planar antenna in field-effect transistor terahertz detectors

被引：5
|
作者：
Wang Xiao-Dong [1 ,3 ]
Yan Wei [1 ]
Li Zhao-feng [1 ,2 ,3 ]
Zhang Bo-wen [1 ,2 ]
Huang Zhen [1 ,2 ]
Yang Fu-hua [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Engn Res Ctr Semicond Integrated Technol, Beijing 100083, Peoples R China
[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[3] Univ Chinese Acad Sci, Sch Microelect, Beijing 100049, Peoples R China
[4] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
来源：
CHINESE OPTICS | 2020年 / 13卷 / 01期
关键词：
FET THz detectors; planar antenna; grating-gate; responsivity; noise equivalent power; RESONANT DETECTION; PLASMON MODES; RADIATION; SUBTERAHERTZ; ABSORPTION; EMISSION; WAVES;
D O I：
10.3788/CO.20201301.0001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In order to improve the responsivity and reduce the noise equivalent power of Field-Effect Transistor (FET) THz detectors, a suitable planar antenna structure is necessary. In this paper. we investigate the research progress of FET THz detectors integrated with planar antenna structures. Firstly, we analyze the working principle of FET THz detectors and clarify that an integrated planar antenna could effectively improve the detector's performance by enhancing its coupling efficiency with terahertz waves. Secondly, we present some typical planar antennas and discuss their pros and cons. These include the dipole antenna, the patch antenna. the slot antenna, the grating-gate, and others, which are each compared with respect to responsivity for the detectors. Finally, we find that the responsivity of the FET THz detectors can be greatly improved when applying planar antenna structure and that each type of antennas contributes uniquely. This work introduces several planar antennas integrated into FET THz detectors. including the performance and research progress of various antennas. Some existing problems are described and some predictions of the future development trends for this technology are summarized.
引用
收藏
页码：1 / 13
页数：13
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