Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna

doi:10.1088/2058-6272/ac3806

	Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna
	Chen, Gen; Mao, Yuzhou; Yuan, Shuai; Zhao, Yanping; Yang, Hua; Zhang, Xinjun; Qin, Chengming; Cheng, Yan; Wang, Yongsheng
刊名	PLASMA SCIENCE & TECHNOLOGY
	2022
卷号	24
关键词	decoupler ICRF adjustable capacitor EAST
ISSN号	1009-0630
DOI	10.1088/2058-6272/ac3806
通讯作者	Chen, Gen(chengen@ipp.ac.cn) ; Mao, Yuzhou(maoyz@ipp.ac.cn)
英文摘要	The Ion Cyclotron Radio Frequency (ICRF) heating antenna on EAST adopts a decoupling device to constrain power coupling among the radiation straps, which was discovered shortcomings such as long size, poor contact, and etc. In order to improve these weak points, a new type decoupler with terminal-loaded tunable capacitor is designed to replace the previous design. Besides the capability of the tunable admittance parameters of decoupler, the withstand voltage of the capacitor is the most significant consideration for working under high power. Therefore, the theoretical analysis carefully elaborates the capacitor withstand voltage, and the detailed analytical equations and criteria for design are given. After the comparative analysis of theoretical calculation and 3D simulation results, the decoupler design scheme is finalized. The capacitor-loaded decoupler has been successfully adopted for ICRF antenna at port N on EAST, and achieved the optimization of adjacent port isolation from -22 to -58 dB at 37 MHz without plasma to restrict mutual coupling. The new design of the decoupler has greatly improved its compactness and automatic adjustment performance, and could be good solution for the decoupling network of ICRF antennas.
资助项目	National Natural Science Foundation of China[11775258]
WOS关键词	POWER
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000727690700001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/126764]
专题	中国科学院合肥物质科学研究院
通讯作者	Chen, Gen; Mao, Yuzhou
作者单位	Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Chen, Gen,Mao, Yuzhou,Yuan, Shuai,et al. Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24.
APA	Chen, Gen.,Mao, Yuzhou.,Yuan, Shuai.,Zhao, Yanping.,Yang, Hua.,...&Wang, Yongsheng.(2022).Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna.PLASMA SCIENCE & TECHNOLOGY,24.
MLA	Chen, Gen,et al."Design of improved compact decoupler based on adjustable capacitor for EAST-ICRF antenna".PLASMA SCIENCE & TECHNOLOGY 24(2022).