Design and Test of an Antenna Module Mock-Up for the EAST 4.6 GHz LHCD Launcher

The launcher of the 4.6 GHz lower hybrid current drive （LHCD） system for the Experimental Advanced Superconducting Tokamak （EAST） consists of 24 antenna modules, each composed of an array of 3 （row） × 8 （column） waveguides. In order to verify the radio frequency （RF） design and the feasibility of th...

Full description

Saved in:
Bibliographic Details
Published inPlasma science & technology Vol. 15; no. 8; pp. 834 - 839
Main Author 贾华 刘甫坤 刘亮 程敏 赵连敏 王晓洁 章家方
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Antennas
Design engineering
GHz
Launchers
Modules
Noise levels
Radio frequencies
Superconductivity
Tokamak devices
Waveguides
低杂波电流驱动
发射模拟
天线
模拟模块
测试
设计方法
输出波导
Online AccessGet full text

Cover

More Information
Summary:The launcher of the 4.6 GHz lower hybrid current drive （LHCD） system for the Experimental Advanced Superconducting Tokamak （EAST） consists of 24 antenna modules, each composed of an array of 3 （row） × 8 （column） waveguides. In order to verify the radio frequency （RF） design and the feasibility of the manufacturing process, a mock-up of the module has been fabricated and measured. The measured return losses of all three input waveguides are less than 25 dB at a frequency of 4.6 GHz. The transmission coefficients from the input waveguide to the output waveguides are 9.13 ± 0.2 dB and the insertion loss is 0.104 dB. These good results mean that the design method of the antenna module can be used for the new 4.6 GHz launcher on EAST. The detailed design of the multi-junction antenna module and its initial test result are described in this paper.
Bibliography:The launcher of the 4.6 GHz lower hybrid current drive （LHCD） system for the Experimental Advanced Superconducting Tokamak （EAST） consists of 24 antenna modules, each composed of an array of 3 （row） × 8 （column） waveguides. In order to verify the radio frequency （RF） design and the feasibility of the manufacturing process, a mock-up of the module has been fabricated and measured. The measured return losses of all three input waveguides are less than 25 dB at a frequency of 4.6 GHz. The transmission coefficients from the input waveguide to the output waveguides are 9.13 ± 0.2 dB and the insertion loss is 0.104 dB. These good results mean that the design method of the antenna module can be used for the new 4.6 GHz launcher on EAST. The detailed design of the multi-junction antenna module and its initial test result are described in this paper.
EAST; launcher; lower hybrid current drive
34-1187/TL
JIA Hua , LIU Fukun , LIU Liang , CHENG Min , ZHAO Lianmin , WANG Xiaojie , SHAN Jiafang Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1009-0630
DOI:10.1088/1009-0630/15/8/23