Design and testing of a 5 GHz TE₁₀-TE₃₀ mode converter mock-up for the lower hybrid antenna proposed for ITER

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• 作者：J. Hillairet ; ^{julien.hillairet@cea.fr} ; J. Achard ; C. Brun ; S. Rasio ; B. Soler
• 关键词：Lower hybrid ; Current drive ; LHCD ; ITER ; Mode converter
• 刊名：Fusion Engineering and Design
• 出版年：2012
• 期刊代码：22_09203796
• 类别：pw
• 出版时间：March, 2012
• 卷：87
• 期：3
• 页码：275-280
• 文件大小：1219 K

摘要

The design and overall dimensions of a 5 GHz TE₁₀-TE₃₀ mode converter are presented. This mode converter is a RF element of a 20 MW CW lower hybrid system proposed for ITER. A low power mock-up of this device has been manufactured at CEA/IRFM and measured at low power. RF measurements indicate a return loss of 40 dB and a transmission loss of 4.78 dB 卤 0.03 dB for the three outputs. The forward conversion efficiency from TE₁₀ mode to TE₃₀ has been measured from electric field probing to 99.9%. The good RF performances obtained validate the RF design of this element.