Beam waveguide reflector with integrated direction-finding antenna for in-situ alignment

被引：19

作者：

Kasparek, W

Idei, H

Kubo, S

Notake, T

机构：

[1] Natl Inst Fus Sci, Toki 5095292, Japan

[2] Univ Stuttgart, Inst Plasmaforsch, D-70569 Stuttgart, Germany

来源：

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES | 2003年 / 24卷 / 04期

关键词：

beam waveguide reflectors; directional couplers; alignment; direction-finding; gyrotron;

D O I：

10.1023/A:1022468412389

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：

An in-situ alignment system for beam waveguides based on an interferometric direction-finding antenna was investigated numerically and experimentally. The system consists of a reflector with four off-central positioned waveguide couplers in two directions. By nulling the difference of the power signals as well as the mixing signal from each coupler pair, spatial and angular alignments of a beam impinging on the mirror can be performed. In this paper, the characteristics of such a mirror are presented, and the design of a prototype intended for use in an ECH transmission line at LHD is described. Low-power as well as high-power tests at a frequency of 82.7 GHz were carried out, and the results are discussed. The device shows a high performance in agreement with theory.

引用

页码：451 / 472

页数：22

共 22 条

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