A directional coupler for installation near the waveguide-array mouth in lower hybrid heating of plasma

1 July 1983

journal article
Published by IOP Publishing in Journal of Physics E: Scientific Instruments

Vol. 16 (7) , 715-718
https://doi.org/10.1088/0022-3735/16/7/034

Abstract

A new directional coupling system for a waveguide has been developed. The system is the combination of two loop elements on the narrow side of a waveguide and a coaxial 3 dB, 90 degrees hybrid coupler and can easily be installed on the waveguide-array mouth for launching a lower hybrid wave into plasma. An experimental test of the system was carried out near a frequency of 1250 MHz and the directivity was found to be about 20 dB.

Keywords

LOWER HYBRID WAVE
DIRECTIONAL COUPLER

This publication has 1 reference indexed in Scilit:

Radio frequency wave applications in magnetic fusion devices
Proceedings of the IEEE, 1981