Integral staggered point-matching method for millimeter-wave reflective diffraction gratings on electron cyclotron heating systems

摘要

The reflective diffraction gratings are widely used in the high power electron cyclotron heating systems for polarization strategy. This paper presents a method which we call "the integral staggered point matching method" for design of reflective diffraction gratings. This method is based on the integral point matching method. However, it effectively removes the convergence problems and tedious calculations of the integral point-matching method, making it easier to be used for a beginner. A code is developed based on this method. The calculation results of the integral staggered point-matching method are compared with the integral point-matching method, the coordinate transformation method and the low power measurement results. It indicates that the integral staggered point-matching method can be used as an optional method for the design of reflective diffraction gratings in electron cyclotron heating systems. (C) 2016 Elsevier B.V. All rights reserved.