Study on transmission characteristics of trapezoidal-groove guide with mode-matching method

In this paper, the dispersion, cut-off and attenuation characteristics of t rapezoidal-groove guide are analyzed by using the mode-matching method. The relationships between the guided parameters and variations of relative gui de's sizes are discussed in detail. The calculated results are in good agre ement with those in relevant reference. So, the obtained conclusions have i mportant values in theoretical studies and actual applications of trapezoid al-groove guides for millimeter and submillimeter waves.