Space wave leakage from higher order modes on various planar transmission line structures

The existence of space wave leakage from higher order modes on various planar transmission line structures is demonstrated by numerical results based on a rigorous mode-matching method. Transition characteristics between the bound-wave and leaky-wave regions of the higher order modes are illustrated and discussed for the first time. The leaky modes on the offset groove-guide structures and those on the planar transmission structures are compared.<<ETX>>