Novel theoretical analyses of transverse resonance technique on loaded impedance waveguide

A novel theoretical analysis of transmission characteristics of waveguide systems by using transverse resonance technique (TRT) is presented. The purpose of this study is to acquire a method which could simply analyze the propagation parameters of the slotted waveguide which is loaded with discrete impedance. The mathematical model is based on the equivalent transverse resonance circuit, in order to define the propagation condition, the fast/slow modes and losses in the fundamental mode. The result shows that the slotted waveguide will lose the fundamental mode if the loaded capacitive impedance is higher than 77pF/m. The different phase constant pattern of slow mode causes the fundamental mode to converge to the unusual direction and the loss increases rapidly. This novel technique has the advantage of simplicity and compares well with results of electromagnetic simulation and measurement.