Periodically slotted dielectrically filled parallel-plate waveguide as a leaky-wave antenna: E-polarization case

The analysis of a periodically slotted dielectrically filled parallel-plate waveguide as a leaky-wave antenna for infinite and finite periodic structu res for the E-polarization case is discussed. For the analysis of the infin ite periodic structure, an integral equation in which Floquet's modes and t he strip electric current satisfying the edge condition are used and Bloch wave analysis using the single-slot equivalent circuit parameters are used. Integro differential equation with moment-method and transmission-line ana lysis with equivalent circuit representation are used to analyze the finite N-periodic structure. Results of interest such as complex propagation cons tant and the radiation pattern for the finite slot number case are observed to be in good agreement with those of the infinite geometry case for the a ppropriately chosen values of slot numbers, slot width, period, and wavegui de height.