Analysis of the compound slot array in a broadwall of a rectangular waveguide using Galerkin method

Compound slot array in a broadwall of a rectangular waveguide is rigorously analyzed employing the Galerkin method with global sinusoidal basis. Internal and external mutual coupling, wall thickness and higher order modes of the aperture electric field are taken into account. Calculated S-parameters and the radiation pattern of two compound slot arrays are compared with experimental data respectively. Excellent agreement is found, thus validating the accuracy of our method.