Axial symmetric wave diffraction by a circular waveguide cavity

In this paper, we consider a three-dimensional (3-D) cavity formed by a finite circular waveguide with a planar termination at the open end, and analyze the axial symmetric diffraction problem by means of the Wiener-Hopf technique. The method of solution is similar to that we have developed for the analysis of parallel-plate waveguide cavities but is more complicated because of the cylindrical geometry.