Two Coaxial Lines Cross-Coupled To A Rectangular Waveguide

The boundary-value problem of two coaxial lines cross-coupled to a rectangular waveguide is solved. The techniques of Fourier transform, mode matching, image method and superposition are used to obtain an analytic solution. Residue calculus and Poisson's summation formula are employed to transform the solution into a fast convergent series that is numerically efficient. Computations are performed to verify the validity of the series solution.