Coupling between coaxially fed monopoles in a parallel-plate waveguide

Electromagnetic coupling between coaxially fed monopoles in a parallel-plate waveguide is investigated. The boundary-value problem of monopoles in a parallel-plate waveguide is solved using the Fourier transform, mode matching, and superposition. Residue calculus is used to represent the solution in a fast convergent series. Our numerical results agree favorably with Computer Simulation Technology Microwave Studio (CST MWS) simulation results.