Electromagnetic-wave excitation and diffraction by metal cylinder inside flat waveguide

Diffraction of Electromagnetic Waves by an Anisotropic Cylindrical Inhomogeneity in a Planar Waveguide

“…We note that the problems of diffraction of normal waves by a cylinder in a planar waveguide have already been given considerable attention [9,15,16]. In particular, diffraction of normal waves by a cylindrical inhomogeneity with a given surface impedance located in a planar waveguide with impedance boundaries was considered in [9].…”

“…In [15], algorithms for calculation of electromagnetic fields in the Rayleigh approximation and the short-wavelength approximation are given and the influence of a perfectly conducting cylinder on the radiation power of the dipole in the waveguide is estimated. The issues of interaction and transformation of two types of normal waves (TE and TM waves) at the boundary of an isotropic cylindrical inhomogeneity are examined in detail in [16]. Particular attention is given to an analysis of the influence of such an inhomogeneity on the energy characteristics of the radiation from the vertical electric dipole located in the waveguide.…”

“…Papers [15] and [16] are devoted to diffraction of electromagnetic waves by perfectly conducting and magnetodielectric cylinders, respectively, located in a planar waveguide with perfectly conducting walls. Exact analytical solutions of these problems in the form of double series are obtained and diffracted fields in the waveguide are analyzed.…”

“…Substitution of these solutions into Eqs. (15), (16), and (18) yields the following expressions for the potentials:…”