Diffraction of a general surface wave mode by a surface reactance discontinuity

The scattering of a general hybrid surface wave mode at a reactance discontinuity, on a cylindrical surface waveguide, is considered both theoretically and experimentally. The theory leads to coupled Wiener-Hopf equations, which are solved approximately by assuming the hybrid modes to be mainly TE or TM. The theoretical expressions obtained are evaluated numerically for the symmetrical and dipole modes and compared with experimental results with which substantial agreement is obtained.