Radial mode analysis of electromagnetic wave propagation on slotted cylindrical structures

A systematic method to solve electromagnetic wave propagation problems associated with slotted cylindrical structures is to represent the field by a set of radial modes, the discontinuity by a multimode junction network, and to solve the transverse resonance equations. Derivations of the radial mode representation of the field and the network representation of a slot are provided. The application of this method to a slotted circular waveguide is also given, and its solutions show good agreement with previous findings.