Analysis, Modeling, and Measurement of Shielding Effectiveness for a Cylindrical Waveguide with a Hexagonal Insert Structure

A theoretical model is presented for the shielding effectiveness of a waveguide containing an insert consisting of several smaller hexagonal or “honeycomb”-shaped waveguides. FEKO, an electromagnetic modeling software package, is used to create computer-aided design (CAD) models of physical waveguides, and to find solutions for the TE11 mode of propagation for each model using the Finite Element Method (FEM). S-parameters are used to characterize the shielding effectiveness of the waveguide models through simulation in FEKO and measurement of waveguide samples in the laboratory. The results obtained by each method are compared and discussed.