Novel Efficient Strategy to Design an Optimized Microwave Shield

In this paper a novel approach to numerically design a MW shield is proposed. The strategy is based upon the interplay between a reduced model, formed by three periodical elements “teethes” in a waveguide, and a full model composed by an entire shield, a metallic cavity and the open space. A correlation criterion is implemented to avoid the divergence between the physical responses of the models. In order to save computational time, evaluation of less influent design variables is included, and a pre-optimization is performed. The compact range method has been experimentally applied to test the optimized MW shield. A comparison between computed and measured EM leakages is presented and discussed. Measured scattering parameter S21 is lower than -30 dB over the ISM frequency band, confirming the adequacy of the strategy.