A multilayer radome wall structure with passbands having odd times of selected central frequencies

This study focuses on the design of a flat multilayer radome wall structure with passbands having odd times of selected central frequencies. The multilayer structure comprises an odd multiple of five or more layers. And each layer, except for the central layer, is designed as an electromagnetic matching layer at the design frequency, which can be arbitrarily selected. Investigations suggest that the multilayer structure exhibits multiband transmission property, and the central frequency of each passband is an odd multiple of the design frequency. The central-layer thickness, as the results indicate, can be dimensioned in the range from 0.1 to 6 wavelengths to fulfill the requirements of mechanical performances without compromising the transmission capability. Results also show that the multilayer structure at a design frequency of 65 GHz turns to be a broadband radome wall structure in the 16-100 GHz frequency range for both centimeter and millimeter waves applications.