Design and Performance Research of High-stability Band-pass 3-D Artificial Electromagnetic Structure

A 3-D artificial electromagnetic structure based on square coaxial structure is proposed for meeting the stealth aircraft radome's requirements to realize the high-transmission and reduce the radar cross section (RCS) of antennas. This structure is implemented by synthetically utilizing the two-dimensional anisotropic design method and various modes of microwave resonance. Simulating calculation indicate the proposed structure has less-than 1.1dB insertion loss in the range of 9.0GHz-11.0GHz and more-than 10.0dB mean-reflectivity in the range of 1.0GHz-8.0GHz and 12.0GHz-20.0GHz, while keeping incident-angle stability and polarization consistency. The proposed artificial electromagnetic structure has important application values of engineering.