Power Capacity Simulation and Experimental Study for the Frequency Selective Surface Structure

The thermostability problem of frequency selective surface (FSS) needs to be solved with the development of high power electronic countermeasure technology, and few reports are found at home and abroad. In this paper, the theory and simulation analysis of this problem are carried out, and the results are verified by the experimental results of typical samples. First of all, the heat resistance problem of the equivalent plate FSS and pure dielectric structure are modeled and analyzed based on the combination of electromagnetic field theory and classical heat transfer theory. Then, both the sandwich FSS plate structure and pure dielectric sandwich plate structure are analyzed under the microwave irradiation. The temperature rise effects are simulated caused by microwave radiation. Finally, the sandwich FSS and sandwich dielectric models are fabricated. The power withstand performances are tested in anechoic chamber. If each layer thickness of the sandwich dielectric is same, the temperature of sandwich FSS is higher.