Dual band metamaterial resonator of microwave propagation in rectangular waveguide structures

Based on the analysis of the Split Ring Resonators (SRR) cell structures, a dual-band microwave resonator was designed in this paper, with FDTD as a numerical simulation method (utilizing commercial simulation software CST). We analyzed the transmission characteristics of electromagnetic waves in the rectangular waveguide loaded with this device, and a summary of the electromagnetic field variation regularity in its dual-band resonant frequency points was also given in the paper. The test validation was completed on the standard rectangular waveguide excitation conditions. The data manifested that the test results coincided with the device simulation: there exists two resonance behavior at the frequency of 15.8 G and 22.1 G, with the stopband bandwidths of 900 M and 330 M respectively, which well proved and realized the dual-band resonant features.