Study and application of single-cavity model of coupled cavity structure

In the simulation of high frequency characteristics of coupled cavity structure, the quasi-period boundary method is usually adapted for its high precision. However, the fake solution exists in the double-cavity simulation model. In this paper, the single-cavity simulation model is proposed and studied. This model eliminates, the fake solution and reduces the mesh number by 62% and the total simulation time by 56%, while maintaining the calculation precision. Italso provides an effective way to calculate the dispersion characteristics and interaction impedance, which is favorable for the optimization of structure dimensions. The influences of structure dimensions on the high frequency characteristics are also analyzed with this model.