Figure 7
From: Center Frequency Stabilization in Planar Dual-Mode Resonators during Mode-Splitting Control

Typical perturbational behaviour of the inner and corner cuts with respect to the modes: (a) effect of each cut type on each mode, and (b) the combined effect of both cuts on each mode. In this example, the structure has a = 20 mm and W = 1 mm, with reference (unperturbed) frequency of 4.61 GHz.