*2.3.5 Measured result*

The prototype fabrication and measurement verify the proposed filter design using the Vector Network Analyzer (VNA). The photographic view of the structure for the top plane and ground plane is illustrated in **Figures 36** and **37**, respectively. It is found in **Figure 38** that simulation and measured S-parameter results are in good agreement. **Figure 39** shows the measured phase response almost linear in the passband region.

**Figure 35.** *Surface electric and Magnetic current distribution at 5.16 GHz.*

**Figure 36.**

*Photographic view of the Top plane of the Split-ring DGS with Open-stub.*
