A Comparative Study between Via-Hole and Via-Free Grounded Coplanar Waveguide to Microstrip Transitions on Thin Polymer Substrate

Figure 5

Transmission coefficient (dB) of the back-to-back transitions with only one via-hole (located 500 μm from both axes I and II; cf. Figure 3) for different diameters (50 μm, 100 μm, 200 μm, and 300 μm).