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

Figure 1

The studied back-to-back GCPW-MS-GCPW transitions with and without via-holes ( = 54 μm, = 25 μm, = 1 cm, = 1 mm, and = 1 mm).