Quectel BG77 - Page 59

LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 55 / 76
Figure 25: Coplanar Waveguide Line Design on a 2-layer PCB
Figure 26: Coplanar Waveguide Line Design on a 4-layer PCB (Layer 3 as Reference Ground)
Figure 27: Coplanar Waveguide Line Design on a 4-layer PCB (Layer 4 as Reference Ground)