Cavli Wireless C100QM/C10QM Hardware Manual
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other interference signals
✧
Antenna impedance traces require three-dimensional grounding and isolation on both
sides of the trace.
3.17.4 RF trace reference
For the user, the characteristic impedance of all RF signal lines should be controlled at
50Ω. The impedance of the RF signal line is determined by the diele
ctric constant of the
material, the trace width (W), the ground clearance (S), and the height (H) of the reference
ground plane. Use the impedance simulation tool to calculate the impedance of the RF
trace. The control of the PCB's characteristic impedance is usually done in microstrip and
coplanar waveguides.
Figure 3- 29 The complete structure of the two-layer PCB microstrip line