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6.2 RF Pad Design
We recommend that a ground not be present under the surface of the RF pads in the
layout. Details are included below. Layer 2 has the same exclusion area as Layer 1.
Figure 6-1.
Sample RF pad layout
The RF trace between RF pads and antenna should as shorter as possible with 50ohm
characteristic impedance.
The characteristic impedance depends on the dielectric of PCB, the track width and the
ground plane spacing. Coplanar Waveguide type is required. The detail simulation as below.
