shows the RF placement and routing of the CC3220MODx module with external antenna.
Figure 10-2. RF Section Layout
Follow these RF layout recommendations for the CC320MODx device:
• RF traces must have 50-Ω impedance.
• RF trace bends must be made with gradual curves, and 90° bends must be avoided.
• RF traces must not have sharp corners.
• There must be no traces or ground under the antenna section.
• RF traces must have via stitching on the ground plane beside the RF trace on both sides.
• RF traces must be as short as possible. The antenna, RF traces, and the module must be on the edge of the
PCB product in consideration of the product enclosure material and proximity.
SWRS206E – MARCH 2017 – REVISED MAY 2021
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