It is critical to follow the recommendations listed below to achieve the best RF
performance:
- The board must have a solid
ground plane. The center ground pad of the device must be solidly connected to
the ground plane by using a 3x3 grid of vias.
- To avoid electromagnetic field blocking, keep any large metal objects as far
away from the antenna as possible.
- Do not enclose the antenna within a metal shield.
- Keep noise-radiating components
or signals, within the 2.4 GHz to 2.5 GHz frequency band, away from the antenna
and shield those components if possible. Any noise radiated from the host board
in this frequency band degrades the sensitivity of the chip.