SP1ML Datasheet, PDF (12/27 Pages) STMicroelectronics – SPIRIT1 868 and 915 MHz low power RF modules with integrated microcontroller

Hardware design
SP1ML
of minimal width traces from pins 1, 2, 3, 4, 13 and 14 of the module if these are used. It is
appropriate to place the module toward the edge of the PCB with no traces or ground planes
from the antenna to the board edge.
Figure 4. Layout guidelines
No copper on any layer surrounding antenna, except
minimal traces from pins 1,2,3,4,13 and14
6 mm
min .
6 mm
min .
Flooded ground plane required
(signal traces allowed)
Application PCB
12/27
DocID026906 Rev 4