8.2 Footprint and Layout Recommendation

Since the module does not contain an antenna, the module does not set any limits for the base board material selection or the board stack-up construction. The module does also not require a certain positioning on the board in relation to the board edge. The module must be placed away from interference sources on the base board like clock oscillators or step converters. The area underneath the module must be filled with a grounded copper plane. The RF-Pad area needs special attention. The following sections provide more information on that.

A typical design is supposed to connect the I/O ring to the base board while the antenna feeds are using the U.Fl connectors. Using the antennas in Approved External Antennas, the modular approval for the final product can be used without re-certification.