NINA-W1 series - System Integration Manual
UBX-17005730 - R07 System description Page 12 of 47
It is difficult to predict the actual matching values for the antenna in the final form factor. Therefore,
it is a good practice to have a placeholder in the circuit with a ”pi” network, with two shunt
components and a series component in the middle, to allow maximum flexibility while tuning the
matching to the antenna feed.
1.8.1.2 Approved antenna designs
NINA-W1 modules come with a pre-certified design that can be used to save costs and time during
the certification process. To take advantage of this service, you have to implement the antenna
layout according to the u-blox reference designs. The reference design is available on request from
u-blox.
The designer integrating a u-blox reference design into an end-product is solely responsible for the
unintentional emission levels produced by the end product.
The module may be integrated with other antennas. In this case, the OEM installer must certify his
design with respective regulatory agencies.
1.8.2 Integrated antenna – NINA-W102/W132/W152
The NINA-W102/W132/W152 modules are equipped with an integrated antenna on the module for
simpler integration.
1.9 Reserved pins (RSVD)
RSVD pins should be left unconnected.
1.10 GND pins
Good connection of the module's GND pins with solid ground layer of the host application board is
required for correct RF performance. It significantly reduces the EMC issues and provides a thermal
heat sink for the module.
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