NINA-B3 series - System integration manual
UBX-17056748 - R13 System description Page 15 of 72
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1.9.2 Integrated antenna – NINA-B3x2/B3x6
NINA-B3x2 and NINA-B3x6 modules are equipped with an integrated antenna on the module. This
simplifies the integration, as there is no need to do an RF trace design on the host PCB. By using
NINA-B3x2 or NINA-B3x6, the certification of NINA-B3 series modules can be reused, thus minimizing
the effort needed in the test lab. NINA-B3x2 modules use an internal metal sheet PIFA antenna, while
the NINA-B3x6 modules have a PCB trace antenna that uses antenna technology licensed from
Proant AB.
1.9.3 NFC antenna
NINA-B3 series modules include a Near Field Communication interface, capable of operating as a
13.56 MHz NFC tag at a bit rate of 106 kbps. As an NFC tag, data can be read from or written to the
NINA-B3 modules using an NFC reader; however, the NINA-B3 modules are not capable of reading
other tags or initiating NFC communications. Two pins are available for connecting to an external NFC
antenna: NFC1 and NFC2.
1.10 Reserved pins (RSVD)
Do not connect the reserved (RSVD) pin. The reserved pins are allocated for future interfaces and
functionality.
1.11 GND pins
Good connection of the module's GND pins with a solid ground layer of the host application board is
required for correct RF performance. It significantly reduces EMC issues and provides a thermal heat
sink for the module.
For information about ground design, see also Module footprint and paste mask and Thermal
guidelines.
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