Floor Plan; Rf Trace Specification - Ublox NINA-B3 Series System Integration Manual

B.1.1 Floor plan
This section describes where the critical components and copper traces are positioned on the
reference design.
1
2
3
Figure 31: NINA-B301/B311 antenna reference design
Reference Part
1 NINA-B301/B311
2 U.FL-R-SMT-1(10)
3 Carrier PCB
4 RF trace
5 GND trace
6 Copper keep-out
Table 15: Included parts in the antenna connector design
B.1.2 RF trace specification
The 50 Ω coplanar micro-strip dimensions used in the reference design are shown in
Table 16. GND stitching vias should be used around the RF trace to ensure a proper GND connection.
No other components are allowed within this area.
The solid GND layer beneath the 'top layer' shall surround at least the entire RF trace and connector.
No signal traces are allowed to be routed on the GND layer within this area but vias and small openings
are allowed.
Figure 32: Coplanar micro-strip dimension specification
UBX-17056748 - R13
C1-Public
Manufacturer Description
u-blox NINA-B3 module with antenna pin
Hirose Coaxial connector, 0 – 6 GHz, for external antenna
Should have a solid GND inner layer underneath and around the
RF components (vias and small openings are allowed)
Antenna coplanar microstrip, matched to 50 Ω
Minimum required top layer GND-trace. See also
Keep this area free from any copper on the top layer
Appendix
NINA-B3 series - System integration manual
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Figure 33.
Figure 32 and
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