NINA-W1 series - System integration manual
UBX-17005730 - R11 Approvals Page 48 of 55
C1 - Public
5.2.3 Antenna requirements
In addition to the general requirement to use only authorized antennas, the u-blox grant also requires
a separation distance of at least 20 cm from the antenna to all persons. Also, the antenna must not
be co-located with any other antenna or transmitter (simultaneous transmission) as well. If this
cannot be met, a Permissive Change as described below must be made to the grant.
5.2.3.1 Separation distance
If the required separation distance of 20 cm cannot be fulfilled, a SAR evaluation must be performed.
This consists of additional calculations and/or measurements. The result must be added to the grant
file as a Class II Permissive Change.
5.2.3.2 Co-location (simultaneous transmission)
If the module is to be co-located with another transmitter, additional measurements for simultaneous
transmission is required. The results must be added to the grant file as a Class II Permissive Change.
5.2.3.3 Adding a new antenna for authorization
If the authorized antennas and/or antenna trace design cannot be used, the new antenna and/or
antenna trace designs must be added to the grant file. This is done by a Class I Permissive Change or
a Class II Permissive Change, depending on the specific antenna and antenna trace design.
• Antennas of the same type and with less or same gain as an already approved antenna can be
added under a Class I Permissive Change.
• Antenna trace designs deviating from the u-blox reference design and new antenna types are
added under a Class II Permissive Change.
⚠ Integrators who want to refer to the u-blox FCC ID / IC certification ID must send an email to the
support team email address for your area as listed in the Contact section to discuss the
Permissive Change Process. Class II Permissive Changes will be subject to NRE costs.
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