FN990
Family Hardware Design Guide
1VV0301752 Rev. 3 Page 63 of 92 2022-10-07
Not Sub
ect to NDA
7.3.2. Antenna Installation Guidelines
Each antenna must be installed with 20dB isolation.
Install the antenna in a location with access to the network radio signal.
The Antenna must not be installed inside metal cases.
The Antenna must be installed according to Antenna manufacturer instructions.
Antenna integration should optimize the Radiation Efficiency. Efficiency values >
50% are recommended on all frequency bands.
Antenna integration should not perturb the radiation pattern described in the
Antenna manufacturer documentation.
It is preferable to get an omnidirectional radiation pattern.
To meet the related EIRP limitations, antenna gain must not exceed the values
indicated in regulatory requirements, where applicable. The Typical antenna Gain
in most M2M applications does not exceed 2dBi.
If the device antenna is located farther than 20 cm from the human body and there
are no co-located transmitters, then the Telit FCC/IC approvals can be re-used by
the end product.
If the device antenna is located closer than 20 cm from the human body or there
are co-located transmitters, then additional FCC/IC testing may be required for
the end product (Telit FCC/IC approvals cannot be reused).
Note: GNSS receive path uses either the dedicated GNSS connector
or the shared Secondary AUX antenna connector.
GNSS Receiver
The FN990 Family integrates a GNSS receiver that can be used either in Standalone or in
A-GPS (assisted GPS) mode.
FN990 modems support active GNSS antennas.
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