User's Guide
xE922-3GR Hardware User Guide
1VV0301272 Rev.0.8 2017-01-05
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Reserved. Page 93 of 112
16.2. WiFi/BT Antenna Requirements
Antenna recommended specification:
· Frequency: 2.4-2.5GHz
· Gain (peak): 2.3 dBi
· VSWR : max 1.8
· Return loss : max -10 dB
· Radiation : omni directional
· Polarization : linear vertical
· Power handling : 1W
· Impedance 50 ohm
16.3. GNSS Antenna Requirements
The GNSS subsystem of xE922-3GR module is visualized on below block diagram.
The module features ‘internal’ pre-LNA_SAW / LNA / post-LNA_SAW RF chain in front of
the GNSS receiver.
Two possible GNSS antenna scenarios are possible on the application main board:
· Internal ‘passive’ antenna
· External ‘active’ antenna
Both scenarios are drawn in the figure, only one should be applied.