NEO-8Q / NEO-M8 - Hardware integration manual
UBX-15029985 - Production information Design Page 14 of 15
C1-Public
Figure 7: NEO-M8M module design with passive antenna, external LNA and SAW filter
The VCC_RF output can be used to supply the LNA with a filtered supply voltage.
☞ An external LNA is only required if the antenna is far away. In that case, the LNA must be placed
close to the passive antenna.
Figure 8: NEO-M8N/J/T/Q and NEO-8Q module design with passive antenna and an external LNA
The LNA_EN pin (LNA enable) can be used to turn on and off an optional external LNA.
The VCC_RF output can be used to supply the LNA with a filtered supply voltage.
☞ A standard GNSS LNA has enough bandwidth to amplify GPS/GLONASS/Galileo/BeiDou signals.
☞ An external LNA is only required if the antenna is far away. In that case the LNA must be placed
close to the passive antenna.
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