User's Manual

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User Manual
– Antenna location is important; we recommend directing the antenna away from high-speed
switching signals. Furthermore, the trace from the module to the antenna should be as
short as possible and must be shielded by complete grounding.
– The M18Q2 is well shielded; the high-speed elements on a system should have shielding
reserved during the early stages of development.
3.5. Radiated sensitivity measurement
Over-the-air testing can demonstrate the TRX ability of the whole system. Keys elements that affect the
measurement are:
Module ability (refer Specification)
Antenna Gain
System noise source
The OTA performance should be performed in an OTA chamber.
3.6. GNSS external circuit design
One GNSS SAW filter, LNA, and another GNSS SAW filter need to be used between the module and
antenna. in129 GPIO05Pin129 GPI
3.7. Supported frequencies
Table 5. Band support
Band
Uplink (MHz)
Downlink (MHz)
LTE Band 2
1,850–1,910
1,930–1,990
LTE Band 4
1,710–1,755
2,110–2,155
LTE Band 5
824–849
869–894
LTE Band 12
699–716
729–746
Band
Uplink (MHz)
Downlink (MHz)
WCDMA Band 2
1,850–1910
1,930–1,990
WCDMA Band 5
824–849
869–894