User's Manual

LE910 Hardware User Guide
1vv0301089 Rev.7 – 25-10-2015
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 51 of 88
7.3.2 RF Trace Losses
RF Trace losses are difficult to estimate on a PCB without having the appropriate tables or RF
simulation software to estimate what the losses would be. A good rule of thumb would be to keep the
RF traces as short as possible, make sure they are 50 ohms impedance and don’t contain any sharp
bends.
7.3.3 GNSS Antenna - Installation
 The LE910 due to its characteristics of sensitivity is capable to perform a Fix inside the
buildings. (In any case the sensitivity could be affected by the building characteristics i.e.
shielding).
 The Antenna must not be co-located or operating in conjunction with any other antenna or
transmitter. The isolation between GPS/GNSS antenna and main GSM/WCDMA/LTE antenna
must be at least 10 dB in all uplink bands.
 Antenna must not be installed inside metal cases.
 Antenna must be installed also according to the Antenna manufacturer instructions.