User's Manual

LE910 Hardware User Guide
1vv0301089 Rev.3 09-06-2014
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 42 of 79
DIVERSITY ANTENNA REQUIREMENTS for LE910-NVG
Frequency range
Depending by frequency band(s) provided by the network operator, the
customer shall use the most suitable antenna for that/those band(s)
Bandwidth
(WCDMA)
WCDMA band II(1900) : 140 MHz
WCDMA band V(850) : 70 MHz
Bandwidth
(LTE)
LTE Band IV(1700) : 445 MHz
LTE Band XIII(700) : 41 MHz
Impedance
50 ohm
VSWR recommended
≤ 2:1 (limit to fulfil all regulatory requirements)
DIVERSITY ANTENNA REQUIREMENTS for LE910-SVG
Frequency range
Depending by frequency band(s) provided by the network operator, the
customer shall use the most suitable antenna for that/those band(s)
Bandwidth
(LTE)
LTE Band IV(1700) : 445 MHz
LTE Band XIII(700) : 41 MHz
Impedance
50 ohm
VSWR recommended
≤ 2:1 (limit to fulfil all regulatory requirements)
DIVERSITY ANTENNA REQUIREMENTS for LE910-SKG
Frequency range
Depending by frequency band(s) provided by the network operator, the
customer shall use the most suitable antenna for that/those band(s)
Bandwidth
(LTE)
LTE band III(1800) : 170 MHz
LTE Band V (850) : 70 MHz
Impedance
50 ohm
VSWR recommended
≤ 2:1 (limit to fulfil all regulatory requirements)
When using the LE910, since there's no antenna connector on the module, the antenna must be
connected to the LE910 antenna pad (F1) by means of a transmission line implemented on the
PCB.
In the case the antenna is not directly connected at the antenna pad of the LE910, then a PCB
line is needed in order to connect with it or with its connector.
The second Rx antenna should not be located in the close vicinity of main antenna. In order to
improve Diversity Gain, Isolation and reduce mutual interaction, the two antennas should be
located at the maximum reciprocal distance possible, taking into consideration the available
space into the application.