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 42 of 88
6.5 GSM/WCDMA/LTE Antenna Requirements
The antenna connection and board layout design are the most important aspect in the full
product design as they strongly affect the product overall performances, hence read carefully
and follow the requirements and the guidelines for a proper design.
The antenna and antenna transmission line on PCB for a Telit LE910 device shall fulfil the
following requirements:
ANTENNA REQUIREMENTS for LE910-EUG
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 (GSM/EDGE)
GSM900 : 80 MHz
GSM1800(DCS) : 170 MHz
Bandwidth
(WCDMA)
WCDMA band I(2100) : 250 MHz
WCDMA band V(850) : 70 MHz
WCDMA band VIII(900) : 80 MHz
Bandwidth
(LTE)
LTE band III(1800) : 170 MHz
LTE Band VII(2600) : 190 MHz
LTE Band XX(800) : 71 MHz
Impedance
50 ohm
Input power
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA & LTE
VSWR absolute max
≤ 10:1 (limit to avoid permanent damage)
VSWR recommended
≤ 2:1 (limit to fulfil all regulatory requirements)
ANTENNA REQUIREMENTS for LE910-NAG
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 (GSM/EDGE)
GSM850 : 70 MHz
GSM1900(PCS) : 140 MHz
Bandwidth
(WCDMA)
WCDMA band II(1900) : 140 MHz
WCDMA band V(850) : 70 MHz
Bandwidth
(LTE)
LTE Band II(1900) : 140 MHz
LTE Band IV(1700) : 445 MHz
LTE Band V (850) : 70 MHz
LTE Band XVII(700) : 42 MHz
Impedance
50 ohm
Input power
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA & LTE
VSWR absolute max
≤ 10:1 (limit to avoid permanent damage)
VSWR recommended
≤ 2:1 (limit to fulfil all regulatory requirements)