User's Manual

GE864
GE864GE864
GE864-
--
-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 31 of 71
7. Antenna
The antenna connection and board layout design are the most important part in the full
product design and they strongly reflect on the product overall performances, hence
read carefully and follow the requirements and the guidelines for a proper design.
7.1.
7.1.7.1.
7.1. GSM Antenna Requirements
GSM Antenna RequirementsGSM Antenna Requirements
GSM Antenna Requirements
As suggested on the Product Description the antenna and antenna line on PCB for a
Telit GE864-QUAD Automotive V2 device shall fulfill the following requirements:
ANTENNA REQUIREMENTS
ANTENNA REQUIREMENTSANTENNA REQUIREMENTS
ANTENNA REQUIREMENTS
Frequency range
Frequency rangeFrequency range
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
BandwidthBandwidth
Bandwidth 70 MHz in GSM850, 80 MHz in
GSM900, 170 MHz in DCS & 140 MHz
PCS band
Gain
GainGain
Gain Gain < 1,4dBi in GSM 850 & 900
and < 3,0dBi DCS & PCS
Impedance
ImpedanceImpedance
Impedance 50 ohm
Input power
Input powerInput power
Input power > 2 W peak power
VSWR absolute max
VSWR absolute maxVSWR absolute max
VSWR absolute max <= 10:1
VSWR recommended
VSWR recommendedVSWR recommended
VSWR recommended <= 2:1
When using the Telit GE864-QUAD Automotive V2, since there's no antenna connector
on the module, the antenna must be connected to the GE864-QUAD Automotive V2
through the PCB with the antenna pad.
In the case that the antenna is not directly developed on the same PCB, hence directly
connected at the antenna pad of the GE864-QUAD Automotive V2, then a PCB line is
needed in order to connect with it or with its connector.