User's Manual

GE866-DUAL Hardware User Guide
1VV0301051 Rev. 2 – 2014-04-07 7
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 34 of 82
Mod. 0805 2011-07 Rev.2
7. Antenna
The antenna connection and board layout design are the most
important aspect in the full product design as they strongly
affect the product overall performance, hence read carefully
and follow the requirements and the guidelines for a proper
design.
7.1. GSM Antenna Requirements
As suggested on the Product Description the antenna and
antenna transmission line on PCB for a Telit GE866-QUAD device
shall fulfill the following requirements:
ANTENNA REQUIREMENTS
Frequency range
824
-
894 MHz GSM850 band
880-960 MHz GSM900 band
1710-1885MHz DCS1800 band
1850-1990MHz PCS1900 band
Impedance
50 Ohm
Input power
> 2 W
VSWR absolute max ≤ 10:1 (limit to avoid permanent damage)
VSWR recommended ≤ 2:1 (limit to fulfill all regulatory requirements)
Furthermore if the devices are developed for the US market
and/or Canada market they shall comply to the FCC and/or IC
approval requirements:
Those devices are to be used only for mobile and fixed
application. The antenna(s) used for this transmitter must be
installed to provide a separation distance of at least 20 cm
from all persons and must not be co-located or operating in
conjunction with any other antenna or transmitter. End-Users
must be provided with transmitter operation conditions for
satisfying RF exposure compliance. OEM integrators must ensure
that the end user has no manual instructions to remove or
install the GE866-QUAD. Antennas used for those OEM modules
must not exceed 3dBi gain for mobile and fixed operating
configurations.
7.1.1. GE866-QUAD Antenna – PCB line Guidelines
When using the Telit GE866-QUAD module, since there's no
antenna connector on the module, the antenna must be connected