User's Manual

GE864- QUAD Har dwar e User Guide

1vv0300872 Rev.1 2010-04-02

Furthermore if the device is developed for the US mar ket and/or Canada mar ket, it

shall comply to the FCC and/or IC approval requirements:

This device is to be used only for mobile and fixed application. The antenna(s) used

for this transmitter must be installed to provide a separ ation distance of at least 20

cm from all persons and must not be co- located or oper ating in conjunction with any

other antenna or transmitter. End- Users must be pr ovided with transmitter

oper ation conditions for satisfying RF exposure compliance. OEM integr ators must

ensure that the end user has no manual instr uctions to remove or install the GE864-

QUAD module. Antennas used for this OEM module must not exceed 3dBi gain for

mobile and fixed operating configurations.

7.2. GSM Antenna

PCB Line Guidelines

Ensure that the antenna line impedance is 50Ω;

Keep the antenna line on the PCB as shor t as possible, since the antenna

line loss shall be less than 0,3 dB;

Antenna line must have uniform character istics, constant cross section,

avoid meander s and abrupt cur ves;

Keep, if possible, one layer of the PCB used only for the Ground plane;

Sur r ound (on the sides, over and under) the antenna line on PCB with

Gr ound, avoid having other signal tracks facing directly the antenna line

track;

The ground around the antenna line on PCB has to be str ictly connected

to the Ground Plane by placing vias once per 2mm at least;

Place EM noisy devices as far as possible fr om GE864-QUAD antenna line;

Keep the antenna line far away from the GE864-QUAD power supply lines;

If you have EM noisy devices around the PCB hosting the GE864-QUAD

such as fast switching ICs, take care of the shielding of the antenna line

by bur ying it inside the layers of PCB and sur r ound it with Ground planes,

or shield it with a metal fr ame cover.

If you do not have EM noisy devices around the PCB of GE864-QUAD, by

using a strip- line on the superficial copper layer for the antenna line, the

line attenuation will be lower than a bur ied one;