GE863-PRO3 Hardware User Guide
1vv0300773a Rev. 0 - 24/01/08
This line of transmission shall fulfil the following requirements:
ANTENNA LINE ON PCB REQUIREMENTS
Impedance | 50 ohm |
Max Attenuation | 0,3 dB |
No coupling with other signals allowed
Cold End (Ground Plane) of antenna shall be equipotential to the
Furthermore if the device is developed for the US market and/or Canada market, 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 separation distance of at least 20 cm from all persons and must not be
6.2 GSM Antenna - PCB line Guidelines
•Ensure that the antenna line impedance is 50 ohm;
•Keep the antenna line on the PCB as short as possible, since the antenna line loss shall be less than 0,3 dB;
•Antenna line must have uniform characteristics, constant cross section, avoid meanders and abrupt curves;
•Keep, if possible, one layer of the PCB used only for the Ground plane;
•Surround (on the sides, over and under) the antenna line on PCB with Ground, avoid having other signal tracks facing directly the antenna line track;
•The ground around the antenna line on PCB has to be strictly connected to the Ground Plane by placing vias once per 2mm at least;
•Place EM noisy devices as far as possible from
•Keep the antenna line far away from the
•If you have EM noisy devices around the PCB hosting the
•If you don't have EM noisy devices around the PCB of
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved | page 34 of 64 |