Telit Wireless Solutions GE863-QUAD Manual Do Utilizador

 
 
 
 

 

 

 1vv0300715 Rev. 1 - 19/09/06  

  

Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved 

 

page 22 of 79 

 

5 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. 

5.1  GSM Antenna Requirements 

As suggested on the Product Description the antenna and antenna line on PCB for a Telit GE863-
QUAD/PY device shall fulfil the following requirements: 

 

Standard Dual Band GSM/DCS frequency 
range or  
Standard Quad Band GSM/DCS/PCS 
frequency range if used for all four bands 

80 MHz in GSM900, 70MHz in GSM850 & 
170 MHz in DCS & 140 MHz PCS band 

Gain < 3dBi 

50 ohm 

> 2 W peak power 

<= 10:1 

<= 2:1 

 
When using the Telit GE863-QUAD/PY, since there's no antenna connector on the module, the 
antenna must be connected to the GE863-QUAD/PY 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 GE863-QUAD/PY, then a PCB line is needed in order to connect with it or with 
its connector.  
 
This line of transmission shall fulfil the following requirements: 
 

50 ohm 

0,3 dB 

No coupling with other signals allowed 
Cold End (Ground Plane) of antenna shall be equipotential to 
the GE863-QUAD/PY ground pins 

 
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: