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Telit GE863-QUAD / GE863-PY
Hardware User guide
1vv0300697, Rev. ISSUE#0, - 21/11/05
Reproduction forbidden without Telit Communication written authorization – All Right reserved – Right of modification reserved
page 17 of 69
4 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.
4.1 Antenna Requirements
As suggested on the Product Description the antenna and antenna line on PCB for a Telit
GE863-QUAD device shall fulfil the following requirements:
ANTENNA REQUIREMENTS
Frequency range
Standard Dual Band GSM/DCS frequency
range or
Standard Quad Band GSM/DCS/PCS
frequency range if used for all four bands
Bandwidth
80 MHz in GSM & 170 MHz in DCS & 140
MHz PCS band
Gain
Gain < 3dBi
Impedance
50 ohm
Input power
> 2 W peak power
VSWR absolute
max
<= 10:1
VSWR
recommended
<= 2:1
When using the Telit GE863-QUAD, since there's no antenna connector on the module, the
antenna must be connected to the GE863-QUAD 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, then a PCB line is needed in order to connect with it or
with its connector.
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