GE864 Hardware User Guide
1vv0300694 Rev.10 - 10/06/08
6 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.
6.1 GSM Antenna Requirements
As suggested on the Product Description the antenna and antenna line on PCB for a Telit GE864- QUAD / PY device shall fulfill the following requirements:
| ANTENNA REQUIREMENTS | |
|
|
|
Frequency range |
| Depending by frequency band(s) provided by |
|
| the network operator, the customer shall use |
|
| the most suitable antenna for that/those |
|
| band(s) |
Bandwidth |
| 70 MHz in GSM850, 80 MHz in GSM900, |
|
| 170 MHz in DCS & 140 MHz PCS band |
Gain |
| Gain < 3dBi |
Impedance |
| 50 ohm |
Input power |
| > 2 W peak power |
VSWR absolute |
| <= 10:1 |
max |
|
|
VSWR |
| <= 2:1 |
recommended |
|
|
When using the Telit
In the case that the antenna is not directly developed on the same PCB, hence directly connected at the antenna pad of the
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved | page 28 of 69 |
