User's Guide

UL865 Hardware User Guide
1VV0301050 Rev 2 – 2013-10-09
The antenna connection and board layout design are the most important aspect in the full
product design as they strongly affect the product overall performances, hence read
carefully and follow the requirements and the guidelines for a proper design.
The antenna and antenna transmission line on PCB for a Telit UL865 device shall fulfill
the following requirements:
UL865-EUR & UL865-EUD
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 (GSM/EDGE)
80 MHz in GSM900
170 MHz in DCS 1800
Bandwidth
(WCDMA)
80 MHz in WCDMA Band VIII
250 MHz in WCDMA Band I
Impedance
50 ohm
Input power
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA
VSWR absolute max
≤ 10:1 (limit to avoid permanent damage)
VSWR recommended
≤ 2:1 (limit to fulfill all regulatory requirements)
UL865-NAR & UL865-NAD
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 (GSM/EDGE)
70 MHz in GSM850
140 MHz PCS 1900
Bandwidth
(WCDMA)
70 MHz in WCDMA Band V
140 MHz in WCDMA Band II
Impedance
50 ohm
Input power
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA
VSWR absolute max
≤ 10:1 (limit to avoid permanent damage)
VSWR recommended
≤ 2:1 (limit to fulfill all regulatory requirements)