User's Manual

UL865-N3G Hardware User Guide
1VV0301177 Rev 2– 2015-04-20
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Reserved. Page 33 of 70
Mod. 0805 2011-07 Rev.2
7. Radio Section
7.5. TX Output Power
7.6. Sensitivity
7.7. Antenna Requirements
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-N3G V2 device shall
fulfill the following requirements:
UL865-N3G V2
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
(WCDMA)
70 MHz in WCDMA Band V
140 MHz in WCDMA Band II
Impedance
50 ohm
Input power
> 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)
Band Power Class
WCDMA FDD B2, B5
Class 3 (0.25W)
Band Typical Note
WCDMA FDD B2
-110 dBm
BER <0.1%
WCDMA FDD B5
-111 dBm
BER <0.1%