User's Manual

HC864-AUTO Hardware User Guide
1vv0300946 Rev.4 – 2012-12-27
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 38 of 77
6.3.2. RX Diversity Antenna Requirements
The WCDMA RX diversity antenna for the Telit HC864-AUTO 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
WCDMA band I(2100) : 60 MHz ~
WCDMA band II(1900) : 60 MHz
WCDMA band IV(AWS) : 45 MHz
WCDMA band V(850) : 25 MHz
WCDMA band VIII(900) : 35 MHz
Impedance
50Ω
VSWR recommended
≤ 2:1
The second Rx antenna should not be located in the close vicinity of main antenna. In order to
improve Diversity Gain, Isolation and reduce mutual interaction, the two antennas should be
located at the maximum reciprocal distance possible, taking into consideration the available
space into the application.
6.4. GPS/GNSS Antenna Installation Guidelines
• The HC864-AUTO due to its characteristics of sensitivity is capable to perform a
Fix inside the buildings. (In any case the sensitivity could be affected by the
building characteristics i.e. shielding).
• The Antenna shall not be co-located or operating in conjunction with any other
antenna or transmitter.
• Antenna shall not be installed inside metal cases.
• Antenna shall be installed also according Antenna manufacturer instructions.