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 37 of 77
6.2. GSM/WCDMA Antenna - Installation Guidelines
• Install the antenna in a place covered by the GSM/WCDMA signal.
• The Antenna shall be installed to provide a separation distance of at least 20 cm
from all persons and must not be co-located or operating in conjunction with any
other antenna or transmitter;
• If the device antenna is located greater then 20cm from the human body and there
are no co-located transmitter then the Telit FCC/IC approvals can be re-used by
the end product.
• If the device antenna is located less then 20cm from the human body or there are
no co-located transmitter then the additional FCC/IC testing may be required for
the end product (Telit FCC/IC approvals cannot be reused)
• Antenna shall not be installed inside metal cases;
• Antenna shall be installed also according Antenna manufacturer instructions.
6.3. GPS/GNSS and RX diversity Antenna
Requirements
The HC864-AUTO supports the GPS/GNSS and WCDMA RX diversity receiver.
The HC864-AUTO module provides one RF PAD for GPS/GNSS and RX diversity.
So the HC864-AUTO requires a combined GPS/RX diversity antenna for the simultaneous
use of GPS/GNSS and WCDMA RX diversity.
6.3.1. GPS/GNSS Antenna Requirements
The customer shall use an external active antenna for the use of GNSS receiver.
The external active antenna for the Telit HC864-AUTO device must fulfill the following
requirements:
ACTIVE GPS/GNSS Antenna Requirements
Frequency range
1565 MHz ~ 1606 MHz
Gain
1.5 dBi < Gain < 4.5 dBi
Impedance
50 
VSWR
<= 2:1
Noise figure
<= 1.0 dB
Amplification
14 dB ~ 17 dB