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 36 of 77
6. Antenna(s)
The antenna connection and board layout design are the most important parts in the full
product design and they strongly reflect on the product’s overall performances. Read carefully
and follow the requirements and the guidelines for a proper design.
6.1. GSM/WCDMA Antenna Requirements
As suggested on the Product Description, the antenna for a Telit HC864-AUTO device must
fulfill the following requirements:
Furthermore if the device is developed for the US and/or Canada market, it must comply with
the FCC and/or IC approval requirements:
This device is to be used only for mobile and fixed application. In order to re-use the Telit
FCC/IC approvals the antenna(s) used for this transmitter must 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 antenna is installed with a separation
distance of less than 20 cm from all persons or is co-located or operating in conjunction with
any other antenna or transmitter then additional FCC/IC testing may be required. End-Users
must be provided with transmitter operation conditions for satisfying RF exposure compliance.
OEM integrators must ensure that the end user has no manual instructions to remove or install
the HC864-AUTO module. Antennas used for this OEM module must not exceed 2dBi gain
for mobile and fixed operating configurations.
GSM / WCDMA Antenna Requirements
Frequency range
Depending by frequency band(s) provided by the network operator,
the customer must use the most suitable antenna for that/those
band(s)
Bandwidth
GSM850 : 70 MHz
GSM900 : 80 MHz
GSM1800(DCS) : 170 MHz
GSM1900(PCS) : 140 MHz
WCDMA band I(2100) : 250 MHz
WCDMA band II(1900) : 140 MHz
WCDMA band IV(AWS) : 445 MHz
WCDMA band V(850) : 70 MHz
WCDMA band VIII(900) : 80 MHz
Impedance
50 Ohm
Input power
> 33dBm(2 W) peak power in GSM
> 24dBm Average power in WCDMA
VSWR absolute
max
<= 5:1(limit to avoid permanent damage)
VSWR
recommended
<= 2:1(limit to fulfill all regulatory requirements)