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Hardware Integration Guide
Parameter
Isolation between
Ant1 and Ant2 (S21)
Maximum Voltage
applied to antenna
Power handling
* These worst-case VSWR figures for the transmitter bands may not guarantee RSE levels to be within regulatory limits.
The device alone meets all regulatory emissions limits when tested into a cabled (conducted) 50Ω system. With antenna
designs with up to 2.5:1 VSWR or worse, the radiated emissions could exceed limits. The antenna system may need to be
tuned in order to meet the RSE limits as the complex match between the module and antenna can cause unwanted levels
of emissions. Tuning may include antenna pattern changes, phase/delay adjustment, passive component matching.
Examples of the application test limits would be included in FCC Part 22, Part 24 and Part 27, test case 4.2.16 for GSM
(ETSI EN 301 511), and test case 4.2.2 for WCDMA (ETSI EN 301 908-1), where applicable.
a Ant1—Primary, Ant2—Diversity (Diversity/MIMO/)
b Stated band ranges satisfy requirements for both Ant1 and Ant2.
1.4.
GNSS
The AirPrime AR758x Series include optional Global Navigation Satellite System (GNSS) capabilities
via the Qualcomm gpsOne Gen8C Engine, capable of operation in assisted and stand-alone modes
using GPS, GLONASS, Beidou, Galileo, and QZSS SVs.
Note:
Galileo support pending system / satellite deployment.
1.4.1.
GNSS Receiver
The table below summarizes the GNSS capabilities of the AirPrime AR758x Series.
Table 14.
GNSS Specifications
Parameter/Feature
GPS
GLONASS (FDMA)
Mode
Beidou
Galileo
41110461XXXX
Requirements
> 10 dB
36 Volts
> 2 W RF power on low bands
> 1 W on high bands
Rev 0.12
Comments
If antennas can be moved, test all
positions for both antennas.
Unless otherwise specified, this
isolation requirement need to be
maintained for optimum operation.
Make sure all other wireless devices
(Bluetooth or WLAN antennas, etc.) are
turned OFF to avoid interference.
Measure power endurance over 4
hours (estimated talk time) using a 2 W
CW signal — set the CW test signal
frequency to the middle of the PCS TX
band (1880 MHz for PCS).
Visually inspect device to ensure there
is no damage to the antenna structure
and matching components.
VSWR / TIS / TRP measurements
taken before and after this test must
show similar results.
Value
L1
L1OF
B1L
E1
January 16, 2017
Introduction
15
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