Integration Guide

4117336 Rev 1.0 May 18, 2015 12
Hardware Integration Guide
RF Specification
3.3. WWAN Antenna Interface
The specification for the WWAN Antenna Interface of the AirPrime AR7552 embedded modules are
defined in the table below.
Table 9. AirPrime AR7552 WWAN Antenna Characteristics
Characteristics
WCDMA B5
LTE B5
WCDMA B2
LTE B2
LTE B4
LTE B7
LTE B17
Frequency (MHz)
TX
824-849
1850-1910
1710 – 1755
2500-2570
704 – 716
RX
869-894
1930-1990
2110 – 2155
2620-2690
734– 746
Impedance
RF
50 Ω
VSWR max
RX
2:1
TX
2:1
Maximum Voltage
Primary Antenna – 36 Volts
RX2 Antenna – 36 Volts (LTE MIMO: tbd)
Note: RX2 Antenna port is RX only, RX parameters in the above tables are also applicable.
Table 10. WWAN Antenna Interface Pads
Pad
Name
Direction
Function
BA11
GND
Primary Antenna Ground
BA12
PRIMARY_ANT
Input/Output
Primary Antenna Interface
BA13
GND
Primary Antenna Ground
BA7
GND
Diversity Antenna Ground
BA8
DIVERSITY_ANT
Input
Diversity Antenna Interface
BA9
GND
Diversity Antenna Ground
3.3.1. WWAN Antenna Recommendations
The table below defines the key characteristics to consider for antenna selection.
Table 11. AirPrime AR7552 WWAN Antenna Recommendations
Characteristics
WCDMA B5
LTE B5
WCDMA B2
LTE B2
LTE B4
LTE B7
LTE B17
Frequency (MHz)
TX
824-849
1850-1910
1710 – 1755
2500-2570
704 – 716
RX
869-894
1930-1990
2110 – 2155
2620-2690
734– 746
Impedance
RF
50 Ω
DC
10 kΩ ±1k
VSWR max
RX
1.5: 1
TX
1.5: 1
Polarization
Linear, vertical
Typical radiated gain
0 dBi in one direction at least