Fibocom L831-EAU-01 - Antenna Design

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L831-EAU-01 Hardware User Manual Page
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Description
Condition
Test Result
GLONASS
Cold Start
30s / -130dBm
Warm Start
28s / -130dBm
Hot Start
1s / -130dBm
Sensitivity
GPS
Acquisition
-146dBm
Tracking
-160dBm
GLONASS
Acquisition
-143dBm
Tracking
-159dBm
Note:
The GNSS current is measured under RF disabled condition.
4.6 Antenna Design
The L831-EAU module provides main and diversity antenna interfaces, and the antenna design
requirements as shown in the following table:
L831-EAU module Main antenna requirements
Frequency range
The most proper antenna to adapt the frequencies should be used.
Bandwidth (WCDMA)
WCDMA band I(2100) : 250 MHz
WCDMA band VIII(900) : 80 MHz
Bandwidth (LTE)
LTE band 1(2100): 250 MHz
LTE Band 3(1800): 170 MHz
LTE band 7(2600): 190 MHz
LTE Band 8(900): 80 MHz
LTE band 20(800): 71 MHz
LTE Band 28(750): 100 MHz
Impedance
50 Ohm
Input power
> 25dBm average power WCDMA & LTE
Recommended
standing-wave ratio
(SWR)
≤ 2:1