Fibocom L850-GL - 4.6 Antenna Design

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L850-GL Hardware User Manual Page 48 of 54
Description Condition Test Result
Warm start 34s / -130dBm
Hot Start 2s / -130dBm
GLONASS
Cold start 31s / -130dBm
Warm start 22s / -130dBm
Hot Start 3s / -130dBm
BeiDou
Cold start 148s / -130dBm
Warm start 148s / -130dBm
Hot Start 3s / -130dBm
AGNSS Cold start TBD
Sensitivity
GPS
Tracking -160dBm
Acquisition -149dBm
GLONASS
Tracking -160dBm
Acquisition -146dBm
BeiDou
Tracking -160dBm
Acquisition -141dBm
Note:
Please note that GPS current is tested with RF disabled.
4.6 Antenna Design
The L850module provides main and diversity antenna interfaces, and the antenna design requirements
as shown in the following table:
L850 module Main antenna requirements
Frequency range The most proper antenna to adapt the frequencies should be used.
Bandwidth(WCDMA)
WCDMA band 1(2100) : 250 MHz
WCDMA band 2(1900) : 140 MHz
WCDMA band 4(1700) : 445 MHz
WCDMA band 5(850) : 70 MHz
WCDMA band 8(900) : 80 MHz
Bandwidth(LTE) LTE band 1(2100): 250 MHz