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7 RF Interface
7.1 Operating Band
7.1.1 Antenna Band
Operating
Description
Band
Band 1
IMT 2100MHz
Band 2
PCS 1900MHz
Band 3
DCS 1800MHz
Band 4
AWS 1700MHz
Band 5
CLR 850MHz
Band 7
IMT-E 2600Mhz
Band 8
E-GSM 900MHz
Band 13
US 700MHz blocks C
Band 17
US 700MHz blocks B/C
Band 18
Japan 850MHz
Band 19
Japan Extend 850MHz
Band 20
EUDD 800MHz
7.2 RF PCB Design
7.2.1 Routing Principle
L831-EA module adopts double RF antennas, the MAIN_ANT used for transmitting and receiving, the
DIV_ANT used for receiving. On the one hand, diversity antenna can improve the receiving sensitivity; on
the other hand, it can also improve the download speed. Because the L831-EA module belong to LTE
module, the Antenna need double antennas can meet the performance requirements.
L831-EA Module Hardware User Manual
Mode
LTE FDD/WCDMA
LTE FDD/WCDMA/GSM
LTE FDD/GSM
LTE FDD
LTE FDD/WCDMA/GSM
LTE FDD
LTE FDD/WCDMA/GSM
LTE FDD
LTE FDD
LTE FDD
LTE FDD
LTE FDD
Tx (MHz)
Rx (MHz)
1920 - 1980
2110 - 2170
1850 - 1910
1930 - 1990
1710 - 1785
1805 - 1880
1710 - 1755
2110 - 2155
824 - 849
869 - 894
2500 - 2570
2620 - 2690
880 - 915
925 - 960
777 - 787
746 - 756
704 - 716
734 - 746
815 – 830
860 – 875
830 – 845
875 – 890
832 - 862
791 - 821
Page 41 of 43
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