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Smart LTE Module Series
SC650T Hardware Design
SC650T_Hardware_Design 88 / 131
LTE-FDD B25
1930~1995
1850~1915
MHz
LTE-FDD B26
859~894
814~849
MHz
LTE-FDD B66
2110~2200
1710~1780
MHz
Table 35: SC650T-EM Module Operating Frequencies
3GPP Band
Receive
Transmit
Unit
LTE-FDD B1
2110~2170
1920~1980
MHz
LTE-FDD B3
1805~1880
1710~1785
MHz
LTE-FDD B7
2620~2690
2500~2570
MHz
LTE-FDD B20
791~821
832~862
MHz
LTE-FDD B28
758~803
703~748
MHz
6.1.1.
6.1.1.
6.1.1. Main and Rx-diversity Antenna Interfaces Reference Design
A reference circuit design for main and Rx-diversity antenna interfaces is shown as below. A
π-type
matching circuit should be res
erved for better RF performance, and the π-type matching components
(R1/C1/C2, R2/C3/C4) should be placed as close to the antennas as possible. The capacitors are not
mounted by default and resistors are 0
Ω.
ANT_MAIN
R1 0R
C1
Module
Main
antenna
NM
C2
NM
R2 0R
C3
Diversity
antenna
NM
C4
NM
ANT_DRX