Product Info

Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design 74 / 130
6 Antenna Interfaces
SC20 provides four antenna interfaces for main antenna, Rx-diversity/MIMO antenna, GNSS antenna
and Wi-Fi/BT antenna, respectively. The antenna ports have an impedance of 50Ω.
6.1. Main/Rx-diversity Antenna Interfaces
The pin definition of main/Rx-diversity antenna interfaces is shown below.
Table 30: Pin Definition of Main/Rx-diversity Antenna Interfaces
6.1.1. Operating Frequency
Table 31: SC20-CE R1.1 Module Operating Frequencies
Pin Name
Pin No.
I/O
Description
Comment
ANT_MAIN
87
IO
Main antenna
50Ω impedance
ANT_DRX
131
AI
Diversity antenna
3GPP Band
Receive
Transmit
Unit
EGSM900
925~960
880~915
MHz
DCS1800
1805~1880
1710~1785
MHz
WCDMA B1
2110~2170
1920~1980
MHz
WCDMA B8
925~960
880~915
MHz
EVDO/CDMA BC0
869~894
824~849
MHz
TD-SCDMA B34
2010~2025
2010~2025
MHz
TD-SCDMA B39
1880~1920
1880~1920
MHz