Product Info
Table Of Contents
- About the Document
- Contents
- Table Index
- Figure Index
- 1Introduction
- 2Product Concept
- 3Application Interfaces
- 3.1.General Description
- 3.2.Pin Assignment
- 3.3.Pin Description
- 3.4.Power Supply
- 3.5.Turn on and off Scenarios
- 3.6.VRTC Interface
- 3.7.Power Output
- 3.8.Battery Charge and Management
- 3.9.USB Interface
- 3.10.UART Interfaces
- 3.11.(U)SIM Interfaces
- 3.12.SD Card Interface
- 3.13.GPIO Interfaces
- 3.14.I2C Interfaces
- 3.15.ADC Interfaces
- 3.16.Motor Drive Interface
- 3.17.LCM Interface
- 3.18.Touch Panel Interface
- 3.19.Camera Interfaces
- 3.20.Sensor Interfaces
- 3.21.Audio Interfaces
- 3.22.Emergency Download Interface
- 4Wi-Fi and BT
- 5GNSS
- 6Antenna Interface
- 7Electrical, Reliability and Radio Characteristics
- 8Mechanical Dimensions
- 9Storage, Manufacturing and Packaging
- 10Appendix A References
- 11Appendix B GPRS Coding Schemes
- 12Appendix C GPRS Multi-slot Classes
- 13Appendix D EDGE Modulation and Coding Schemes
Smart LTE Module Series
SC20 Hardware Design
SC20_Hardware_Design Confidential / Released
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6 Antenna Interface
SC20 antenna interface includes a main antenna, an Rx-diversity/MIMO antenna, a GNSS antenna and a
Wi-Fi/BT antenna. The antenna interface has an impedance of 50Ω.
6.1. Main/Rx-diversity Antenna Interfaces
The pin definition of main/Rx-diversity antenna interfaces is shown below.
Table 32: Pin Definition of Main/Rx-diversity Antenna Interfaces
Pin Name
Pin No.
I/O
Description
Comment
ANT_MAIN
87
IO
Main antenna
50Ω impedance
ANT_DRX
131
AI
Diversity antenna
50Ω impedance
6.1.1. Operating Frequency
Table 33: SC20 Module Operating Frequencies
3GPP Band
Receive
Transmit
Unit
GSM850
869~894
824~849
MHz
EGSM900
925~960
880~915
MHz
DCS1800
1805~1880
1710~1785
MHz
PCS1900
1930~1990
1850~1910
MHz
WCDMA Band1
2110~2170
1920~1980
MHz
WCDMA Band2
1930~1990
1850~1910
MHz
WCDMA Band4
2110~2155
1710~1755
MHz