Contents
1 Introduction ........................................................................................................................... 6
2 Precautions ............................................................................................................................. 7
3 MS2131 Overall Description ................................................................................................ 8
3.1 About This Chapter ............................................................................................................................................................... 8
3.2 Product Information .............................................................................................................................................................. 8
3.3 Function Overview ............................................................................................................................................................... 9
3.4 Circuit Diagram .................................................................................................................................................................. 10
3.5 Port Application Diagram................................................................................................................................................... 11
4 MS2131 Interface Features and Design Requirements .................................................... 12
4.1 About This Chapter ............................................................................................................................................................. 12
4.2 MS2131 Interface Introduction .......................................................................................................................................... 12
4.2.1 USB Port and Reference Circuits ................................................................................................................................... 12
4.2.2 Power Port Introduction .................................................................................................................................................. 13
4.3 SIM Card Port Introduction ............................................................................................................................................... 14
5 MS2131 RF Features and Design Requirements ............................................................... 15
5.1 About This Chapter ............................................................................................................................................................. 15
5.2 Working Bands .................................................................................................................................................................... 15
5.3 Wireless Performance Specifications ................................................................................................................................ 16
5.3.1 TIS .................................................................................................................................................................................... 16
5.3.2 TRP ................................................................................................................................................................................... 16
5.4 Antenna Design Requirements ........................................................................................................................................... 16
5.5 Antenna Test Environment ................................................................................................................................................. 19
6 MS2131 Structure Features and Design Requirements .................................................... 21
6.1 About This Chapter ............................................................................................................................................................. 21
6.2 Dimensions and Weight ...................................................................................................................................................... 21
6.3 MS2131 Design Requirements Addressing the Host Structure ....................................................................................... 22
6.3.1 USB Connector Outline Dimensions.............................................................................................................................. 22
6.3.2 MS2131 Peripheral Staking Requirements .................................................................................................................... 24
7 MS2131 Power Design Guide ............................................................................................. 26
7.1 About This Chapter ............................................................................................................................................................. 26
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