Telit Wireless Solutions LN920, Hw Design Manual

Page: 5 / 81

LN920 HW Design Guide
1VV0301730 Rev. 1
Page 5 of 81 2021-08-11
Not Subject to NDA
7. RF SECTION 49
Bands Variants 49
TX Output Power 49
RX Sensitivity 49
Antenna Requirements 50
7.4.1. Antenna Configration 51
7.4.2. Antenna Connector 53
7.4.2.1. Antenna Cable 54
7.4.2.2. Antenna Installation Guidelines 54
8. GNSS SECTION 56
GNSS Signals Pin-out 56
RF Front End Design 56
8.2.1. Guidelines of PCB Line for GNSS Antenna 56
8.2.2. Hardware-Based Solution for GNSS and LTE Coexistence 57
GNSS Antenna Requirements 58
8.3.1. GNSS Antenna Specifications 58
8.3.2. GNSS Antenna – Installation Guidelines 58
GNSS Characteristics 58
9. MECHANICAL DESIGN 60
General 60
Drawing 60
10. APPLICATION GUIDE 61
Debug of the LN920 Module in Production 61
Bypass Capacitor on Power Supplies 61
EMC Recommendations 62
11. PACKAGING 63
Tray 63
12. CONFORMITY ASSESTMENT 65
Approvals Summary 65
RED Approval 65
12.2.1. RED Declaration of Conformity 65