User's Manual
Table Of Contents
- Legal Information
- 1 About This Document
- 2 Product Overview
- 3 Interfaces
- 3.1 Definition of PINs
- 3.2 Working Condition
- 3.3 Feature of Interface Power Level
- 3.4 Power Interface
- 3.5 (U)SIM Card Interface
- 3.6 SD Card Interface
- 3.7 USB2.0 Interface
- 3.8 Serial Interface
- 3.9 JTAG (Joint Test Action Group) Interface
- 3.10 Power-on/Power-off & Reset Signal
- 3.11 Interactive Application Interface
- 3.12 LED Indicator Interface
- 4 Electric Feature
- 5 Technical Index of Radio Frequency
- 6 Related Test & Testing Standard
- 7 Design Guide
- 7.1 General Design Rule & Requirement
- 7.2 Power Supply Circuit Design
- 7.3 RF Circuit Design
- 7.4 Suggestions for EMC & ESD Design
- 7.5 Suggestions for PCB Wielding Panel Design
- 7.6 Suggestions for Heat-dissipation Design
- 7.7 Recommended Product Upgrading Plan
- 8 Manufacturing Guide
- 9 FCC Regulations:
Hardware Development Guide of Module Product
42 All Rights reserved, No Spreading abroad without Permission of ZTEWelink
7.3 RF Circuit Design
7.3.1 RF Antenna Circuit Design
There are two interfaces on the RF antenna of ZM5202: main antenna interface,
and GPS antenna. The main antenna supports two access modes of RF signal: by
PDA wielding panel mode and by RF connector mode. The GPS antenna only
supports the access mode of LGA wielding panel. Figure 7-1 is the main antenna
connector interface, and Figure 7-2 Interface of Main Antenna and AGPS Antenna
Welding Pad
Figure 7-3 shows the interface between the antenna and the GPS antenna.
Currently, ZTEWelink adopts the W.FL-R-SMT-1 RF connector testing console from
HRS company, as shown in
Figure 7-1 Main Antenna RF Connector Interface