User's Manual
Table Of Contents
- Contents
- Table Index
- Revision History
- 1 Introduction
- 2 Package Information
- 3 Interface Application
- 4 RF Specifications
- 5 Electrical Specifications
- 6 SMT Production Guide
- 7 Packaging
- 空白页面
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SIM7600E-H_User Manual_V1.00 2017-10-11
4.2 LTE Antenna Design Guide
Users should connect antennas to SIM7600E-H’s antenna pads through micro-strip line or other
types of RF trace and the trace impedance must be controlled in 50Ω. SIMCom recommends that
the total insertion loss between the antenna pads and antennas should meet the following
requirements:
Table 26: Trace loss
Frequency Loss
2500~2570MHz <1.2dB
2620~2690MHz <1.2dB
To facilitate the antenna tuning and certification test, a RF connector and an antenna
matching circuit should be added.
In
above figure, the components R1,
C1, C2 and R2 are used for antenna matching, the values of
components can only be achieved after the antenna tuning and usually provided by antenna vendor.
By default, the R1, R2 are 0Ω resistors, and the C1, C2 are reserved for tuning. The component
D1 is a TVS for ESD protection, and it is optional for users according to application environment.
The RF test connector is used for the conducted RF performance test, and should be placed as
close as to the module’s MAIN_ANT pin. The traces impedance between SIM7600E-H and
antenna must be controlled in 50Ω.
Ta
ble 27: Recommended TVS
Package Part Number Vender
0201 LXES03AAA1-154 Murata
0402 LXES15AAA1-153
Murata