Esd Protection For The Antenna Interface; Rf Specifications Of The Antenna Interface - Huawei MG323 Hardware Manual

Gsm m2m module
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HUAWEI MG323 GSM M2M Module
Hardware Guide

4.4 ESD Protection for the Antenna Interface

In practical application, pay attention to the ESD protection for the antenna interface
of the MG323 module. Incorrect operation may result in permanent damage to the RF
components.
Figure 4-4 shows the ESD protection circuit recommended for the antenna interface.
Figure 4-4 ESD protection circuit recommended for the antenna interface
It is recommended that you pay attention to the junction capacitance of the TVS
diode when you choose the model of the TVS diode. Ensure that the junction
capacitance of the TVS diode is lower than 1 pF.

4.5 RF Specifications of the Antenna Interface

Table 4-2 lists the RF specifications of the antenna interface in the MG323 module.
Table 4-2 RF specifications of the antenna interface in the MG323 module
Specification
Uplink frequency range
Issue 04 (2011-08-22)
GSM-850
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Minimum
Typical
Value
Value
824
Antenna Interface
Maximum
Unit
Value
849
MHz
30

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