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.

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

Minimum

Typical

Value

824

Antenna Interface

Maximum

Unit

Value

849

MHz

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