Huawei MG323 ESD Protection for the Antenna Interface, RF Specifications of the Antenna Interface

HUAWEI MG323 GSM M2M Module
Hardware Guide	Antenna Interface

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 4-4shows the ESD protection circuit recommended for the antenna interface.

Figure 4-4ESD protection circuit recommended for the antenna interface

HUAWEI Module (Modem)

RF switch

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 4-2lists the RF specifications of the antenna interface in the MG323 module.

Table 4-2RF specifications of the antenna interface in the MG323 module

Specification				Minimum	Typical	Maximum	Unit
				Value	Value	Value
Uplink frequency range			GSM 850	824		849	MHz
(Mobile station to base transceiver
			E-GSM 900	880		915	MHz
station)
			GSM 1800	1710		1785	MHz
Issue 06 (2013-06-13)		Huawei Proprietary and Confidential					32
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