Antenna Interface; About This Chapter; Antenna Installation - Huawei MG323 Hardware Manual

Gsm m2m module

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HUAWEI MG323 GSM M2M Module

Hardware Guide

An RF connector or an antenna pad can be used as the connection method of an

antenna interface. When the MG323 module works properly, only one of the

preceding connection methods is used. In addition, the antenna interface must be

used with coaxial cables with 50 ohm characteristic impedance.

The MG323 module supports the following two antenna connection methods: buckled

RF connector U.FL-R-SMT-1(80) manufactured by Hirose, and antenna pad. It is

recommended that you use the buckled RF connector.

When the MG323 module works properly, only one antenna connection method can

be used; otherwise, the RF performance may deteriorate.

If a buckled RF connector is used, it is recommended that you use a 50-ohm coaxial

cable in the U.FL series. The height of the connector increases by 0.8 mm when this

cable is used.

If an antenna pad is used, you need to connect the coaxial cable core to the pad. In

addition, you need to connect the shield ground of the coaxial cable to the reference

ground near the pad. You can choose a suitable direction to weld the RF cable to

meet the installation requirements according to the actual application.

When trying to shorten the opening between the coaxial cable core and the shield

ground, you also need to prevent a short circuit.

Issue 04 (2011-08-22)

Huawei Proprietary and Confidential

Antenna Interface

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