6 Antenna Connector

The wireless modem’s antenna connector allows transmission of the radio frequency (RF) signals from the wireless modem to an external customer supplied antenna. The connector is a micro-miniature coaxial MMCX through hole mounted socket.

A number of suitable MMCX type, mating plugs are available from the following manufacturers:

•Amphenol

•Suhner

•IMS Connector Systems

The nominal impedance of the antenna interface is 50 ohms.

Feature

 

GSM850

 

E-GSM900

 

GSM1800

 

GSM1900

 

Frequency range (MHz)

 

824-894

 

880-960 1710-1880

1850-1990

 

 

 

 

 

 

 

 

 

 

 

Maximum power

 

33dBm (2W) 33dBm (2W) 30dBm (1W)

 

30dBm (1W)

 

Antenna Connector impedance

 

 

 

50 ohms

 

 

 

Antenna VSWR

 

 

 

2.5:1 max

 

 

 

To bypass the MMCX connector, a pair of PCB landing pads are available on the underside of the module. You can probe these pads or solder a coaxial cable directly to them. Sony Ericsson; however, cannot

NOTE guarantee absolute performance when connecting to the antenna in this way due to the attenuation such a connection could potentially cause. When connecting in this way, proceed with care.

5.20-4 RF Antenna Pad Dimensions

LZT 123 1834

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