The main antenna consists of an antenna flex attached to an antenna carrier with an adhesive. This is called
Cellular Antenna Module. The Cellular Antenna Module also acts as top of an IHF chamber, which is built
together with the D-Cover. For acoustical sealing of the IHF chamber a sealing is glued on the bottom side
of the Cellular Antenna Module. The Cellular Antenna Module is snapped in the D-Cover and the IHF speaker
is in between the Cellular Antenna Module and the D-Cover.
The Bluetooth antenna also consists of an antenna flex attached to an antenna carrier with an adhesive. It
is put in the D-Cover at the side of the phone opposite to the volume key. In the fully assembled phone it is
hidden by the D-Cover Trim.
Main antenna functionality
The main antenna consists of two radiators which cover different frequency ranges. One radiator covers the
range 824 MHz to 960 MHz, the low band, and the other radiator the ranges 1710 MHz to 1990 MHz as well
as 2110 MHz to 2170 MHz, the high bands.
Both radiators are matched monopoles, the matching network consists of components, which are soldered
on the antenna flex and are located on the bottom side of the assembled antenna module.
There are three pads close to the matching network. They act as contact areas for the C-Clips on the PWB.
The outer ones are ground, and the middle area is the antenna feed, as shown in the following figure.
RM-598; RM-604
RF Troubleshooting
Page 4 –30
COMPANY CONFIDENTIAL
Issue 1
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