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2.
$QWHQQDB6SHF
2.
Frequency Band
Service
Band
Tx ( MH z)
Rx ( MHz )
2.2
Impedance
2.2.1
Normal Value
50Ÿ ± Normal
2.2.1
Measuring Method
The impedance over the frequency bands shall be as close as possible to
50Ÿ after matching. Both free space and talk position are considered.
2.
VSWR
The impedance matching should be optimized in the more critical talk
position.
2.3.1
Maximum values in free space
SERVICE
VSWR
2.3.2
Measuring Method
A 50 coaxial cable is connected(soldered) to the 50 point, at the duplex-
filter on the main PCB. The connection of the coaxial cable shall be done to
introduce a minimum of mismatch. As much as possible the coaxial cable
arrangement shall prevent influences from induced currents on the cable.
In the other end, the coaxial cable is connected to a network analyzer.
The measurement is performed at room temperature. The handset,
including the PCB, must not in any significant way differ from the mass
production, i.e. the antenna feeding network has to be equivalent to the
feeding network in mass production. The specification shall be met in the
entire frequency band.
*60 80
824 ~ 849
869 ~ 894
*60 80
TX
Rx
2.7
2.0
Confidential Proprietary
*60 1900
WCDMA 2.1G
1850 ~ 1910
1920 ~ 1980
1930 ~ 1990
2110 ~ 2170
*60 1900
TX
RX
2.9
3.4
WCDMA 2.1G
Tx
Rx
2.7
1.9
4/16
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