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4.3 Antenna switch (
Internal > Receiver/Transmitter <> GSM900/1800
The Axx mobile has in opposite to P35 only one antenna switch (electrical).
The electrical antenna switch
between the receiving and transmitting signals, just like the differentiation
between GSM900 and GSM1800.
To do so the transistors
diplexer signals
from PA
Please note, that Axx mobiles have no external antenna connector.
The matrix below shows the different conditions at the diplexer and the
accompanying signals.
V1.0
A35-A36-A40
)
electrical
(Diplexer
V506,V507,V509
VC1–VC4
as required.
to GSM receiver
Page 11 of 38
Company Confidential
Z503) is used for the differentiation
and
V510
are used to switch the
to PCN receiver
Notes
ICM MP CC ST
09/01
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