1
band 1 ‘s tx saw filter U1205, it arrives band1’s PA ,then enter in diplexerU1210, then
enter the switchU1207。The path described above as below:
Figure 8 WCDMA band 1’s tx signal from U1101 to U1207
Band1’s signal comes out from U1207’PIN20.The signal ‘s path after U1207 is same as
gsm signal path .The detail can refer to figure 4 and figure 5 .
Note：In Figure 8, there is a power detector circuit shared by wcdma’s band1 and band8
which is used to detect the tx power by U1101.
2.
wcdma band 8 tx signal’s path
Band 8‘s tx path is same as band 1. The tx signal comes from U1101 ,and then through
saw filter U1202, PA U1209, diplexer U1201,and then enter the U1207.The details was
described as below Figure 9.
Figure 9 WCDMA band 8’s tx signal from U1101 to U1207
The signal ‘s path after U1207 is same as gsm signal path .The detail can get from
figure 4 and figure 5 .
3.
Band1 and band 8 rx path
WCDMA’s rx signal was received by antenna, then through the path described in figure
