1
4 and figure 5, then arrival the diplexer.
When the BC1 and BC8’s rx signal arrival their diplexer respectively, BC1’s signal
comes out from U1210’s PIN1, then enter in U1101 after through C1252. BC8’s signal
comes out from U1201’s PIN1and PIN8 which is a differential signal. Then it enter in
U1101 after through a match network and C1201 and C1209.The path was described in
figure 10 as below.
Figure 10 WCDMA‘s rx signal path from diplexer to U1101
After BC1’s signal entered in U1101, in order to improve the SN parameter, The
transceiver amplified the signal first in its internal LNA, and then puts out the BC1‘s
signal. The signal was filtered through U1102, and last they enter the U1101 again. The
path described above can refer to the figure 11.
11. WCDMA’s high band rx signal from U1101 to U1102 to U1101
