Siemens SXG 75 Service Repair Documentation page 14

UMTS TX
5.3.4
The IQ signals from the baseband are directly up-converted to the RF band by a Quadrature
Upconverter and passed to the external filter. The UMTS 1900 TX path is not used in the SXG75.
Blockdiagram RTR6250
WCDMA TX
Circuit diagram (sheet 4)
Technical Documentation
TD_Repair_L3_SXG75_R1.0.pdf
VBATT
Company Confidential
2006©BenQ
Release 1.0
UMTS2100 TX
PA_ON0
(level shifted)
01/2006
Page 14 of 73