LG U8138 Service Manual page 87

3. TECHNICAL BRIEF
F. Power Amplifier
The N1630(RF9266) is a high-power, high-efficiency linear amplifier module targeting W-CDMA
transmitter ASIC. The module is fully matched to 50( for easy system integration and utilizes advanced
GaAs HBT process technology. The PA features an integrated RF power output detection network and
is compatible with DC-DC converter operation in DC power management applications. Additionally, a
variable bias-current allows the idle current to be adjusted for optimum performance at a given RF
output power.
Figure 3-14. Block Diagram of W-CDMA power amplifier.
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