LG 501C Service Manual page 36

LG501C
1.3.1.2 PCS CDMA transmit signal path performance specifications
1.3.2 Dual Power Amplifier(U1106 , Cellular/PCS) / AWS Power Amplifier (U1105)
The power amplifier that can be used in the PCS, Cellular and AWS mode has linear amplification capability and
high efficiency. For higher efficiency, it is made up of one MMIC (Monolithic Microwave Integrated Circuit) for
which RF input terminal and internal interface circuit are integrated onto one IC after going through the
AlGaAs/GaAs HBT (heterojunction bipolar transistor) process. The module of power amplifier is made up of an
output end interface circuit including this MMIC. The maximum power that can be inputted through the input
terminal is +10dBm and conversion gain is about 28dB. RF transmit signals that have been amplified through the
power amplifier are sent to the quadplexer.
LG Electronics Inc.
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