Technical Brief; General Description - LG -P350 Service Manual

3. TECHNICAL BRIEF

3. TECHNICAL BRIEF

3.1 GENERAL DESCRIPTION

The LG-P350 supports UMTS-900, UMTS-2100, GSM-850, GSM-850, GSM-900, GSM-1800, and GSM-1900
based GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne1Zero-IF architecture
to eliminate intermediate frequencies, directly converting signals between RF and baseband. The quad-band
GSM transmitters use a baseband-to-IF upconversion followed by an offset phase-locked loop that translates
the GMSK-modulated or 8-PSK-modulated signal to RF.
P350 RF Block Diagram
LGE Internal Use Only
[Figure 1-1] Block diagram of RF part
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3. TECHNICAL BRIEF
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RF