3. TECHNICAL BRIEF
- 4 -
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
3.1 GENERAL DESCRIPTION
The LG-E730 supports UMTS-2100, UMTS-900, 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.
G G
G
G G
[Figure 3.1] Block diagram of RF part
G G
3. TECHNICAL BRIEF