LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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3.1 General Description
The KF310 supports UMTS-2100, EGSM-900, DCS-1800, and PCS-1900 based
GSM/GPRS/EDGE/UMTS. All receivers and the UMTS transmitter use the radioOne
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Zero-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.
A generic, high-level functional block diagram of KF310 is shown in [Fig. 3.1]. One antenna collects
base station forward link signals and radiates handset reverse link signals. The antenna connects with
receive and transmit paths through a FEM(Front End Module).
3. TECHNICAL BRIEF
[Fig 3.1] Block diagram of RF part
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QUALCOMM’s branded chipset that implements a Zero-IF radio architecture.
Z3X-BOX.COM
Summary of Contents for KF310
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