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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. TECHNICAL BRIEF
- 17 -
3.1 General Description
The KU380 supports UMTS-2100, GSM-900, DCS-1800, and PCS-1900 based GSM/GPRS/UMTS.
All receivers and the UMTS transmitter use the radioOne
1
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 signal to RF.
1
QUALCOMM’s branded chipset that implements a Zero-IF radio architecture.
3. TECHNICAL BRIEF
Front
End
Module
Duplexer
RTR6275
WCDMA
PAM
MSM6245
WCDMA
TX SAW
WCDMA
RX SAW
PM6650
-2M
GSM
PAM
GSM
TX SAW
COUPLER
VCTCXO
Bluetooth
RF Module
U-SIM
1.3M CAM
USB
MIC
SPK/RCV
KEYPAD
NAND, SDRAM
FLASH
MAIN LCD
VGA CAM
GSM900 Rx
GSM1800 Rx
GSM1900 Rx
GSM900 Tx
GSM1800/1900 Tx
AntSW Logic
WCDMA2100 Tx
WCDMA2100 Rx
GSM
VCO
WCDMA
VCO
HDET
GSM Block
WCDMA Block
[Fig 1.1] Block diagram of RF part
Содержание Vodafone KU380
Страница 1: ...Date December 2007 Issue 1 0 Service Manual KU380 Service Manual Model KU380 Internal Use Only ...
Страница 151: ... 152 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 157: ... 158 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...
Страница 188: ...Note ...
Страница 189: ...Note ...