LG lg-d821 - Page 210

5. BLOCK DIAGRAM
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[D821] RF CDMA/Global/LTE
• GSM 1800/1900
• UMTS B1/2/4
• LTE B1/3/7
Ant. 2
TRX_B2
TRX_B3
TRX_B4
TRX_B1
TX_HB
GSM850 / GSM900
TRX_B5
TRX_B8
TX_LB
TRX_B20
GSM_LB
B8
MMPA
B20
B8
B20
B8 / GSM900
B5/B6 / GSM850
QFE1100
• GSM 850/900
• UMTS B5/6/8
• LTE B5/8/20
Ant. 1
MMPA
GSM_HB
B2
B3
B4
B1
TRX_B7
GSM1800 / GSM1900
B1, B2
B3/B4
B7
B7
B1/B4
B3/GSM1800
B2GSM1900
WTR_PDET_IN
-3dB
-9dB
2. D821(SKU2)_RF CDMA/Global/LTE
B41 Balun
LPF
LPF
APT
B5
B2
GSM_HB
B3
B4
B1
GSM_LB
B8
WTR1605L-1
( HIGH Band )
WTR1650L-1
(Low Band )
PDET_IN
T
X_MB2
P
RX_HB
T
X_MB4
T
X_MB3
T
X_LB2
T
X_LB1
T
X_LB4
T
X_LB3
P
RX_LB1
P
RX_LB2
P
RX_LB3
T
X_HB
P
RX_MB3
P
RX_MB1
P
RX_MB2
SPDT
SPDT
SPDT
Saw or DPD Filter
SP3T
SPDT