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6. BLOCK DIAGRAM
6.1 GSM RF Block
6. BLOCK DIAGRAM
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Qu
a
d
ra
tu
re
Up
c
onv
ert
er
Qu
a
d
ra
ture
Do
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ve
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r
Quad
rat
ure
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co
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e
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r
LP
F
&
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C
Co
rre
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ge
nerat
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& D
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ib
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tio
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LP
F
&
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C
Co
rre
c
tio
n
LP
F
&
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C
Co
rre
c
tio
n
Dugital IO s
& controls
LP
F
Qua
drat
u
re
Up
co
n
ve
rte
r
LP
F
BPF
BPF
BPF
BP
F
PL
L #
1
VC
O
LPF
F r
e
f
F r
e
f
RT
R6
2
75
_
T
C
X
O
VD
D
M
PL
L
#
2
VC
O
F r
e
f
LPF
Ct
ls
Pow
er
De
te
c
to
r
GS
M
1
9
0
0
Rx
B
P
F
GS
M
1
8
0
0
Rx
B
P
F
GS
M
8
5
0
Rx
B
P
F
SW
H-
BPF
L-
B
P
F
G9
0
0
Tx
B
P
F
pad
pad
GS
M
/E
D
GE
P
A
P
M
66
5
0
In
p
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t P
o
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Re
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Ge
n
e
ra
l
Ho
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s
ek
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Use
r
In
te
rf
ac
es
IC
In
terf
ac
es
Ph
o
n
e
VC
T
C
X
O
RT
R6
2
7
5
_
T
C
X
O
MS
M_
T
C
X
O
ESM6270
DA
C
_R
E
F
[Figure 2.1] EGSM-900/DCS-1800/PCS-1900 RF Functional Block Diagram
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