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6. BLOCK DIAGRAM
6. BLOCK DIAGRAM
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
6.1 GSM & UMTS RF Block
Qu
a
d
ra
tu
re
Up
co
n
v
e
rte
r
Qu
a
d
ra
tu
re
Do
wn
c
onv
ert
e
r
Qu
adrat
u
re
Do
wn
co
n
v
e
rte
r
Quad
rat
u
re
Do
wn
co
n
v
e
rte
r
LP
F
&
D
C
Co
rre
c
tio
n
LO
ge
nerat
ion
& D
is
tr
ib
u
tio
n
LP
F
&
D
C
Co
rre
c
tio
n
LP
F
&
D
C
Co
rre
c
tio
n
Dugital IO s
& controls
LP
F
Qua
d
rat
u
re
Up
co
n
v
e
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
U2
100
Rx B
P
F
Ct
ls
Pow
e
r
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
9
0
0
Rx
B
P
F
SW
H-
B
P
F
L-
B
P
F
Co
u
p
le
r
U2
1
0
0
Tx
B
P
F
G9
0
0
Tx
B
P
F
pad
pad
GS
M
/E
D
GE
P
A
U2
1
0
0
PM
6650
Input
P
o
w
e
r
Ma
n
a
g
e
m
e
n
t
Vo
ltag
e
Re
g
u
la
to
rs
Ge
n
e
ra
l
Ho
u
s
e
k
eepin
g
Use
r
In
te
rf
a
c
e
s
IC
In
te
rf
a
c
e
s
Ph
o
n
e
VC
T
C
X
O
RT
R6
2
7
5
_
T
C
X
O
MS
M_
T
C
X
O
MSM6280
DA
C
_R
E
F
[Fig. 6.1] UMTS-2100 + EGSM-900/DCS-1800/PCS-1900 RF Functional Block Diagram
Summary of Contents for KF700
Page 1: ...Service Manual Model KF700 Service Manual KF700 Date May 2008 Issue 1 1 Internal Use Only ...
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