Wifi - Rf Antenna Circuit Diagram - LG BD550 Service Manual

12. WiFi - RF ANTENNA CIRCUIT DIAGRAM

12
11
10
CRITICAL CRITICAL
1.2nH 1.2nH
1 2
9
L14 L14
CRITICAL CRITICAL
L11 L11
NO_LOAD NO_LOAD C58 C58
1.2nH/NI 1.2nH/NI
2pF 2pF
8
ANT0
7
6
5
CRITICAL CRITICAL
1.2nH 1.2nH
1 2
L15 L15
4
CRITICAL CRITICAL
L13 L13
NO_LOAD NO_LOAD 1.2nH/NI 1.2nH/NI
3
ANT1
2
1
A B C D
TP5 TP5
C59 C59
R0 R0
1 2 1 2
0OHM 0OHM
6.8p 6.8p
C72 C72 C73 C73
1.5pF/NI 1.5pF/NI 1.5pF/NI 1.5pF/NI
TP6 TP6
C15 C15
R1 R1
1 2 1 2
0OHM 0OHM
6.8p 6.8p
C70 C70 C71 C71
C61 C61
1.5pF/NI 1.5pF/NI 1.5pF/NI 1.5pF/NI
2pF 2pF
E F G H
R11 100 R11 100
VRXA0_0
1 2
C25 C25
6.8p 6.8p
C26 C26
U4 U4
4 1 1
VC1 RF1
A0_ANT0
5 2
RFC GND
6 3 1
VC2 RF2
C28 C28
AS179-92LF AS179-92LF
R6 100 R6 100
VTXA0_0
1 2
C23 C23
6.8p 6.8p
R29 100 R29 100
VRXA1_1
1 2
C34 C34
6.8p 6.8p
C35 C35
U9 U9
4 1 1
VC1 RF1
A0_ANT1
5 2
RFC GND
6 3 1
VC2 RF2
C37 C37
AS179-92LF AS179-92LF
R20 100 R20 100
VTXA1_1
1 2
C31 C31
6.8p 6.8p
I J K L
3-117 3-118
4
VRXA0_0
6.2pF 6.2pF
2.4GHZ 2.4GHZ
RXG_0 4
2
RXG_0
U3 U3
R3 2.2nH R3 2.2nH
TX_2G_PA_0
2 5 2 1
OUT IN
6.2pF 6.2pF
C22 C22
1.5pF/NI 1.5pF/NI
4
VTXA0_0
4
VRXA1_1
6.2pF 6.2pF
2.4GHZ 2.4GHZ
RXG_1 4
2
RXG_1
U8 U8
R18 2.2nH R18 2.2nH
TX_2G_PA1
2 5 2 1
OUT IN
6.2pF 6.2pF
C30 C30
1.5pF/NI 1.5pF/NI
4
VTXA1_1
M N O P Q
TXG_0
2 4
TXG_0
TXG_1 4
2
TXG_1
RF antenna RF antenna RF antenna
WN7522C-1-LF-19
R S T