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KX-TG3721BX/KX-TG3722BX/KX-TGA371BX
14.3. Schematic Diagram (Base Unit_RF)
KX-TG3721/3722 SCHEMATIC DIAGRAM (Base Unit_RF)
NC: No Components
GND
C855
10p
RF_TXp
C822
10p
GND
R806
220
RF_RXn
ANT1
GND
C811
10p
R807
220
TXON
GND
GND
RF_RXp
GND
GND
C809
10p
GND
C856
NC
C858
NC
GND
C854
NC
GND
C850
NC
GND
GND
C825
10p
C857
10p
RF_TXn
+3.0V
GND
GND
C812
10p
GND
GND
GND
ANT_2
GND
GND
ANT1_TP
1 2
1 2
ANT2_TP
C823
NC
GND
GND
TXON
C853
10p
GND
ANT2
C859
10p
ANT_1
*D803
*D804
*D802
*D801
*ZA1
Shield
1 2 3 4 5
6
7
9
11
8
10
12
GND
C826
10p
L806 1.5n
L805 1.5n
C820
4.7p
GND
GND
L807
15n
C851
10p
C805
1.8p
C806
1.8p
C810
0.6p
C813
0.6p
C827
2p
C828
2p
C860 3.3p
C861
2p
L802
4.7n
L803
4.7n
L804
4.7n
W 0.15mm
L 20+/-1mm
3rd layer
W 0.15mm
L 22+/-4mm
1st or 4th layer
W 0.15mm
L 6.0mm
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
W 0.15mm
L 20+/-2mm
3rd layer
Pre-matching
W 0.15mm
L 22+/-4mm
1st or 4th layer
Balun
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
L=17mm
L=17mm
L=13.3mm
GND
from Handset
to Handset