76
KX-TG7841/KX-TG7842/KX-TG7843/KX-TG7844/KX-TG7845/KX-TG365SK/KX-TG7871/KX-TG7872/KX-TG7873/KX-TG7874/KX-TG7875/KX-TG385SK/KX-TGA680
14.3. Schematic Diagram (Base Unit_RF)
RF_RXn
GND
OJ2
GND
ANT2
OJ6
RF_RXp
GND
ANT1_TP
12
GND
GND
C859
10p
OJ1
GND
OJ5
RF_TXp
ANT1
ANT2_TP
12
OJ4
RF_TXn
ZA1
NC
1
2
6
7
9
11
3
4
5
8
10
12
GND
GND
GND
DA802
1
2
3
+3.0V
OJ3
GND
GND
GND
CL1
ANT1-Short
ANT1-S-GND
ANT2-Short
ANT2-S-GND
C851
10p
C857
10p
C855
10p
C853
10p
GND
OJ8
GND
OJ9
GND
C863 NC
C862 2p
C860 1.8p
C861 1.8p
open-stub
SL
W=2.0mm
L=10.8mm
SL
W=0.2mm
L=20.0mm
W 0.15mm
L 22+/-4mm
1st or 4th layer
TX-balun
SL
W=0.3mm
L=39.0mm
RX-balun
SL
W=0.175mm
L=2.7mm
S=0.125mm
open-stub
SL
W=2.2mm
L=5.0mm
open-stub
SL
W=0.6mm
L=20.0mm
Pre-matching
4layer GND
MSL
W=0.25mm
L=2mm
50 ohm line
total L=4mm
50 ohm line
L=4mm
SL
W=0.3mm
L=6.95mm
open-stub
SL
W=2.9mm
L=2.8mm
MSL
W=0.25mm
L=2mm
LPF
*open-stub
SLx2
W1=0.2mm
L1=3.3mm
W2=0.7mm
L2=5.0mm
*
C=3.6pF
10.5mm2
W 0.15mm
L 22+/-4mm
1st or 4th layer
SL
W=0.3mm
L=6.5mm
MSL
W=0.25mm
L=5mm
MSL
W=0.25mm
L=5mm
RF
NC: No Components
KX-TG7841/7842/7843/7844/7845/365/7871/7872/7873/7874/7875/385
SCHEMATIC DIAGRAM (Base Unit_RF)
RF_Rx
RF_Tx