Schematic Diagram (Base Unit_Rf) - Panasonic KX-TG7841S Service Manual

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)

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