PBL 402 15
C16
10nF
C17
33pF
PA - Vcc
C14
2.2nF
C15
8pF
L5 4.7nH
L6 4.7nH
C12 1pF
C13 1pF
Vcc
MS lines 3
GND
+in
+out
-out
Consult PBL40309 for PA
output matching requirements
-in
Gate
RxEN
TxEN ST
CK
44
D
GATE
Can also be a balun type of solution
C10 8pF
C8 1pF
GND
GND
40
GND
L3
5.6nH
48
47
46
45
43
42
41
39
38
37
36
EN
1
RF in to Rx
GND
REF
2
35
34
33
32
Feed from antenna switch.
( 50 ohms )
C9
1pF
L4
8.2nH
VccPLL
3
4
5
L2 5.6nF
C11 8pF
GND
C4 11pF *
MS lines 1
GND
CP
L0
180nH *
6
31
30
PBL402 15
C5 11pF *
LD
7
8
9
in
_
VccCP
NC
C0
+
+
6.8nF
C1
680 pF
IF - SAW filter
29
28
27
26
VccIF
GND
R0
3.9k
_
out
NC
C6 68pF *
MS lines 2
Regulated supply Vcc
10
11
12
L1
140nH *
C2
100nF
VTUNE
VccVCO
C7 68pF *
PA Gate
25
13
14
15
16
17
18
19
20
21
22
23
24
GND
GND
MOD
Vcc
VccFM
DTx
SHold
RSSI
* These components for matching are not needed if Murata filter is used
C3
2nF
C18 22nF
DSL
DRx
Figure 3. DECT application.
EUROPEAN DECT Band 1880 - 1900 MHz
Frequency
TDMA ( time division multiple access )
Frequency and time division.
A-word
CNT_A
Frequency MHz
1881.792
1
2
9
8
1883.520
1885.248
3
4
7
6
5
4
10 channels
1886.976
1888.704
1890.432
1892.160
1893.888
1895.616
1897.344
5
6
Channel spacing
1.728 MHz
3
2
7
8
Base to Mobile
Mobile to Base
9
1
10
Channel 0
0
1
2
3
4
5
6
7
8
9
10
12 13 14 15 16 17 18 19 20 21 22 23
11
each slot contains, a synchronisation field,
control info, data package and error control.
24 time slots
1 slot = 416.67µs
Time
Frame =10 ms
Figure 4. The European DECT band .
2
ERICSSON [ ERICSSON ]
