![background image](http://html.mh-extra.com/html/samsung/sgh-r220/sgh-r220_service-manual_1191004029.webp)
4-4
Block Diagrams
4-2-2 RF Receive Part
F
requency = 947.067 MHz
P
o
w
er = - 50 dBm
1st
Dual
SA
W
Filter
F203
VP40575
U618
IRXP
IRXN
QRXP
QRXN
RXEN1
HD155128TF
U454
8
LNA
LNA
C212, L200
F200
IF SA
W Filter
(225MHz)
Mix
er 2
PGA
I & Q
Demod.
Mix
er 1
Mix
er 1
LC Filter
(45MHz)
1/4
30
47
10
1
7
5
1
3
1
8
7
5
53,54
2,3
49,50
1,2
5,6
40,41
27
S
D
ATA
SCLK
SYNEN1
EGSM :
1150 ~ 1185 MHz
DCS :
1580 ~ 1655 MHz
26
25
24
32,33
44
43
4
3
6
10
10
23
2nd
Dual
SA
W
Filter
F204
RF
Conector
(CN1)
1080 MHz
VCTCXO
(13MHz)
(U100)
PLL1
PLL2
SI4133-XM2
(U478)
RF VCO
IF VCO
2
3
Antenna
S/W
U203
DCS P
ath
EGSM P
ath
- 50dBm
@ 947.067 MHz
- 50dBm
@ 1842.467 MHz
-51dBm
-32dBm
-34dBm
-38dBm
-52dBm
-43dBm
-6dBm
@ 1172 MHz
-9dBm
@ 1617.4 MHz
-5dBm @ 1080 MHz
-25dBm (G)
-29dBm (D)
@ 224.933 MHz
-30dBm (G)
-35dBm (D)
-22dBm (G)
-25dBm (D)
@ 45.067 MHz
-50dBm (G)
-54dBm (D)
@ 67 kHz