User Guide

4-4 Block Diagrams
4-2-2 RF Receive Part
Frequency = 947.067 MHz Power = - 50 dBm
1st
Dual
SAW
Filter
F203
VP40575
U618
IRXP
IRXN
QRXP
QRXN
RXEN1
HD155128TF
U454
8
LNA LNA
C212, L200
F200
IF SAW Filter
(225MHz)
Mixer 2
PGA
I & Q
Demod.
Mixer 1
Mixer 1
LC Filter
(45MHz)
1/4
3047
10 1
7
5
1 3
1
8
7
5
53,54
2,3
49,50
1,2
5,6
40,41
27
S DATA SCLK
SYNEN1
EGSM : 1150 ~ 1185 MHz DCS : 1580 ~ 1655 MHz
26 25 24
32,33
4443
4
3
6
10
10
23
2nd
Dual
SAW
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 Path
EGSM Path
- 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