User Guide

4-3 Block Diagrams
4-2-1 RF Transmit Part
VCTCXO
(U502)
EGSM TX
880 ~ 915 MHz
(CH62 : 902.4 MHz)
DCS TX
1710 ~ 1785 MHz
(CH698 : 1747.4 MHz)
Anten na
S/W
(U704)
RF
Conecto r
(CON700)
VP40578
(U400)
Bryce Park
SDATA SCLK
SENB
PDNB
PD
LPF
Si4200
(U600)
I Q
Dual P A M
(U701 )
RF
PL L
Si4133-T
(U503)
AFC
VAPC FROM
U702
+VBATT
8
3VTX
TXEN2
from U400
VC1 VC2
Ant. S/W
Control
Circuit
VC2
BAND Selectio n - GSM : Low - DCS : High
<EGSM> 1279 ~ 1314 MHz <DCS> 1327 ~ 1402 MHz
- 6dBm @ 1301.4 MH z (G) - 9dBm @ 1364.4 MHz (D)
211
53
9
11
7 1
24 25
5 6 7 8
31
4
2
7
26,27
23,24 12,13
9,10
IF
PL L
9
/2
<EGSM> 880~895 MHz : 798 MHz 895~900 MHz : 790 MHz 900~915 MHz : 798 MHz <DCS> 766 MHz
- 6dBm @ 798 MHz - 9dBm @ 766 MHz
1
2
3
VC2VC1
Tx(GSM)
Tx(DCS)
Rx
L
L
H
H
LL
TXEN2
Txpower
2
1