User Guide

Block Diagrams 4-2
4-2 Main RF
IF SAW
Filter
(225MHz)
LC
Filter
(45MHz)
Dual Power AMP Module
SI4133G-XM2
VCTCXO
13MHz
HD155128TF
IF VCO
1080MHz
925~960MHz
Ant. S/W
VC1(GSM)
VC2(DCS)
LPF LPF
Dip.
TX
RX
VC3
DUAL
SAW
filter
1805~1880MHz
Rx
SAW
filter
LNA LNA
PLL1
PLL2
PGA
90°
Shift
÷ 2
90MHz
÷ 6
90°
Shift
÷ 2
DCS : 270MHz
GSM : 540MHz
I&Q
Mod.
GSM : 270MHz
DCS : 135MHz
Phase
Detector
Loop
filter
GSM : 270MHz
DCS : 135MHz
Baseband
Block
890 ~ 915MHz(PGSM)
1710 ~ 1785MHz(DCS)
Tx Dual
VCO
APC
Circuit
Mixer 2
Serial data
interface
45MHz
270MHz
÷ 2
GSM : 1150~1185MHz DCS : 1580~1655MHz
I
-I
Q
-Q
I&Q Demo.
I
-I
Q
-Q
CLK S DATA EN
bias circuit
Mixer 1
RF VCO
÷ 2
Rx
SAW
filter
540MHz
Dual Directional
Coupler
GSM : 1150~1185MHz DCS : 1575~1650MHz
(CH62 : 947.4MHz)
(CH 698 : 1842.4MHz)
(CH 62 : 902.4MHz)
(CH 698 : 1747.2MHz)
CH 62 : 1172.4MHz CH 698 : 1617.4MHz
880 ~ 915MHz(EGSM)