Samsung SGH-E330 Service Manual page 17

5 . S G H - E3 3 0 B l o c k D i a g r a m s
1. RF So lut ion Bloc k Diagram
HITACHI METAL ANT SWITCH
SHS-C090T (SIZE)
Imax = 10 mA
Freq (MHz) Loss
880 - 915 1.2 dB
925 - 960 0.9 dB
1710 -1785 1.2 dB
1805 -1880 1.2 dB
Atten 2xfo : 40dB,27dB(GSM,DCS)
3xfo : 35dB,21dB(GSM,DCS)
Vc_EGSM Vc_DCS
FE_SW1
FE_SW2
RFMD PAM
RF5146
GSM: Pout = 35.0 dBm E
DCS: Pout = 33.0 dBm E
SGH-E330 RF Block Diagram
FUJITSU EGSM RX SAW Filter
FAR F5EB-942M50-B28CH
IL=3.2dB max
Ripple=2.2 dB max
FUJITSU DCS RX SAW Filter
FAR-F6EB-1G9600B2BW
IL= 3.0dB max
Ripple= 2.0dB max
Discrete
3 rd Order
Loop Filter
OFFSET Mixer input power
-16dBm max, -22dBm min
pi -PAD
Vcc_Tx_BURST
3 rd Order
VBAT
GSM IN
~
pi -PAD
VRAMP
~
TX ENABLE
BAND SELECT
MURATA TX VCO
DCS IN
MQW510C869M
pi -PAD
GSM = 824 ~ 915 MHz (5.0
(Vt=0.5V ~ 3.0 V )
DCS = 1710 ~ 1910 MHz
ff = 58%
(Vt=0.5V ~ 3.0 V )
ff = 52%
Harmonics <= -10dBc Pout= 6.5 3dBm typ.,Ic <= 30mA
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QUAD
Vcc_RF_LO
VREG DIV
Vcc_RF_VCO
~
GSM/DCS/PCS
CP
FE_SW1
FE_SW2
Discrete
Loop Filter
CP
PFD
Philips Transceiver
GSM S/W
UAA3536
DCS S/W
X 3.9 X 1.6 mm)
5- 1
VREG
FracN
DIV
f compRF = 26MHz
PFD
I+
DIV
1:1/2
QUAD
fmod
I-
3W
f TXIF
BUS
60/114MHz
Q+ CTL
REG
Q-
PWR
EN
Pins IA,IB,QA and QB
V IQ : 1.25V typ. , 1.15V min, 1.35V max
V mod : 0.5V pp
+ I OUT
- I OUT
100 kHz+fmod
+ Q OUT
- Q OUT
Vcc_SYN
Vcc_REF(2.4V typ.)
REFIN
VTCXO
26MHz
REF_13M
DATA
CLK
EN
RXON
TXON
SYNON
FESWON