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5. Block Diagrams
5-1
5-1. RF Solution Block Diagram
100 kHz+fmod
REFIN
VC-TCXO
GSM
DCS/PCS
I+
fmod
I-
Q+
Q-
~
~
VAPC
Vcc_RF_VCO
Discrete
3
rd
Order
Loop Filter
fc = ? kHz
MURATE TX VCO
MQW510C869M
(5.5*4.8*1.5mm)
GSM = 880 ~ 915MHz
(Vt=0.5V ~ 3.0V )
kV = 55+-11 MHz/V Typ
DCS = 1710 ~ 1785MHz
(Vt=0.5V ~ 3.0V )
kV = 115+-23 MHz/V Typ
Pout= 6.5+-3 dBm typ.,Ic <= 30mA
Harmonics <= -10dBc
SKYWORKS PAM
SKY77328-13
(6*6*1.2mm)
GSM: Pout = 35.0 dBm Eff=60%
DCS: Pout= 33.0 dBm Eff = 55%
RXON
Vcc_Tx_BURST
VBAT
EN
CLK
DATA
DCS S/W
OFFSET Mixer input power
-16dBm max, -22dBm min
f
compRF
=26MHz
Philips Transceiver
UAA3536
Pins IA,IB,QA and QB
V
I
Q
: 1.25V
ty
p
. , 1.15V
mi
n
, 1.35V
max
V
mod
: 0.5V
p
p
QUAD
DIV
PFD
CP
VREG
~
Vcc_RF_LO
FracN
DIV
1:1/
2
VREG
26MHz
Vcc_REF(2.4V typ.)
Vcc_SYN
FESW1
FESW2
3W
BUS
CTL
REG
PWR
EN
GSM/DCS/PCS
DIV
QUAD
PFD
CP
f
TXIF
60/114MHz
+ I OUT
-
-
+
FESWON(N,A)
SYNON
TXON
GSM S/W
PMU
PCF50601
HVS
VDD1 (1.35V min 2.95V max , 150mA )
VBat (3.6V typ 3.0V min)
V_MODE
RF1_VDD
RF2_VDD
RF1_VDDS
RF2_VDDS
VDD2 (1.35V min 3.45V max , 150mA )
VDD3 (1.35V min 3.45V max , 100mA )
AVDD(1.35V min 2.65V max , 100mA )
VCC_RX_TX (2.7V ,100mA )
VCC_SYN (2.7V , 100mA )
VCC_RF_VCO (2.7V , 100mA )
VCC_CP (4.0V , 25mA )
VCC_TX_BURST (2.7V , 100mA )
PON_SYNT
PON_TX
EGSM_TX_MODE_SW
VCC_RX_TX
Vc_EGSM
DCS/PCS_TX_MODE_SW
Vc_DCS
Inverter
circuits
I OUT
Q OUT
Q OUT
Vc_PCS
PCS_TX_MODE_SW
Vc_PCS
Vc_PCS
Vc_PCS
(2.5~3.0V)
VDD4 (1.35V min 3.45V max , 150mA )
Ripple in passband = 2.0dB max
SAMSUNG FEM
FEM4532TBC
(4.5*3.2*1.8mm)
Imax = 10 mA
Freq (MHz)
Insertion Loss
EGSM_TX(880 ? 915) 1.28 dB
EGSM_RX(925 ? 960) 4.0 dB
DCS/PCS_TX(1710 - 1910) 1.5 dB
Atten 2xfo : 30dB,25dB(GSM,DCS/PCS)
3xfo : 25dB,25dB(GSM,DCS/PCS)
DCS_RX(1805 -1880) 4.1 dB
PCS_RX(1930 -1990) 4.1 dB