Sharp GX30 Service Manual page 87

Tx VCO
GSM850
LOOP
GSM900
FILTER
DCS1800 1710.2 to 1784.8 MHz
PCS1900 1850.2 to 1909.8 MHz
12
PD
RF Synthesizer
0deg
LNA
ft(1/2)
LNA
0deg
ft(1/2)
LNA
CONFIDENTIAL
BS2
BS3
824.2 to 848.8 MHz
VBAT
880.2 to 914.8 MHz
3,6,13
18
19
17 1
4,5,8,9,10,11,14,
15,19,20,21,22,23
RFVCO
Tx GSM850 3616.8 to 3715.2 MHz
GSM900 3848.8 to 3979.2 MHz
DCS1800 3580.4 to 3729.6 MHz
PCS1900 3860.4 to 3979.6 MHz
Rx GSM850 3476.8 to 3575.2 MHz
GSM900 3700.8 to 3839.2 MHz
DCS1800 3610.4 to 3759.6 MHz
PCS1900 3860.4 to 3979.6 MHz
38,39
LOOP
FILTER
FL904
9 10
10 1
3,8
MATCHING
DEVICE
9 5
6 2
7
1
7
3
4
6
5,7,8,10
3
4
3
4
Figure 4 RF BLOCK DIAGRAM (2/2)
1,2
4
IC805
NL17SZ32XV5T2
5
LOGIC
BS2
IC802
16
17 2
PF08141B
PA MODULE
12
PA
7
850 / 900
APC
15
3,7,8,16
FL901
SAW FILTER
1 2
4
1
GSM850 Rx
3
2,5
GSM900 Rx
9
FL902
SAW FILTER
6
DCS Rx
1 PCS Rx
FL903
SAW FILTER
2,5
4 – 4
BS1
BS2
BS3
BS4
1800 / 1900
13
11
6,10,12,14
RF CONNECTOR
9 1
3,4
FL803
4 5
RF SWITCH
GSM850 Band;
Tx: 824.2 to 848.8 MHz
Rx: 869.2 to 893.8 MHz
GSM900 Band;
Tx: 880.2 to 914.8 MHz
Rx: 925.2 to 959.8 MHz
DCS1800 Band;
Tx: 1710.2 to 1784.8 MHz
Rx: 1805.2 to 1879.8 MHz
PCS1900 Band;
Tx: 1850.2 to 1909.8 MHz
Rx: 1930.2 to 1989.8 MHz
GX30
AERIAL
2
J801