Fem For Triband - LG KG225 Service Manual

3.2 FEM for Triband

Select Mode
EGSM-Rx
EGSM-Tx
DCS-Rx
PCS-Rx
DCS/PCS
Vc(EGSM)
Low
High
Low
Low
Low
Table 3-1 Band SW Logic Table
GND13 PCS_RX2
24
GND12 PCS_RX1
23
GND11 DCS_RX2
22
GND10 DCS_RX1
21
GND9 EGSM_RX2
20
GND8 EGSM_RX1
19
GND7
18
GND6
17
GND5
16
GND4
7
GND3 DCSPCS_TX
6
GND2 EGSM_TX
4
GND1
2
FL500
HWXQ511
C540 C541
270p 270p
Figure 3- 2 FEM CIRCUIT DIAGRAM
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3. TECHNICAL BRIEF
Vc(DCS/PCS)
15
14
13
12
11
10
5
8
R516 0
ANT_SW1
R518 0
ANT_SW2
Low
Low
Low
Low
High