Only For Training And Service Purposes - LG GU280 Service Manual

3.3.4. Front-End Module (FEM)
■ Low-loss SAW frontend module for mobile telephone system
■ Covering GSM850, GSM900, GSM1800, GSM1900,
WCDMA 2100 bands
■ Integration of TX low pass filters, switches and decoder
■ Integration of GSM 850, EGSM, PCN and PCS RX SAWs
■ Balanced outputs of all RX ports, diplexed for GSM 850/ EGSM
■ Integration of ESD protection at Ant port to 8kV
acc. IEC-61000-4-2 (contact discharge)
Copyright © 2009 LG Electronics. Inc. All right reserved.

Only for training and service purposes

Figure 1.3.4.1 Block diagram of FEM
- 23 -
3. Technical Brief
LGE Internal Use Only