LG LG9200 Service Manual page 37

3. Technical Brief
Transmitter Part Description(5)
2. Tx Part component Description
➄ Mobile Switch & Ant Switch
• Antenna Switch
- Select the Path - GSM / PCS Tx, GSM /
PCS Rx
- From DBB, three control signals (ANT_SW,
ANTSW_TXRX, ANTSW_BAND) are fed
into the Dual AND Gate
- Dual AND Gate Controls the Ant SW with
VC1 & VC2
GSM Tx Path
PCS Tx Path
GSM / PCS Tx Path
- 38 -