General Description - LG U8130 Service Manual

3. TECHNICAL BRIEF

3.6 General Description

The RF part includes a dual-band GSM/DCS part (900 and 1800MHz) and W-CDMA part for IMT-2000
(UL 1900MHz, DL 2100MHz). It also contains Antenna Switch, WCDMA duplexer, WCDMA Power
Amplifier and GSM Power Amplifier.
The whole structure of Radio part is shown in Figure 3-1.
Figure 3-1. Block diagram of RF part
Starting at the antenna end, an antenna switch provides switching capability needed for three
frequency bands (900, 1800 and 2100MHz). For the W-CDMA part, duplexer is included to facilitate
the simultaneous transmission and reception required for the FDD mode.
The main components in the radio are Wopy (W-CDMA receiver ASIC), Wivi(W-CDMA transmitter
ASIC), Ingela(GSM/GPRS transceiver) and two power amplifiers.
The mixed-signal circuit ASIC, Vincenne provides power supply for the main RF components.
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