Service manual

GTC Service Manual
ASUS Proprietary 33
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華
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碩
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電
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腦
8.3
8.3 8.3
8.3 WCDMA Block Diagram
WCDMA Block DiagramWCDMA Block Diagram
WCDMA Block Diagram
Key Components
 Duplexer (U900)
1. TX to ANT Insertion Loss (1920...1980MHz) 1.2dB
2. ANT to RX: Insertion Loss (2110...2170MHz) 1.9dB
3. TX to RX: 57dB
 WCDMA Transceiver RF3100 (U906)
1. Single band application (UMTS band1)
2. 3GPP release 5, power class 3
3. Zero Intermediate Frequency
 WCDMA PA (U903)
1. VCC：2.75V
2. VDD：1.8V
 Coupler (U905)
Coupling：19.30 ± 1.00 dB