LGE
LG Electronics Inc.
15/21
[Figure 3-1] Block Diagram Of RD6100
Camera
IC
LCD
(128*128CSTN)
Camera
(VGA)
FM Radio
MCP
64*32Mb
1.2 Description of Receive Part Circuit
1.2.1 Duplexer (DP101)
The duplexer consists of the receive part bandpass filter (BPF) and the transmit part bandpass filter
(BPF) which have the function of separating transmit/receive signals in the full duplex system using
the transmit/receive common antenna. The transmit part BPF is used to suppress noises and spurious
waves entering the receive band among transmit signals in order to prevent the drop in receive
sensitivity characteristics. The receive part BPF blocks the signals sent out from entering the receive
end in order to improve sensitivity characteristics.
Insertion loss (IL) in the transmit band is 2.8dB (Max), whereas IL in the receive band is 3.5dB (Max).
The receive band attenuation amount of transmit filter is 45dB (Min) and the transmit band attenuation
amount of receive filter is 57dB or more (Min).
Z3X-BOX.COM
Содержание LG-UD6100
Страница 2: ...CDMA MOBILE SUBSCRIBER UNIT LG UD6100 SINGLE BAND CDMA MOBILE PHONE SERVICE MANUAL Z 3 X B O X C O M ...
Страница 25: ...Circuit Diagram Z 3 X B O X C O M ...
Страница 37: ...4 3 4 LCD Trouble Test Points Circuit Diagram CON 403 U307 Pin6 Pin1 Pin2 Pin35 Pin1 Pin34 Z 3 X B O X C O M ...
Страница 40: ...Test Points Circuit Diagram 4 3 5 UIM Trouble CON301 3 0V 3 2 1 Z 3 X B O X C O M ...
Страница 46: ...Test points Circuit Diagram 4 3 8 MIC Trouble R371 C327 M301 MIC Z 3 X B O X C O M ...
Страница 49: ...4 3 10 Earphone Trouble Test Points Circuit Diagram 1 2 3 4 5 CON402 R413 U303 U304 Z 3 X B O X C O M ...
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Страница 62: ...Z 3 X B O X C O M 0 Ohm Pad 0 Ohm Pad DNI DNI ...
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