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PDF RBS2206 Data sheet ( Hoja de datos )
| Número de pieza | RBS2206 | |
| Descripción | (RBS2106 / RBS2206) Radio Configurations | |
| Fabricantes | Ericsson | |
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EN/LZT 720 0318 Uen R2A
RBS 2106 and RBS 2206
Radio Configurations
Description
This document describes the radio configurations for RBS 2106 and RBS 2206.
TX1
dTRU
RX1
RX2
TX2
dTRU TX1
RX1
RX2
TX1
TX2
TX1
TX2
RX1
TX2 RX2
CXU
FCOMB
FCOMB
LNA
LNA
CDU-F
DPX X
X
TX/
RXA
Ant.
RXB
P007376A
E
1 ( 58 )
Free Datasheet http://www.Datasheet4U
1 page  
RBS 2106 and RBS 2206
Radio Configurations
3 Definitions
Tower Mounted Amplifier (TMA)
The TMA compensates for signal loss in the receiver antenna cables, reduces
system noise and improves uplink sensitivity. The TMA can consist of a duplex
filter. Duplex is the function that allows communication in two directions
(sending and receiving) on one channel.
The TMA used for 12 TRX products is Dual Duplex TMA (ddTMA).
Some configurations can use a TMA designed for reception only (rTMA).
Antenna Reference Point
The antenna reference point is the point where the radio signal crosses the
RBS border, that is, the connector for the antenna feeder. See the figure below.
Note: The TMA is inside the RBS border.
RBS
TRX
TRX
.
.
.
TRX
Combining
system
+
filtering
Antenna
X
X = Antenna reference point
Figure 3 Antenna reference point
P007531A
Antenna System
The antenna system is constituted by all RF transmission and reception
antennas, directed to cover the same area or multi-casting configurations.
Antenna Sharing Unit (ASU)
An ASU is used for sharing RX antennas between RBSs.
EN/LZT 720 0318 Uen R2A
5 ( 58 )
Free Datasheet http://www.Datasheet4U.com
5 Page 
RBS 2106 and RBS 2206
Radio Configurations
5.2 CDU-F Configurations
Configuration 1x4 CDU-F
TX1
dTRU
RX1
RX2
TX2
dTRU TX1
RX1
RX2
TX1
TX2 FCOMB
TX1
TX2 FCOMB
RX1
LNA
CDU-F
DPX X
DPX LNA DPX X
TMA
(optional)
1
2
TX2 RX2
CXU
LNA
1 = Antenna Reference Point without TMA
2 = Antenna Reference Point with TMA
X DPX LNA DPX X
TMA
(optional)
2
1
Figure 6 1x4 CDU-F
TX/
RXA
RXB
P007377B
Characteristics
Number of CDUs
Frequency band
Max. number of TRXs
Number of feeders
Number of antennas
Antenna configuration
TMA configuration
1
E-GSM
GSM 1800
4
2
2
TX/RX + RX
ddTMA + ddTMA or
ddTMA + rTMA
(F9dt_2.4)
(F18dt_2.4)
EN/LZT 720 0318 Uen R2A
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11 Page | ||
| Páginas | Total 58 Páginas | |
| PDF Descargar | [ Datasheet RBS2206.PDF ] | |
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