Functional Description; General - Dekolink DEKO2408 Product Manual

D W
EKOLINK IRELESS

2. FUNCTIONAL DESCRIPTION

2.1 G
ENERAL
The High selectivity Mini Repeater functional operation is based on a duplexed
path configuration. In each path, the signal is down-converted to an
Intermediate Frequency (IF); filtered by a Surface Acoustic Wave (SAW) filter
and up-converted back. This configuration gives sharp out of band attenuation
for improved isolation between the receiving and transmitting paths.
2.2 F
UNCTIONAL
2.2.1 Signal Path
The following process is performed in both the Uplink and Downlink paths of
the Repeater (see Figure 3).
The incoming RF signal from either the Base antenna (from the BTS) or from
the Mobile antenna (from the mobile handset) enters the Repeater and is first
filtered by the Duplexer. The incoming signal is amplified by an Automatic
Gain Control (AGC) amplifier (AMP). The signal is then down-converted to an
Intermediate Frequency (IF).
Figure 3: Mini Repeater - Block Diagram
The input IF signal is next filtered by a Surface Acoustic Wave (SAW) filter.
After filtration, the signals are converted to RF signals by the Up-Converter.
This processing path provides sharp out-of-band attenuation that improves the
isolation between the receiving and transmitting paths.
Pub. 308-2005 Rev. 2.00S
L . M R
TD INI EPEATER
D
ESCRIPTION
D 2408-09
EKO
Proprietary Data
P M
RODUCT ANUAL
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