Installation Manual

DEKOLINK WIRELESS LTD. PRODUCT MANUAL IDEN REPEATER
2. FUNCTIONAL DESCRIPTION
2.1 GENERAL
This repeater is designed to help improve communications signal by extending the
coverage of a base station. The Donor (Base) antenna receives the signal from a base
station and conveys it to the CDMA Repeater. The Repeater amplifies the signal.
After amplification, the signal is passed through to the Mobile antennas. Conversely,
signals from handsets are amplified and retransmitted by the Repeater to the base
station.
2.2 FUNCTIONAL DESCRIPTION
The incoming signal processing in the CDMA Repeater is processed similarly for
both the Uplink and Downlink paths. Figure 1 provides a functional block diagram of
the CDMA Repeater.
Figure 1: CDMA Repeater - Block Diagram
The block diagram showed in Figure 1 illustrates the overall functionality of the
CDMA Repeater. Dekolink’s programmable CDMA Repeaters employ advanced
up/down conversion Intermediate Frequency (IF) Surface Acoustic Waves (SAW)
filtering architecture. This new technology offers distinct advantages over
conventional repeaters, when high adjacent selectivity and spectrum purity is
required.
The Channeler Module (center unit) consists of dual Radio Frequency Up/Down
Converter sub-modules for Downlink and Uplink paths. The Channeler amplifies the
received RF signals and converts them into an intermediate frequency (IF). The IF
outputs are connected to a SAW Filter. The IF outputs are converted back to the
original RF frequencies.
The cellular modem is an option for remote monitoring and repeater parameters
control.
Pub. 311-2005 Rev. 1.0 Proprietary Data Page 5