Wirnet iBTS
Document title : Installation and
Maintenance Manual
Version : 2.0
Author : SNI
Date : 04/12/2018
Classification
This document is the strict property of Kerlink and shall not be either copied nor sent without express
written authorization of Kerlink
Internal Use
Kerlink m2m technologies reserved rights
Confidential
Kerlink – 1 rue Jacqueline Auriol – 35235 THORIGNÉ-FOUILLARD
Page 38 / 221
Strict confidential
1.4.5
Wirnet iBTS FDx
The following figure describes the functional architecture of a full-duplex version, featuring a
maximum of 72 Rx channels and 8 Tx channels.
Figure 16: Wirnet iBTS FDx block diagrams
In this particular configuration, the mechanical front-end lids and front-end boards of each
individual “LoRa Module” are removed. They are replaced by a bigger RF front end board
and front-end lid that combine the 4 LoRa modules together.
The bigger RF front-end board is configured to support a single antenna (72 Rx channels, 4 Tx
channels) and two antennas (2x36 Rx channels, 2x4 Tx channels).
A dual cavity duplexer is used for RF filtering and duplexing.
The GPS (GNSS) connector, the WAN (LTE) connector and LoRa connectors are available on
the bottom side of the enclosure. The antennas are all external antennas.
