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 61 / 221
Strict confidential
1.5.4.4.2
Front-end board - Four modules
The following block diagram details the architecture of the front-end board, in a four
modules configuration:
Figure 31: Front-end 4 modules board block diagram
The front-end board integrates two TX and two Rx paths (RF1 path and RF2 path). Each
TX/RX path is connected to one SMB antenna port (RF1 and RF2 respectively).
The front-end board is derived in two different versions to cover the unlicensed bands:
915MHz (902-928MHz)
923MHz (915-928MHz)
The details of the frequency bands, channelization, out of band rejection are detailed in
§1.5.4.6.
1.5.4.4.3
Front-end board- Four modules Full-Duplex
The following block diagram details the architecture of the front-end board, in a four
modules full-duplex configuration:
RF1 antenna
RF2 antenna
RF1 path
RF2 path
