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 70 / 221
Strict confidential
1.5.5.2
Connectors
The dual duplexer includes the following connectors:
Module side
Connector / interface
Description
Top side
ANT1 RF connector (SMA)
LoRa RF signal #1 to be connected to the
LoRa antenna # 1
Top side
TX1 RF connector (SMA)
LoRa TX signal #1 to be connected to the
front-end RF # 1 TX
Top side
RX1 RF connector (SMA)
LoRa RX signal #1 to be connected to the
front-end RF # 1 RX
Top side
ANT2 RF connector (SMA)
LoRa RF signal #2 to be connected to the
LoRa antenna # 2
Top side
TX2 RF connector (SMA)
LoRa TX signal #2 to be connected to the
front-end RF # 2 TX
Top side
RX2 RF connector (SMA)
LoRa RX signal #2 to be connected to the
front-end RF # 2 RX
Figure 35: Connectors of the dual duplexer
Note:
SMB to SMA coaxial cables are used to connect the duplexer to the antenna
connectors.
1.5.5.3
Technical performance
The main RF characteristics of the dual duplexer are detailed hereafter:
Description
Specification RX band
Specification TX band
Band pass frequency range
902-915 MHz
923-928 MHz
Center frequency
908.5 MHz
925.5 MHz
Return Loss
>20dB
>20dB
Ripple
<1.0dB
<0.5dB
Insertion losses
<2.0dB
<2.0dB
Rejection
≥70 dB@923-928 MHz
≥70 dB@902-915 MHz
≥60 dB@50-850 MHz
≥60 dB@50-850 MHz
≥50 dB@850-894 MHz
≥60 dB@850-894 MHz
≥60 dB@935-960 MHz
≥50 dB@935-960 MHz
≥60 dB@960-2000 MHz
≥60 dB@960-2000 MHz
≥50 dB@2000-3000 MHz
≥50 dB@2000-3000 MHz