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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
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Strict confidential
Figure 64 : Frequency response of the 920-928MHz cavity filter
1.8.3.8
902-928MHz cavity filter
The 902-928MHz cavity filter is typically dedicated to the North American market. The
purpose of this filter is to allow co-located LTE850 base stations, in case of poor isolation
between antennas (less than 50dB).
The 902-928MHz cavity filter characteristics are detailed in the following table:
Characteristics
Specification
Center Frequency
915 MHz
Pass band
902-928MHz
Insertion losses
≤1.5dB
Ripple
≤0.7dB
Return Loss
≥20dB
Rejection
≥45dB @ 850-894MHz
≥45dB @ 935-960MHz
Impedance
50 ohms
Power Handling
≤10W
Temperature
-40°C to+85°C