With the 5G cellular base station testing and large-scale deployment of mobile communication operators. The interference of the 5G spectrum with the FSS Ext.C band (3.4-3.7 GHz) or the standard C band (3.7-4.2 GHz) will become more and more serious.
To solve the problem of co-channel interference and adjacent-channel interference in the 5G spectrum, Dolph Microwave has developed a new type of microwave bandpass filter (BPF). This bandpass filter is mounted on the C-band antenna to filter out interference signals from surrounding 5G base stations.
C-Band Pass Waveguide Filter
Dolph Microwave’s BPF design balances in-band and out-of-band performance requirements for most C-band earth stations affected by 5G interference, especially for earth stations that have insufficient link margins and have to coexist with nearby 5G base stations.
- MODEL: DH-40WBPF
- Frequency Range: 3.7 to 4.20 GHz (Options ext. C-band)
- VSWR: 1.2 : 1 max.
- Insertion Loss: 0.4 dB max.
- Rejection:
- 25 dB min at 3.65 GHz and 4.25 GHz
- 60 dB min at 3.55 GHz and 4.35 GHz
- 70 dB min at 3.5 GHz and 4.4 GHz
- Waveguide Flange CPR-229G (input), CPR-229F (output)
- Dimensions (L x W x H) 120 mm x 100 mm x 70 mm
- Weight < 500 g
After actual testing and use by customers, DH-40WBPF can reliably and effectively protect existing C-band satellite services from interference carriers from adjacent frequency bands. Even in the case of large-scale deployment of 5G services, the normal operation of user services can be protected.
