Protect your C-band Service

In response to a gradual deployment of 5G services across the Asia-Pacific, AsiaSat has begun the development of 5G interference rejection bandpass filter (BPF) since mid-2018, as one of the various mitigation measures to protect our customers’ C-band traffic against out-of-band interference from nearby 5G base stations.

This new filter is co-developed by AsiaSat’s product team who has extensive experience in space filter specification design, simulation and hardware testing, and the microwave expert in Hong Kong and hardware vendors experienced in ground telecom filter manufacturing.

With the launch of the first in the series - BPF-3700S, the model specially designed for 5G spectrum requirements for China and Hong Kong SAR markets, and verified by the Academy of Broadcasting Planning of the National Radio and Television Administration (NRTA), AsiaSat has now developed 11 different models to address the needs of different markets, including the BPF-4230 model with add-on features to suppress radar signals generated by altimeters built on aircraft.  

These high performance bandpass filters have been extensively installed in customers’ antenna sites across Greater China, South Asia, South East Asia, Australasia and the Middle East.  They have proven to be effective in preserving the quality of satellite transmission, even with 5G base stations operating within close proximity. 

Contact our expert team NOW, we will provide the best solution that meets your needs.

AsiaSat BPF’s Key Benefits

• Flexibility: Customised solution for different 5G bands in different countries. A series of models available with optimised rejection and passband to reject 5G spectrum up to 3.6, 3.7 and 3.8 GHz
• Performance: Excellent RF performance on both the in-band and out-of-band
• Compact: Standard WR229 interface, 12cm length and less than 530g mass. One of the shortest and lightest BPFs in the market
• Reliability: Warranty up to two years, the longest in the market, which assures safe use of the BPF products

Field Test Results

• Out-of-band 5G interference rejection: Can suppress interference signals from 5G base stations in less than 100m with full power transmission
• In-band satellite carrier link margin degradation: AsiaSat BPF in-band result outperforms other filters over the standard FSS C-band frequencies. Below is the satellite TV carrier MER degradation test result, compared to the performance of the configuration without a BPF

The compact size AsiaSat BPF installed between the antenna OMT output and the LNB input in a 3.7m TVRO antenna.