Mitigating 5G Interference Signals in the C-band

  • Author: Mehdi Ardavan
The coverage and capacity band of the new 5G cellular network will operate mostly at 3.3 to 3.6 GHz posing interference concerns with the C-band satellite communication terminals which receive Space-toEarth signals in the 3.4 to 4.2 GHz band. In this paper, we prove that the interference signal, in a worstcase scenario, could be orders of magnitude higher than what the C-band terminal can tolerate. We investigate possible solutions and present the products that can mitigate the interference. These products include LNBs with built-in filters and waveguide filters each of which may be a standalone solution or be combined to provide greater rejection of the interference. Guidelines on how to locate the C-band terminals are also presented.

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