Highly conductive multifilament fibre material made of inorganic fibres coated with aluminium

摘要

Switching from LTE to 5G will bring about wide bandwidth and short latency.1 The significantly improved bandwidths and transmission speeds are based on frequency ranges of 3-300 GHz.However,this also results in new and increased requirements for the shielding of components in the corresponding electronic components to prevent electromagnetic interference(EMI).As a result of electromagnetic radiation,not only the performance of the respective devices is reduced,but the radiation is also harmful to our health,depending on its intensity.At 5G and a frequency of 3.5 GHz,about 3.5 billion electromagnetic waves/vibrations are hitting and radiating through the human body per second.The body absorbs a large part of this energy,which provokes thermal and athermal effects on the human body.These effects are not yet fully researched but are suspected to be dangerous for the human body.The effect on highly sensitive technical devices like surgery equipment,measurement systems or batteries was proven by several studies.EMI protective barriers are used to protect against unwanted emissions.These shielding materials have to be affordable to get access to everyday applications like electrical cars or electronic consumer devices.Fig.1 shows the switch to higher frequencies of new cellular frequency technologies.