Shielding

In RFID technology, shielding describes the blocking or attenuation of electromagnetic signals by physical obstacles. Liquids absorb the signals and metals cause intense reflection. This interferes with direct communication between the reader and the transponder. In industrial environments, this effect often occurs as an unwanted interference factor and significantly reduces the read range of identification systems. However, system planners also use shielding materials such as special UHF foils, RF shielding fabrics or metal sheets as a highly effective design tool. This allows RFID read zones to be precisely demarcated and unwanted stray reads at adjacent systems to be completely prevented. The exact demarcation of the antenna field using metallic partitions on a conveyor belt reliably isolates closely spaced reading stations from one another.

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