Radio Frequency Spectrum
The gamut of incidence of motion of electrical charges within a circuitry commonly called radio frequency may be expanded as essential electromagnetic waves in space varying upon the number of cycles electrical current resonate in a coupling. This is categorized as low frequency, high frequency, ultrahigh frequency, and microwave.
Figure 3 : Radio Frequency FieldLegend
Arrow = Direction of the RF field
Dash = Radio Frequency (Signal)
The figure shows that the RFID reader or interrogator creates a radio-frequency field dependent on the specifications of the users to activate multiple passive tags, and to interrogate multiple active tags simultaneously. This means that the multiple RFID tags can be read simultaneously. An interrogator can be programmed to read as much as fifty (50) tags per second .
The RFID tags can be programmed to contain an encryption on information that allows it to be tracked and monitored as to the movements of packages in the supply chain, whether in pallets, in boxes or in container vans, even in boats merchandize can be tracked.
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