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Airlogic ABM-400 Manual de usuario Pagina 52

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regions is a hindrance in developing a unique RFID system that can be deployed worldwide.
Refer table for more details [4], [5].
Table2.
Geographical variation in Frequency Ranges
Frequency
Zones
Low
Frequency(LF)
High
Frequency(HF)
Ultra High
Frequency(UHF)
Microwave
US and
Canada
125 - 134 KHz 13.56 MHz 902 - 928 MHz 2.4 - 2.48 GHz
Europe 125 - 134 KHz 13.56 MHz 868 - 870 MHz 2.4 - 2.48 GHz
Japan 125 - 134 KHz 13.56 MHz 950 - 956 MHz 2.4 - 2.48 GHz
Functionality
Based on functionalities, tags may be classified as passive, active and semi-passive. Passive tags
are not supported with batteries, but they are powered by the energy supplied by reader field.
Passive tags are cost effective and used in supply chain for identifying and tracking objects.
Active tags are battery powered. See Figure 12. They can be used for long-range applications.
Semi-passive tags are supported with batteries, but they are activated by the reader field. These
tags are used for capturing additional details like temperature, humidity, etc.
Figure12.
Tag Functionality
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