Tag - RFID

Exploring UHF RFID: Power, Modulation, and Global Standards

Radio Frequency Identification (RFID) technology is increasingly being used to track just about everything. Indeed, applications of the technology include diverse areas ranging from business inventory management to crowd control at large public events. As we delve further into the era of the internet of things, the use of RFID is expected to rise even more. There are a number different types of RFID technologies in use today, differentiated by the electromagnetic frequencies they use and whether their tags are passive or active. One type of RFID tag technology that has been growing in use more recently is that which uses the Ultra High Frequency (UHF) band of the electromagnetic spectrum. The UHF band encompasses radio frequencies from 300 MHz to 1 GHz, but the UHF RFID tags and readers that are making the most waves recently are those that use the 860 MHz - 960 MHz portion of the spectrum. But how exactly do UHF RFID tags work?

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