The IC and tag antenna are placed on the tag material, typically PET plastic, and either finished with adhesive and/or a white-label face.Ĭountless other types of passive RFID tags exist on the market, but all tags generally fall into two categories based on form factor – inlays or hard tags. Passive RFID tags have no internal power source, and a standard passive RFID tag consists only of an IC and internal antenna this basic structure is commonly referred to as an RFID inlay. The backscatter, or change in the electromagnetic or RF wave, is detected by the reader (via the RFID system antenna), which interprets the information. ![]() The modulated RF energy that is sent back to the RFID system is called backscatter. Memory bank and then sends that information back out through the tag's antenna. ![]() The RFID tags receive the energy through the internal tag antenna, and then it travels to the connected IC. The RF energy allows the IC, or chip to turn on and modulate the energy with the information stored in their The reader sends energy to an antenna which converts that energy into RF waves that are sent out into the surrounding area. Unlike active RFID tags, passive RFID tags only have two main components – the tag's antenna, and the microchip or integrated circuit (IC).Īs the name implies, passive tags wait for a signal from an RFID reader. RFID reader or interrogator, an RFID antenna, and RFID tags. Generally speaking, three main parts make up a passive RFID system – an To see the full-size infographic, scroll to the bottom of this post. Active tags provide a much longer read range than passive tags, but they are also much more expensive. Because active RFID tags rely on a battery, they do not have a long lifespan, and must be replaced every 3-4 years. Active RFID tags are commonly used as “beacons” to accurately track the real-time location of assets or in high-speed environments such as tolling. Passive RFID labels can be purchased for around $0.09 per tag and printed quickly and efficiently with an RFID printer and be placed directly on an item.īattery-powered RFID tags that continuously broadcast their own signal. The lower price point per tag makes employing passive RFID systems economical for many industries. Passive RFID tags are used for applications such as access control, file tracking, race timing, supply chain management, smart labels, and more. Passive RFID systems use tags with no internal power source and instead are powered by the electromagnetic energy transmitted from an RFID reader. Below, we provide a short answer to these questions and more along with a more complex, long-form answer. ![]() If you're new to RFID, you might be wondering what the difference is between these types, and which one is best for your application. There are two kinds of RFID systems that exist- passive and active.
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