There are a handful of factors that can affect RFID, NFC, or UHF tag read ranges. If you’re interested in understanding the various aspects that affect RFID read range to improve your RFID application or use case, continue reading! Tag Characteristics (SOAP) SOAP is an acronym for the various factors that affect an RFID tag’s performance; size, orientation, angle, and placement. Not to be confused with Simple Object Access Protocol (SOAP). S Size O Orientation A Angle P Placement Inlay Size — As a rule of thumb, the bigger the tag inlay,

Inlay The tag inlay consists of the integrated circuit (IC), an antenna, and a substrate to hold it all together. The inlay, on its own, is a fully functional tag; ready to be packaged into either a smart label or another casing. Integrated Chip (IC) The IC is an electronic circuit or microchip that is manufactured at a semiconductor plant. This microchip contains a memory store and a microprocessor or decision making (logic) unit. The IC is configured either as a passively powered device (powered by inductive coupling generated from

The latest standardization of the Ultra-High Frequency RFID spectrum is the GS1 UHF Gen2 protocol (ISO/IEC 18000-63), which defines the technical specifications (e.g., physical/logical interactions between devices, anti-collision algorithms, security commands, etc.) for RFID devices operating in the frequency of 860–860 MHz. The ITU designated UHF (Ultra-High Frequency) as the radio frequency range of 300 MHz to 3 GHz, while the IEEE defines UHF as only frequencies between 300 MHz and 1 GHz (the rest of the ITU–defined UHF frequency range overlaps with the IEEE’s frequency allocations for the L band and

Active Tag: A battery-powered RFID tag that powers the circuitry that transmits the signal to a reader. Active tags differ from passive tags in that they have longer read ranges, a higher price tag, and a larger size (due to the battery). Antenna: The element built into both RFID readers and tags that radiates and receives radio energy. Automatic Identification (also called automatic data capture): The ability to collect and enter data directly into computer systems without human involvement through technologies such as barcodes, biometrics, RFID, and voice recognition. Backscatter:

The frequency range of an RFID system has a significant impact on multiple performance metrics like the read range and interference susceptibility, so it’s important to make sure you select the right frequency for your business application or use case.    LF/NFC HF UHF Frequency range 125 – 134.2 KHz 13.56 MHz (global) 433, 865 – 828 MHz (varies regionally) Read range < 10 cm < 1 m 1 – 100 m Tag cost Relatively expensive Varies Inexpensive (in high volumes) Reader cost Relatively inexpensive (established technology) Relatively inexpensive (established technology) More expensive

The primary difference between active and passive tags is that active tags have their own power source (typically an embedded battery) and passive tags rely on the RFID reader’s propagation signal to power the tag. From this primary distinction stems a variety of considerations to make when deciding between the two types of tags. This article aims to help aid you in deciding which type of tag — active or passive — is best for your business application by laying out some of the most pivotal factors you should consider.   Active

In its most rudimentary form, an RFID system is made up of two parts; a transponder (a tag) and an interrogator (a reader). The transponder, which consists of an inlay which has a microchip, an antenna, and usually a substrate (the stuff that holds the tag’s components together) and optionally an encasing to protect the inlay from various environmental factors, is encoded with information specific to the object it is attached to or associated with, such as a serial number. The interrogator reads the transponder’s information by emitting a signal to the transponder