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Guide
Apr 29, 2026UHF RFID Reader: Complete Buying Guide for Industrial, Warehouse and OEM Projects
Choosing the right UHF RFID reader is one of the most important decisions in an RFID project. The reader determines how far tags can be detected, how many tags can be inventoried, how stable the system will be in real environments, and how easily RFID data can be connected to your software, kiosk, warehouse system, production line, […]
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Knowledge
Apr 28, 2026
What Is Inductive Coupling in RFID? How LF, HF, and NFC Tags Work in the Near Field
What Is Inductive Coupling in RFID? Inductive coupling is the near-field magnetic coupling method used by most LF RFID and HF RFID/NFC systems. In this architecture, the reader generates an alternating magnetic field with a loop antenna, and a nearby tag with its own loop coil captures energy from that field. The tag then uses that harvested energy to power its […]
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Knowledge
Apr 25, 2026
What Is Load Modulation? How HF RFID and NFC Tags Send Data Back to a Reader
What Is Load Modulation? Load modulation is the uplink method used by most HF RFID and NFC tags to send data back to a reader in the near field. The tag does not generate its own RF carrier. Instead, it changes its electrical load across the tag coil, and that change is coupled back into the reader’s magnetic […]
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Knowledge
Apr 22, 2026
What Is Backscatter in RFID? How Passive UHF Tags Send Data Back to a Reader
What Is Backscatter in RFID? Backscatter is the communication method used by most passive UHF RFID tags to send data back to a reader without generating their own RF carrier. Instead of transmitting like an active radio, the tag uses the reader’s signal as both its power source and its communication medium, then changes how that signal is […]
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Knowledge
Apr 20, 2026
Near-Field vs Far-Field in RFID: What’s the Difference?
When people compare near-field vs far-field in RFID, they are really comparing two different ways energy and data move between the reader and the tag. In RFID, near-field systems are based on magnetic coupling and are typically associated with LF and HF/NFC, while far-field systems are based on radiated electromagnetic waves and backscatter and are typically associated with UHF RFID. That difference affects range, […]
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Knowledge
Apr 19, 2026
What Is Passive RFID? A Complete Guide to Passive RFID Tags, Readers, Frequencies, and Applications
Passive RFID is a type of radio frequency identification technology in which the tag has no internal battery. Instead, the tag is powered by energy from the RFID reader’s field and then sends data back to the reader. This battery-free design is the defining feature of passive RFID and one of the main reasons it is […]
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