Why do RFID tags not always work?
Tags don’t always work because they may be the wrong design for the job, placed in the wrong location, or masked by some interference. RFID tags are tuned electronic circuits requiring a special match between the tag’s antenna and integrated circuit(IC), called complex conjugate. Just like your car radio must be tuned to a specific station to hear correctly, and the car’s antenna needs to be up to get a good signal. If an RFID tag antenna is placed near metal it can be detuned, essentially blocking the signal, this leads to a mismatch with the IC. The tag system is then unable to harvest energy from an electromagnetic field, causing it to not function. This issue can and has been resolved through testing for the optimal tag for the item to be tracked. For instance specialized technologies designed to work well on metal emerged in 2008 which make tracking items like servers or laptops 100% reliable. But the trade-off between cost and performance is important, since tag costs are often r
Related Questions
- FREQUENTLY ASK QUESTIONS ON RFID TAGS AND INLAYS (FAQs): 1. Will one of the systems using one of the frequencies of 13.56 MHz, 915 MHz and 2450 MHz be used in all applications?
- What are the advantages of SOLDERED interconnected RFID tags and compression-formed and adhesive bonded tags?
- What are the limitations of thick-film printed antenna RFID tags?
