RFID Tag Antennas

RFID tag antennas are develop for a unique purpose   and their design can actually disclose some information about the tag itself. You can find whether the tag is Low Frequency, High Frequency, or Ultra-High Frequency, and then have a common idea of the tag’s read range.Generally, if you know what to look for it is pretty easy to detect the frequency at which the tag operates just by examining the tag.That is because the correlation between the tag antenna design and the way the tag talks to the RFID reader/antenna will reveal the frequency.   Below, the three main frequency types are outlined, including information about each : Low Frequency (LF) Frequency: 125 – 135 kHz – generally, 124 kHz, 125 kHz, or 135 kHz Read Range: Touch to 45.7 cm (18 in) under ideal conditions Coupling Technique: Inductive coupling – reader’s antenna generates a magnetic field to activate an electric current in the RFID tag antennas Antenna Design: Typically, circularly co...