A Compact Radio Frequency Identification Tag Antenna for Double-Side Anti-Metal Design

The present invention discloses a multi slot compact UHF RFID tag antenna model suitable for double-side anti metal. This design achieves precise adjustment of tag resonance frequency by creating multiple grooves on the top and bottom of this tag, while maintaining a compact physical size (40mm × 28mm × 3.2mm), making it easy to use in various environments. In addition, the tag design also solves the problem of reading difficulties that traditional RFID tags may encounter when attached to metal surfaces. Even on the metal surface, the chip and antenna can maintain good impedance matching, ensuring stable reading distances of at least 6 meters and 5.6 meters can be achieved even on a 200mm × 200mm metal plate with a transmission power of 4W EIRP.