Recent Advances in Passive UHF-RFID Tag Antenna Design for Improved Read Range in Product Packaging Applications: A Comprehensive Review

Radio frequency identification (RFID) is a rapidly developing technology, and RFID sensors have become important components in many common technology applications. The passive ultra-high (UHF) tags used higher data transfer rate longer read range usually come unique small portable application designs. However, these suffer from significant interference when mounted on metallic materials or placed near liquid surfaces. This paper presents the recent advancements made UHF-RFID tag designs proposed to resolve problems. We focus those that are intended improve antenna as well scalability for miniaturized