Compact slotted planar inverted-F RFID tag mountable on metallic objects

A compact slotted PIFA-type RFID tag (900 MHz) mountable on metallic objects is presented. The proposed structure can be easily matched to most microchips and facilitates their attachment on its slot. The performance of the tag is evaluated by monitoring its radar cross-sections (RCSs) for various incident angles and chip impedances. The measured detection distance is 4 m.