RFID tags operating in the high frequency band

A radio-frequency identification (RFID) tag for use in a microwave emission field comprising:

• an RFID chip;
• a coil antenna conductor comprising an inductor, wherein the inductor comprises a center and an outer edge of the coil antenna conductor bridged together with a conductive trace;
• a first split ring conductor;
• a second split ring conductor,
• wherein the first split ring conductor comprises a first gap and the second split ring conductor comprises a second gap,
• wherein the first split ring conductor and the second split ring conductor each have a respective portion that covers the antenna conductor and extends radially beyond both an inner edge and the center of the coil antenna conductor and beyond the outer edge of the coil antenna conductor, and
• wherein the first gap and the second gap allow the microwave current to flow through the coil antenna conductor.

A radio-frequency identification (RFID) tag for use in a microwave field comprising:

• a RFID chip secured to a shielded strap;
• a coil antenna conductor, wherein a center and an outer edge of the coil antenna conductor is bridged together with a conductive trace creating an inductor;
• and
• a split ring conductor,
• wherein a portion of the split ring conductor that covers the coil antenna conductor extends radially beyond both an inner edge and the center of the coil antenna conductor and the outer edge of the coil antenna conductor.