A Dual-Resonant Microstrip-Based UHF RFID "Cargo" Tag
2008
We present a novel passive UHF RFID "cargo tag" capable of operating in two different graphic regions such as Europe and North America. The tag utilizes a dual-resonant, dual-polarized, microstrip antenna. The resulting tag operates efficiently over ETSI and FCC frequency ranges and achieves excellent efficiency. The tag antenna eliminates any cross-layer structures such as a via and may be manufactured efficiently using traditional, low-cost "inlay" technology. We estimate the free-space read distance to be between 9.3 and 13.1 meters (30 and 43 feet).
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