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- Title
Compact folded square‐loop antenna for reading near‐field RFID tags in blood sample tracking system.
- Authors
Lin, Y.F.; Liao, C.T.; Chen, H.M.; Jiang, Z.D.
- Abstract
A highly compact (25 × 25 × 0.8 mm3) dual‐band folded square‐loop antenna is proposed for reading near‐field RF identification (RFID) tags. The antenna has a strong and uniform magnetic field in the near‐field zone of the square loop. The side length of the square loop (∼λ/16) generates resonant frequencies in two conventional modes (0.5λ and 1.0λ). Experimental interrogation of a small RFID button tag attached to a blood sample collection tube showed that the antenna has a small interrogation zone (15 × 15 mm2), which avoids unnecessary interrogation. Experiments also showed that with an input power of 25 dBm, the antenna can tag at a distance of up to 40 mm, which confirmed its suitability for reading button‐type RFID tags attached to blood sample collection tubes and other specimen containers.
- Publication
Electronics Letters (Wiley-Blackwell), 2017, Vol 53, Issue 25, p1627
- ISSN
0013-5194
- Publication type
Article
- DOI
10.1049/el.2017.1859