A Reconfigurable Passive UHF Reader Loop Antenna for Near-Field and Far-Field RFID Applications
This letter presents a passive UHF printed loop antenna with left-handed loading. The RFID reader antenna can work at near- and far-field operation within the European UHF (865-868 MHz) band. The operation frequency and radiation properties can be modified by employing varactor diodes. Also, the ant...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/7947 |
| Acceso en línea: | http://hdl.handle.net/10578/7947 |
| Access Level: | acceso abierto |
| Palabra clave: | Metamaterials Radiofrequency Identification (RFID) Left-Handed Loading Loop Antenna |
| Sumario: | This letter presents a passive UHF printed loop antenna with left-handed loading. The RFID reader antenna can work at near- and far-field operation within the European UHF (865-868 MHz) band. The operation frequency and radiation properties can be modified by employing varactor diodes. Also, the antenna can work in the near-field region having a flat magnetic distribution in the interrogation zone. A comparative study with other passive RFID reader conventional antennas shows that the left-handed loop achieves stronger near Hfield with good impedance matching. Design details, simulated results and a fabricated prototype are presented. The concept significantly extends the design degrees of freedom for RFID antennas. |
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