IIIE 20352
INSTITUTO DE INVESTIGACIONES EN INGENIERIA ELECTRICA "ALFREDO DESAGES"
Unidad Ejecutora - UE
artículos
Título:
Wide axial-ratio bandwidth crossed dipole RFID antenna
Autor/es:
PERUZZI, VICTOR M.; PEROTONI, MARCELO B.; MASSON, FAVIO R.; MANDOLESI, PABLO S.
Revista:
AEU INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS
Editorial:
ELSEVIER GMBH, URBAN & FISCHER VERLAG
Referencias:
Año: 2020 vol. 125
ISSN:
1434-8411
Resumen:
A circularly polarised RFID tag antenna with wide axial ratio bandwidth, wide impedance bandwidth and simple tuning network is presented. The antenna, based on the widely used crossed-dipole design, incorporates a novel matching network based on two large L-shaped strips joining the arms of the dipoles to match the impedance. The L-shaped strips create large area loops enabling the antenna to be adapted to the high inductances required for good matching without the currents flowing through them degrading the axial ratio of the antenna. The gain pattern, input impedance and axial ratio (AR) are computed with numerical simulation and measurements, resulting in a 30 MHz bandwidth based on the −3 dB Axial Ratio criterion, which can provide a maximum reading distance of 12.8 m.
