TUTCRIS - Tampereen teknillinen yliopisto

TUTCRIS

Circularly Polarized Corner-Truncated and Slotted Microstrip Patch Antenna on Textile Substrate for Wearable Passive UHF RFID Tags

Tutkimustuotosvertaisarvioitu

Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko14th European Conference on Antennas and Propagation, EuCAP 2020
KustantajaIEEE
Sivumäärä5
ISBN (elektroninen)9788831299008
DOI - pysyväislinkit
TilaJulkaistu - 1 maaliskuuta 2020
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaEuropean Conference on Antennas and Propagation - Copenhagen, Tanska
Kesto: 15 maaliskuuta 202020 maaliskuuta 2020

Julkaisusarja

Nimi14th European Conference on Antennas and Propagation, EuCAP 2020

Conference

ConferenceEuropean Conference on Antennas and Propagation
MaaTanska
KaupunkiCopenhagen
Ajanjakso15/03/2020/03/20

Tiivistelmä

We present a compact circularly polarized (CP) antenna for wearable passive UHF RFID tags. The antenna is a square-shaped microstrip patch antenna where we have applied corner truncation and slotting techniques in the top layer conductor for achieving the CP property and a shorting pin and loop structure for impedance matching. Despite using a lowpermittivity textile as antenna substrate, the antenna's footprint size is only 5-by-5 cm, which is approximately 15% of the operating wavelength. At the same time, the on-body measurements, the antenna's axial ratio is 0.9 dB and the measured attainable read range (reader's EIRP =3.28W) of the tag reaches 4.2 meters with a CP reader antenna and ranges from 2.9 meters to 3.4 meters for a linear reader antenna, depending on the rotation angle between the antennas.