Title :
Compact printed monopole tag antennas for UHF RFID applications
Author :
Abdulhadi, Abdulhadi E. ; Abhari, Ramesh
Author_Institution :
Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
In this paper, three compact printed monopole antennas are designed for use in UHF RFID that contain a chip with input impedance of 8.2-J61Ω. The challenges in the design of these antennas are conjugate matching of the antenna to the chip while achieving a small layout area. Inductive coupling via a printed loop is employed to eliminate the need for a matching circuit with lumped components. For each antenna, the loop area and proximity of it to the radiating body is optimized to obtain a relatively wide band (on the order of 940 MHz, from 530 MHz to 1.47 GHz) matching. Of the three designs, the proposed 3D meander monopole offers the smallest foot print and yields a 70% area reduction in comparison to a folded printed dipole that is commonly used in RFIDs.
Keywords :
UHF antennas; microstrip antennas; monopole antennas; radiofrequency identification; 3D meander monopole; Inductive coupling; UHF RFID applications; compact printed monopole tag antennas; conjugate matching; folded printed dipole; frequency 530 MHz to 1.47 GHz; lumped components; matching circuit; printed loop; Antenna radiation patterns; Dipole antennas; Impedance; Radiofrequency identification; Three dimensional displays; UHF antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2010 IEEE
Conference_Location :
Toronto, ON
Print_ISBN :
978-1-4244-4967-5
DOI :
10.1109/APS.2010.5561172