Multiple-port reader antenna with three modes for UHF RFID applications

Affiliation of Author(s):电子信息工程学院

Journal:ELECTRONICS LETTERS

Key Words:UHF antennas radiofrequency identification antenna feeds antenna radiation patterns magnetic fields multiple-port reader antenna three modes UHF RFID applications ultra-high frequency radiofrequency identification near-field applications ultra-high frequency radiofrequency identification far-field applications radiation properties far-field radiation orthogonal polarisations magnetic field coupling European UHF bands Chinese UHF bands frequency 820 MHz to 880 MHz

Abstract:A multiple-port reader antenna for ultra-high frequency (UHF) radio-frequency identification (RFID) near-field and far-field applications which has three modes is proposed and studied. Three fed-ports are designed into the structure, which provide different radiation properties. Specially, far-field radiation for two orthogonal polarisations and near-field operation based on magnetic field coupling can be modified by feeding different corresponding port. The RFID reader antenna can work at three different operations within 820-880 MHz, including European UHF (865-868 MHz) and Chinese UHF (840-845 MHz) bands. Design details, simulation, and measured results are also presented.

ISSN No.:0013-5194

Translation or Not:no

Date of Publication:2018-03-08

Co-author:郑景明,hxx

Correspondence Author:Yang Yang

Date of Publication:2018-03-08