Title :
Multibeam antenna array for RFID applications
Author :
Weisgerber, Lars ; Popugaev, Alexander E.
Author_Institution :
RF & Microwave Design Dept. Antennas & RF Circuits, Fraunhofer Inst. for Integrated Circuits, Erlangen, Germany
Abstract :
This paper presents a high performance 2 × 2 antenna array with a Butler matrix beamforming network for RFID applications in the UHF band 860 - 960MHz. The antenna elements as well as the Butler matrix are implemented using microstrip technology. Thanks to the applied original microstrip routing technique the design is very compact and has low fabrication costs. Performed RFID bulk measurements demonstrate an improvement of the reading reliability of passive RFID tags stacked in a pallet using the proposed antenna concept in contrast to the operation with a conventional singlebeam reader antenna.
Keywords :
beam steering; microstrip antenna arrays; radiofrequency identification; Butler matrix beamforming network; RFID bulk measurement; antenna element; bandwidth 860 MHz to 960 MHz; microstrip technology; multibeam antenna array; original microstrip routing technique; passive RFID tag; radiofrequency identification; singlebeam reader antenna; Antenna measurements; Antenna radiation patterns; Broadband antennas; Butler matrices; Radiofrequency identification;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
