paper 150305042933

Published: 2015-07-09

Analysis of Quasi-circular Polarization in Near Field of Smart Shelf RFID Antenna Radiation

Andrey S. Andrenko

SYSU-CMU Shunde International Joint Research Institute, China

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Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1552-1556

Abstract

This paper presents the EM simulation and accurate analysis of quasi-circular polarization (CP) of the so-called smart shelf antenna designed for the UHF RFID retail and item-tagging applications. The design of the proposed antenna is based on the EM coupling between the open-ended or shorted-to-the ground meander microstrip (MS) line utilizing the standing wave current-voltage distribution and periodic metal strips printed on the top surface of a dielectric substrate. It has been confirmed by the series of full-wave EM simulations that the proposed antenna creates strong near field within the entire volume where multiple RFID tags are placed. The required quasi-CP near field has been numerically optimized by utilizing the three-section layout of the periodic metal strips and changing the angles of strip sections so that it results in both Ex- and Ey-components being produced. The prototypes with different layouts of the proposed antenna have been produced and their performance in the UHF RFID system has been verified.

Citation

Andrey S. Andrenko, "Analysis of Quasi-circular Polarization in Near Field of Smart Shelf RFID Antenna Radiation," Proceedings of 2015 Photonics & Electromagnetics Research Symposium, Prague, July 6 - 9，Page(s)1552-1556

References

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