The Adaptation of a Microstrip Dipole Antenna for RFID Applications
Loubna Berrich1, Lahbib Zenkouar2
1Loubna BERRICH, Department of Electronic and Communication Laboratory, Mohammadia School of Engineers, EMI, Mohammed V University, Agdal, Rabat, Morocco.
2Lahbib ZENKOUAR, Department of Electronic and Communication Laboratory, Mohammadia School of Engineers, EMI, Mohammed V University, Agdal, Rabat, Morocco.
Manuscript received on 15 February 2017 | Revised Manuscript received on 22 February 2017 | Manuscript Published on 28 February 2017 | PP: 224-227 | Volume-6 Issue-3, February 2017 | Retrieval Number: C4870026317/17©BEIESP
Open Access | Editorial and Publishing Policies | Cite | Mendeley | Indexing and Abstracting
© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Radio frequency identification (Radio Frequency Identification) is a technology used primarily to identify tagged objects or to track their locations. An RFID tag is composed of integrated circuit. To design the antennas, it is necessary that the antenna must have an impedance value equal to the conjugate of the impedance of the IC to have a good adaptation allowing the maximum transfer of power. For the implementation of the impedance matching, there are several techniques. In this work, we are interested in the technique of adaptation T-match and the technique of adaptation by coupling. The T-match technique is based on the insertion of a second folded dipole at the center of the first dipole. This technique is modeled by an equivalent circuit to be able to calculate the dimension of the folded dipole to have a new input impedance of the antenna equal to the conjugate of the impedance of the integrated circuit. The second technique is based on the supply of the dipole via a small loop with inductive coupling placed in close proximity to the radiating body. The software used in this work is the Ansoft HFSS software which is based on the finite element method (FEM). The results obtained are satisfactory with a reflection coefficient that exceeds -22 dB.
Keywords: Microruban Dipole Antenna, RFID, Tag.
Scope of the Article: Microwave Antenna