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Front. Inform. Technol. Electron. Eng.  2012, Vol. 13 Issue (5): 365-375    DOI: 10.1631/jzus.C1100239
    
A novel frequency-selective metamaterial to improve helix antenna
Iraj Arghand Lafmajani, Pejman Rezaei
Department of Electrical and Computer Engineering, Semnan University, Semnan, Iran
A novel frequency-selective metamaterial to improve helix antenna
Iraj Arghand Lafmajani, Pejman Rezaei
Department of Electrical and Computer Engineering, Semnan University, Semnan, Iran
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摘要： A novel frequency-selective metamaterial with negative permittivity and permeability for improving directivity and gain of a helix antenna is presented in this paper. The proposed metamaterial is composed of two Z-shape resonators printed on opposite sides of a dielectric substrate. Two forms of multilayered cells are found to be suitable for antennas and waveguides applications. In addition, a new method of designing a metamaterial-based helix antenna is presented with high directivity and gain. A comparison on radiation properties is given between the conventional and the new metamaterial-based helix antennas. Two comparisons on radiation properties are performed: (1) the effect of proposed Z-structure on monopole, dipole, and helix antennas; (2) the effect of OE3, split-ring resonator (SRR), and proposed Z-structure unit cells on the performance of helix antennas. The results show improvement of parameters such as directivity, gain, and radiation power of the new metamaterial-based helix antenna. Therefore, the combination of Z-structure with the helix antenna shows the best performance.
关键词： Antenna efficiency;  Negative permittivity;  Negative permeability;  Helix antenna;  Metamaterial    
Abstract: A novel frequency-selective metamaterial with negative permittivity and permeability for improving directivity and gain of a helix antenna is presented in this paper. The proposed metamaterial is composed of two Z-shape resonators printed on opposite sides of a dielectric substrate. Two forms of multilayered cells are found to be suitable for antennas and waveguides applications. In addition, a new method of designing a metamaterial-based helix antenna is presented with high directivity and gain. A comparison on radiation properties is given between the conventional and the new metamaterial-based helix antennas. Two comparisons on radiation properties are performed: (1) the effect of proposed Z-structure on monopole, dipole, and helix antennas; (2) the effect of OE3, split-ring resonator (SRR), and proposed Z-structure unit cells on the performance of helix antennas. The results show improvement of parameters such as directivity, gain, and radiation power of the new metamaterial-based helix antenna. Therefore, the combination of Z-structure with the helix antenna shows the best performance.
Key words: Antenna efficiency    Negative permittivity    Negative permeability    Helix antenna    Metamaterial
收稿日期: 2011-08-20 出版日期: 2012-05-03
CLC:  TN82  
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Iraj Arghand Lafmajani
Pejman Rezaei

引用本文:

Iraj Arghand Lafmajani, Pejman Rezaei. A novel frequency-selective metamaterial to improve helix antenna. Front. Inform. Technol. Electron. Eng., 2012, 13(5): 365-375.

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http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C1100239    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2012/V13/I5/365

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