A New Wide-Band Double-Negative Metamaterial for C- and S-Band Applications.
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| Title: | A New Wide-Band Double-Negative Metamaterial for C- and S-Band Applications. |
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| Authors: | Hossain, Md Ikbal1 ikbal@siswa.ukm.edu.my, Faruque, Mohammad Rashed Iqbal1 rashed@ukm.edu.my, Islam, Mohammad Tariqul2 tariqul@ukm.edu.my, Ullah, Mohammad Habib3 mhullah@yahoo.com |
| Source: | Materials (1996-1944). 2015, Vol. 8 Issue 1, p57-71. 15p. 10 Diagrams, 6 Graphs. |
| Subjects: | Model-integrated computing, Electromechanical analogies, Computer simulation, Computer-aided design, Mathematical models |
| Abstract: | A new design and analysis of a wide-band double-negative metamaterial, considering a frequency range of 0.5 to 7 GHz, is presented in this paper. Four different unit cells with varying design parameters are analyzed to evaluate the effects of the unit-cell size on the resonance frequencies of the metamaterial. Moreover, open and interconnected 2 × 2 array structures of unit cells are analyzed. The finite-difference time-domain (FDTD) method, based on the Computer Simulation Technology (CST) Microwave Studio, is utilized in the majority of this investigation. The experimental portion of the study was performed in a semi-anechoic chamber. Good agreement is observed between the simulated and measured S parameters of the developed unit cell and array. The designed unit cell exhibits negative permittivity and permeability simultaneously at S-band (2.95 GHz to 4.00 GHz) microwave frequencies. In addition, the designed unit cell can also operate as a double-negative medium throughout the C band (4.00 GHz to 4.95 GHz and 5.00 GHz to 5.57 GHz). At a number of other frequencies, it exhibits a single negative value. The two array configurations cause a slight shift in the resonance frequencies of the metamaterial and hence lead to a slight shift of the single- and double-negative frequency ranges of the metamaterial. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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