A New Wide-Band Double-Negative Metamaterial for C- and S-Band Applications

作者：Hossain Md Ikbal^*; Faruque Mohammad Rashed Iqbal; Islam Mohammad Tariqul; Ullah Mohammad Habib

来源：Materials, 2015, 8(1): 57-71.

DOI：10.3390/ma8010057

• C-band
• finite-difference time-domain (FDTD) method
• double-negative (DNG) metamaterial
• metamaterial unit-cell
• metamaterial array
• S-band

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 x 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.

• 出版日期2015-1