Broadband impedance-matched near-zero-index metamaterials for a wide scanning phased array antenna design

作者：Liu, Yahong^*; Zhou, Xin; Zhu, Zhennan; Zhao, Xiaopeng

来源：Journal of Physics D: Applied Physics , 2016, 49(7): 075107.

DOI：10.1088/0022-3727/49/7/075107

• near-zero-index metamaterials
• broadband
• phased array antenna
• radiation
• grating lobe

We present broadband near-zero-index metamaterials composed of dielectric resonators and metallic rods, whose permittivity epsilon and permeability mu are near-zero simultaneously. It is notable that the values of permittivity e are equal to those of permeability mu over a broadband frequency range of 8.45 GHz to 10.5 GHz, indicating the impedances of the proposed near-zero-index metamaterials match vacuum in this broadband. The broadband near-zero-index metamaterials for manipulating radiation sources are analyzed. We also demonstrate numerically that such near-zero-index metamaterials can offer a unique grating condition in a phased array antenna, with the beam scanning angle range beyond the critical angle limit of the grating lobe.

• 出版日期2016-2-25
• 单位西北工业大学