Far-field high-resolution imaging of conducting obstacles using metamaterial-lined aperture arrays

机译：使用超材料衬里的孔径阵列对障碍物进行远场高分辨率成像

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This work offers a new mechanism for far-field high-resolution imaging based on illumination by a one-dimensional array of subwavelength resonant apertures lined using epsilon-negative and near-zero (ENNZ) metamaterials. Each aperture in the array exhibits a fano-like transmission resonance-antiresonance profile, and the resonance frequencies of adjacent apertures are adjusted so that the resonance of one lies within the antiresonance of the other, to ensure strong isolation. This approach enables each resonance peak to be uniquely associated with one location in space. We show that blocking an aperture using a conducting disk suppresses the corresponding resonance frequency, enabling far-field imaging of a distribution of obstacles with a spatial resolution of better than λ/6.

机译：这项工作为基于远波长高分辨率成像的新机制提供了一种新的机制，该成像是通过使用ε负和接近零（ENNZ）超材料排列的一维亚波长谐振孔的一维阵列进行照明的。阵列中的每个孔都呈现出类似扇形的传输共振-反共振曲线，并且调整相邻孔的共振频率，以使一个共振位于另一个共振内，以确保强隔离。这种方法使每个共振峰都可以与空间中的一个位置唯一关联。我们表明，使用导电盘阻挡光圈会抑制相应的共振频率，从而能够以比λ/ 6更好的空间分辨率对障碍物的分布进行远场成像。

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来源
《2016 IEEE International Symposium on Antennas and Propagation》|2016年|667-668|共2页
会议地点 Fajardo(PR)
作者
Elham Baladi; Ashwin K. Iyer;
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作者单位

Electrical and Computer Engineering Department, University of Alberta, Edmonton, AB, Canada;

Electrical and Computer Engineering Department, University of Alberta, Edmonton, AB, Canada;

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原文格式 PDF
正文语种 eng
中图分类
关键词
Apertures; Resonant frequency; Imaging; Metamaterials; Spatial resolution; Two dimensional displays; High-resolution imaging;

机译：孔径;共振频率;成像;超材料;空间分辨率;二维显示;高分辨率成像;

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2. Inversion of penetrable obstacles from far-field data on narrow angular apertures [J] . J. A. Warner, D. N. Ghosh Roy, J. Bucaro The Journal of the Acoustical Society of America . 2000,第3期

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Far-field high-resolution imaging of conducting obstacles using metamaterial-lined aperture arrays

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