2019
DOI: 10.1109/access.2019.2915263
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Applying Deep Learning Approach to the Far-Field Subwavelength Imaging Based on Near-Field Resonant Metalens at Microwave Frequencies

Abstract: In this paper, we utilize the deep learning approach for the subwavelength imaging in far-field, which is realized by the near-field resonant metalens at microwave frequencies. The resonating metalens consisting of split-ring resonators (SRRs) are equipped with the strong magnetic coupling ability and can convert evanescent waves into propagating waves using the localized resonant modes. The propagating waves in the far-field are utilized as the input of a trained deep convolutional neural network (CNN) to rea… Show more

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Cited by 33 publications
(17 citation statements)
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“…While designing the antenna structure, the simulation time could be reduced by replacing EM simulations with DL methodology [7][8]. Furthermore, to improve the antenna's performance, a DL approach has been studied for antenna pattern synthesis, fault diagnosis, and far-field imaging [9][10][11][12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%
“…While designing the antenna structure, the simulation time could be reduced by replacing EM simulations with DL methodology [7][8]. Furthermore, to improve the antenna's performance, a DL approach has been studied for antenna pattern synthesis, fault diagnosis, and far-field imaging [9][10][11][12][13][14][15][16].…”
Section: Introductionmentioning
confidence: 99%
“…Machine learning has become a popular subject in the computational electromagnetics (CEM) society as well. Researchers have proposed using machine learning to solve advanced CEM problems in device design [1]- [3], material characterization [4], geophysical prospecting [5], [6], and electromagnetic inversion [3], [5], [7]- [16], which attempts to estimate the distribution of physical properties in a domain of interest from antenna measurements collected outside of that domain. Since the inversion problems are nonlinear, nonunique, and ill-posed [17], [18], electromagnetic inversion has been one of the most challenging subjects studied by the CEM society over the past decades.…”
Section: Introductionmentioning
confidence: 99%
“…Recently, machine learning has been applied to optimize antenna performance [13][14][15][16][17][18][19] and implement impedance matching [20][21][22]. A machine learning method can determine the element values without requiring a mathematical description of the matching circuit.…”
Section: Introductionmentioning
confidence: 99%