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Title: ACES Express Journal April 2018 Cover
File Type: Express Journal Paper
Issue:Volume: 33      Number: 4      Year: 2018
Download Link:Click here to download PDF     File Size: 2168 KB

Title: ACES Express Journal April 2018 Front/Back Matter
File Type: Express Journal Paper
Issue:Volume: 33      Number: 4      Year: 2018
Download Link:Click here to download PDF     File Size: 597 KB

Title: ACES Express Journal April 2018 Full
File Type: Express Journal Paper
Issue:Volume: 33      Number: 4      Year: 2018
Download Link:Click here to download PDF     File Size: 2728 KB

Title: Experimental Characterization of an All-Dielectric Metasurface with Optical Activity Properties
Abstract: A new microwave all-dielectric metasurface based on elliptic dielectric resonators (EDRs) with optical activity properties was fabricated and characterized experimentally. The 5.12 mm-thick metasurface is composed of two layers of connected elliptic dielectric resonators (Rogers RO3210) with elliptic slots and was excited with two orthogonal polarizations of the incident electric field. The optical activity was studied through two constitutive parameters representing the rotation angle ? and polarization state (eta) of incident and transmitted electric fields through the metasurface. It is found that the proposed design may rotate the incident linearly polarized electric fields over many frequency bands with different transmissions levels. The obtained performances may offer to the device the possibility to be used as microwave polarization rotator.
Author(s): A. Yahyaoui, H. Rmili
File Type: Express Journal Paper
Issue:Volume: 33      Number: 4      Year: 2018
Download Link:Click here to download PDF     File Size: 0 KB

Title: A Direct Solver Based on Rank-Structured Matrix for Large Arrays in Method of Moment
Abstract: Rank-structured matrices such as H-matrix, H2-matrix and hierarchically semi-separable (HSS) have be applied to solve integral equation problems in some engineering applications. In Method of Moment (MoM), the discretization of electric field integral equation (EFIE) usually leads to a dense matrix. However, by considering the low-rank properties of off-diagonal blocks, the rank-structured theory provides a novel sparse representation for the resulting matrix. In this paper, we propose a direct solver based on one-level rank-structured matrix to analysis the electromagnetic characteristics of large arrays. The memory requirements are compared to those of direct solver and advantages of the proposed method are validated by numerical examples.
Author(s): W. Yu, H. Yang, S. Li, Y. Xu
File Type: Express Journal Paper
Issue:Volume: 33      Number: 4      Year: 2018
Download Link:Click here to download PDF     File Size: 0 KB