Vol. 24

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2012-03-12

Transmitarray Using Perforated Dielectric Material for Wideband Applications

By Saber Zainud-Deen, Shaymaa. M. Gaber, and Kamal Awadalla
Progress In Electromagnetics Research M, Vol. 24, 1-13, 2012
doi:10.2528/PIERM12020110

Abstract

In this paper, linearly polarized transmitarray is investigated as to avoid the usage of multilayers for improving the bandwidth of transmitarray. The transmitarray is formed from a single dielectric sheet by perforating selected areas of the material. A perforated dielectric layer is divided into square cell elements. Each cell has four holes with the same diameters. Holes with different diameters in the cell elements are used to allow continuous tuning of the transmitted signal's phase over 360o range with a maximum loss of 3.6 dB at 10 GHz. The transmission coefficient versus the diameter of the holes is calculated by using the finite integration technique. The results are compared with those calculated with transmission line method for verification. The focal-to-diameter ratio of the transmitarray is optimized for lower side lobe level and highest transmitarray gain. A comparison between the transmitarray and the reflectarray with the same aperture area is illustrated.

Citation


Saber Zainud-Deen, Shaymaa. M. Gaber, and Kamal Awadalla, "Transmitarray Using Perforated Dielectric Material for Wideband Applications," Progress In Electromagnetics Research M, Vol. 24, 1-13, 2012.
doi:10.2528/PIERM12020110
http://www.jpier.org/PIERM/pier.php?paper=12020110

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