TRANSMITARRAY USING PERFORATED DIELECTRIC MATERIAL FOR WIDEBAND APPLICATIONS | Zendy

S.H. Zainud-Deen | Zendy; Shaymaa M. Gaber | Zendy; K. H. Awadalla | Zendy

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TRANSMITARRAY USING PERFORATED DIELECTRIC MATERIAL FOR WIDEBAND APPLICATIONS

Author(s) -

S.H. Zainud-Deen,

Shaymaa M. Gaber,

K. H. Awadalla

Publication year - 2012

Publication title -

progress in electromagnetics research m

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 31

ISSN - 1937-8726

DOI - 10.2528/pierm12020110

Subject(s) - wideband , dielectric , optics , aperture (computer memory) , materials science , side lobe , bandwidth (computing) , transmission (telecommunications) , transmission line , optoelectronics , telecommunications , acoustics , physics , computer science , antenna (radio)

In this paper, linearly polarized transmitarray is investi- gated as to avoid the usage of multi-layers for improving the bandwidth of transmitarray. The transmitarray is formed from a single dielectric sheet by perforating selected areas of the material. A perforated dielec- tric layer is divided into square cell elements. Each cell has four holes with the same diameters. Holes with difierent diameters in the cell el- ements are used to allow continuous tuning of the transmitted signal's phase over 360 - range with a maximum loss of 3.6dB at 10GHz. The transmission coe-cient versus the diameter of the holes is calculated by using the flnite integration technique. The results are compared with those calculated with transmission line method for veriflcation. 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 re∞ectarray with the same aperture area is illustrated.

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