Browsing by Author "Çolak, Şule"

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Multi-band polarization independent cylindrical metamaterial absorber and sensor application

Dinçer, Furkan; Karaaslan, Muharrem; Çolak, Şule; Tetik, Erkan; Akgöl, Oğuzhan; Altıntaş, Olcay; Sabah, Cumali (World Scientific Publishing Co. Pte Ltd, 2016)

A multi-band perfect metamaterial absorber (MA) based on a cylindrical waveguide with polarization independency is numerically presented and investigated in detail. The proposed absorber has a very simple configuration, ...
Optimizing the Gain and Directivity of a Microstrip Antenna with Metamaterial Structures by Using Artificial Neural Network Approach

Sağık, Metin; Altıntaş, Olcay; Ünal, Emin; Özdemir, Ersin; Demirci, Mustafa; Çolak, Şule; Karaaslan, Muharrem (Springer, 2021)

The purpose of this study is to improve the gain and directivity of the microstrip patch antenna by means of metamaterial (MTM) structures. As it is known, antennas have power densities in a certain direction, and the ...
Tunable left-hand characteristics in multi-nested square-split-ring enabled metamaterials

Abdulkarim, Yadgar. I.; Deng, Lian-wen; Yang, Jun-liang; Çolak, Şule; Karaaslan, Muharrem; Huang, Sheng-xiang; He, Long-hui; Luo, Heng (Central South University of Technology, 2020)

Left-hand materials have drawn increasing attention from many disciplines and found widespread application, especially in microwave engineering. A sandwiched metamaterial consisting of multi-nested square-split-ring ...