Design and analysis of perfect metamaterial absorber in GHz and THz frequencies

Date

2015-12-12

Author

Dincer, Furkan
KARAASLAN, MUHARREM
Sabah, Cumali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

231
views

0
downloads

The new perfect metamaterial absorber (MA) based on square resonator with gap configuration is numerically (for GHz and THz frequency regime) and experimentally (for GHz frequency regime) presented and investigated. The proposed MA has a simple configuration which introduces flexibility to adjust its metamaterial properties and easily rescale the structure for other frequency regimes. In addition, polarization and incident angle independencies of the proposed model are analyzed for the THz frequency regime. The suggested structure could achieve very high absorption at wide angles of polarization and incident angles for both transverse electric and transverse magnetic waves. At resonance frequencies, absorption results are realized around 99.99% at 5.48GHz and 99.92% at 0.865THz for their respective frequency regimes. Besides numerical results in GHz and THz frequencies, experimental results are also obtained for GHz frequency regime. The proposed MA and its variations enable myriad potential applications in areas such as defense systems, communication, stealth technologies, and so on.

Subject Keywords

Metamaterials, Absorber, Perfect absorption, Square resonator, GHz, THz

URI

https://hdl.handle.net/11511/66630

Journal

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS

DOI

https://doi.org/10.1080/09205071.2015.1043030

Collections

Engineering, Article

Suggestions

OpenMETU
Core

Investigation of microwave metamaterial based on H-shaped resonator in a waveguide configuration and its sensor and absorber applications Sabah, Cumali; Taygur, Mehmet Mert; ZORAL, EMİNE YEŞİM (2015-04-13) A microwave metamaterial (MTM) based on H-shaped resonator in a waveguide configuration is introduced and investigated both numerically and experimentally for X-band frequencies. The proposed model is designed and fabricated on both sides of the substrate and exhibits strong magnetic resonance at around 10.5GHz. Additionally, it has very simple design which improves and simplifies the fabrication process. Besides, only one single slab is used in the simulation and experiment which provides a reduction in th...
Design and realization of broadband instantaneous frequency discriminator Pamuk, Gökhan; Yıldırım, Nevzat; Department of Electrical and Electronics Engineering (2010) n this thesis, RF sections of a multi tier instantaneous frequency measurement (IFM) receiver which can operate in 2 – 18 GHz frequency band is designed, simulated and partially realized. The designed structure uses one coarse tier, three medium tiers and one fine tier for frequency discrimination. A novel reflective phase shifting technique is developed which enables the design of very wideband phase shifters using stepped cascaded transmission lines. Compared to the classical phase shifters using coupled ...
Design and Analysis of a Perfect Metamaterial Absorber for Sub-Terahertz Frequencies Sabah, Cumali; Wellmann, Thorsten; Voss, Daniel; Zouaghi, Wissem; Roskos, Hartmut G. (2015-08-27) A new near-perfect metamaterial absorber (MA) consisting of a square resonator with gaps and cross-wire strips is presented for the sub-terahertz frequency range. A narrow-band response of the proposed MA provides near-perfect absorption (absorbance of 99.23%) at 0.6 THz. In addition, numerical simulations show that the suggested MA could achieve very high absorption over a wide range of angles of incidence at least for transverse magnetic (TM) waves. As a result, the suggested model can be used for numerou...
Design and implementation of all-SiC MPPT boost converter for grid connected photovoltaic systems Koç, Elif Tuğçe; Ermiş, Muammer; Department of Electrical and Electronics Engineering (2019) Output power generated by a photovoltaic array is prone to fluctuations during utilization due to varying solar irradiance exposure throughout the day and changes in cell temperature; therefore, maximum power point tracking is essential for overall system efficiency. For this purpose, DC-DC Maximum Power Point Tracker (MPPT) Converters are used in photovoltaic systems connected to the grid in order to extract the available power. SiC semiconductors are favorable new devices that enable greater power convers...
Design and implementation of variable frequency sine wave output buck-boost inverter Şener, Yunus; Ertan, Hulusi Bülent; Department of Electrical and Electronics Engineering (2016) Conventional inverters have pulse-width-modulated output with a fundamental component at the desired frequency and magnitude. These converters are usually buck type and therefore the DC link voltage limits the maximum 3-phase output voltage magnitude. As a consequence, in motor drive applications field weakening is essential after a certain frequency of operation, as it becomes impossible to preserve the rated flux level. In renewable energy applications similar problems arise. When the DC link voltage fall...

Citation Formats

F. Dincer, M. KARAASLAN, and C. Sabah, “Design and analysis of perfect metamaterial absorber in GHz and THz frequencies,” JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, pp. 2492–2500, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66630.