每年出版 12 期
ISSN 打印: 0040-2508
ISSN 在线: 1943-6009
Indexed in
DEFECTIVE MODES IN AN ANISOTROPIC WIRE METAMATERIAL IN THE MICROWAVE RANGE
摘要
At present, considerable attention is focused at investigating defective modes that arise as a result of disturbance of the periodicity in photonic crystals. This interest is provoked by the fact that disturbances of periodicity in nature occur more frequently than the perfect periodicity. The available to date results of theoretical investigations of the defective modes in artificial media (metamaterials) do not provide a complete description of this effect. In the paper, the spectral properties of an anisotropic wire metamaterial with a spatial defect are analyzed within the microwave frequency range. Defective modes have been experimentally detected to exist in the forbidden zone of the transmission spectrum of the anisotropic wire metamaterial with a defect. The positions of the transmission peaks corresponding to appearance of defective modes are analyzed in dependence on the frequency and thickness of the defective layer. The measurement results have been found to be in good agreement with numerical calculations. It is shown that the peaks associated with the defective modes shift toward lower-frequency range as the defective layer thickness is increased. Results of the study can be used in designing various telecommunication devices, including filters, couplers, attenuators, electromagnetic sensors, lenses with sub-wavelength resolution, small-size antennas, objects that are "invisible" within a certain frequency range, etc.
-
Tarapov Sergey, Ivzhenko Liubov, Polevoy Sergey, Vakula Artur, Experimental Implementation of Non-uniformity Effects in Artificial Media : (Invited), 2019 IEEE 8th International Conference on Advanced Optoelectronics and Lasers (CAOL), 2019. Crossref