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|3D-metamaterial Structures and Transmission-line Metamaterials: Microwave to Terahertz Applications|
|Keywords: 3D metamaterials, metamaterial transmission lines, tunability|
|Electromagnetic metamaterials (MTMs) are the artificial media exhibiting negative values of effective permittivity and/or permeability. MTMs have been recently employed to design novel electromagnetic devices for almost the whole spectrum range: from microwaves through terahertz frequencies to optics. The results of development and investigation of different kinds of MTM structures including an isotropic fully-dielectric double-negative microwave MTM and tunable MTMs for terahertz application are presented in the paper. Beside the 3D MTM structures, design of microwave devices with improved performance and enhanced functionality based on so-called left-handed transmission lines (LH TLs) and composite right/left-handed transmission lines (CRLH TLs) that are known as one-dimensional MTMs is also considered. Designs, simulated and measured characteristics of single- and dual-band microwave filters including tunable and ultra-wideband ones are presented. The devices are fabricated using multilayer integrated circuits technologies i.e. the low temperature co-fired ceramics (LTCC) technology and the liquid crystal polymer (LCP) technology that are very suitable for the implementation of metamaterial transmission lines.|
|Dmitry Kholodnyak, Associate Professor
St. Petersburg Electrotechnical University