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In 1968, the idea of left-handed metamaterial (LHM) with simultaneously negative permittivity and permeability was conceived by Veselago. Although the LH property is no longer questioned, the performance including the bandwidth, loss and the unit cell size of the LHM are still calling for improvement. In view of this consideration, a C band planar LHM, in which the unit electrical cell size is 0.067...
This paper focuses on not only the isotropic chiral but also gyrotropic chiral materials with primary interest in dispersion, realization of double negative materials (DNG) and negative refractive index. To take into account the dispersion, the Condon model together with Tellegen's definition of chiral media is used for the frequency dependence of three parameters (permittivity, permeability and chirality)...
Here a miniaturized microstrip antenna is under consideration which is loaded by a pair of traditional double positive (DPS) substrate and practically dispersive double negative (DNG) substrate. This paper investigates the possibility and ability of microstrip antenna miniaturization with practically dispersive DNG medium. The practically dispersive DNG medium is synthesized based on the traditional...
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