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Split-ring resonators (SRRs) and continuous metallic wires were used to realize double negative materials (DNGs). In this paper, we discuss two kinds of DNG structures with different periodic arrangement. One is the conventional model with air separation, and the other is the solid-state structure. Full-wave simulations are used to analyze the effective medium characteristics and the figure of merit...
Line drive bionic flexible robot is a new type of robot which is based on the biological organs, such as nasal, octopus, snakes and so on. It is according to the performance principle of Chinese traditional folk drama ‘shadow play’. Recent years, it is gradually becoming a new research hotspot. In this article, it emphatically describes how to design this kind of robot and the relevant kinematics...
The time-domain response is analyzed by precise integration method in condition of non-uniform coupled transmission lines in this paper. Different to the traditional method, this method directly analyzes it according to the non-uniformity of non-uniform transmission lines so as to avoid decoupling the coupled telegraph equations. The accuracy and speed of the analysis are improved greatly. It is a...
In this paper, thin wire structure with different radius is studied by using method of moments (MoM) based on pulse basis function. An electromagnetic model is presented to analyse thin wire structure with different radius approximately. Numerical results based on the present model have better agreement with HFSS results, which show that this present model is effective for analysing thin wire antenna...
In the past decade, left-handed metamaterials (LHMs), which were first named and theoretically discussed by Veselago [1], have been extensively studied throughout the world. They are composed of arrays of split-ring resonators (SRRs) and wires [2], [3] which exhibit negative permittivity and permeability, respectively. The first LHM was constructed and experimentally demonstrated by Smith et al. in...
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