| Left-handed material (LHM) is a kind of artificial synthesis materials withnegative permittivity and negative permeability. The electric field E, the magneticfield H and the wave vector K in it comply with the left hand rule. It causedwidespread attention in the academic and engineering field due to some singularcharacteristics. Since the first artificial left-handed materials was produced by Smithand Pendry in2000, more and more scientific research institution dedicated to thefield of study and achieved many results.60GHz wireless communication has the advantages of wide frequency band, hightransmission rate, free license and strong anti-interference capability. Thus, itbecomes a hot topic of current research. In this paper, S-typed LHM structure isselected by comparison with various LHM structures and is applied in the60GHzcommunication through the theory analysis and the design improvement. In this paper,various structure parameters are fine-tuned and analyzed. The impact of the sizechange for S structure characteristics is summarized. Finally, a resonant unit ofS-typed structure for60GHz wireless communication is obtained. The simulationresults show that a wide left-handed band with5.8GHz (57.3-63.3GHz) is obtainedwhere the scattering parameters S21and S11are ideal. In theory, two resonantfrequencies will appear when upper and lower rings of S-typed structure areasymmetry which can realize the multi pass-band objective. Therefore, in this paper,double left-handed pass-band is achieved by changing S-typed structure unit size andthe cascaded approach.With the development of60GHz wireless communication, conventionalright-handed materials show more and more problems while the left hand material canshow its advantages. In this paper, the S-typed LHM structure is applied into the60GHz wireless communication for the first time which can provide some theoreticalbasis and simulation data reference for the next generation wireless communicationtechnology. |
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