Sub-wavelength UWB antenna array with fractal slots and split ring resonators for time reversal super-resolution focusing

Changxing Yang,Min Zhu,Cheng Zhou,Deshuang Zhao

Communication Problem-Solving（2014）

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摘要

Time reversal (TR) is a useful method that can focus electromagnetic waves precisely at the desired point in both time and space. In this paper, we find that properly designed and distributed micro-scatterers in the near-field zone of antenna array contribute to overcoming the diffraction limit. By directly integrating micro-structured fractal slots (FS) and split ring resonators (SRR) into each antenna element, a novel and linear array of CPW-fed UWB antennas is proposed to focus TR waves with a spatial super-resolution, in which the spacing between adjacent elements is 1/12 wavelength. With small dimensions of 29*43*32 mm3 and wide impedance bandwidth of 2.35GHz-11.5GHz, this proposed array is attractive for TR-UWB-MIMO communication applications.

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关键词

mimo communication,uhf antennas,antenna radiation patterns,coplanar waveguides,fractals,linear antenna arrays,microwave antenna arrays,microwave resonators,ultra wideband antennas,cpw-fed uwb antennas,srr,tr waves,tr-uwb-mimo communication applications,antenna array,diffraction limit,electromagnetic waves,frequency 2.35 ghz to 11.5 ghz,linear array,micro-scatterers,microstructured fractal slots,near-field zone,split ring resonators,time reversal,spatial resolution

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