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将弧形微带线、圆形开口谐振环和方型DGS(Defected Ground Structure)组建了一种平面微带型超介质单元,该单元在微波频段内具有等效介电常数和等效磁导率均小于0的特性。同时在双层贴片与接地板之间利用短路针加载技术,设计了一种结构简单的普通微带天线。MATLAB和HFSS软件仿真结果表明,设计的平面型超介质单元在1~10 GHz频段内具有多个等效介电常数和等效磁导率均小于0的频段。将由超介质单元构成的覆层加载到天线辐射贴片前方,构建一种工作频段完全覆盖1.92~1.98 GHz,2.11~2.17 GHz的LTE(Long Term Evolution)超介质天线。仿真结果表明,加载超介质覆层后微带天线的工作频段分别扩展为1.91~2.05 GHz、2.09~2.19 GHz频段,增益也提高了至少2 dB。
An arcuate microstrip line, a circular open-ended resonant ring and a square-shaped DGS (Defected Ground Structure) were used to construct a planar microstrip-typed metamaterial cell with equivalent permittivity and equivalent permeability in the microwave frequency band Rate of less than 0% of the characteristics. At the same time, a short microstrip antenna with a simple structure is designed by using the short-circuit pin loading technology between the double-layer chip and the ground plate. The simulation results of MATLAB and HFSS software show that the designed planar supercell units have multiple equivalent dielectric constant and equivalent permeability less than 0 in the frequency band of 1 ~ 10 GHz. A coating composed of an ultramicro dielectric unit is loaded in front of the antenna radiating patch to construct a long term evolution (LTE) overlay antenna with an operating frequency band covering 1.92-1.98 GHz and 2.11-2.17 GHz. The simulation results show that the operating frequency band of the microstrip antenna is extended to 1.91 ~ 2.05 GHz and 2.09 ~ 2.19 GHz after the super-dielectric cladding is loaded, and the gain is also increased by at least 2 dB.