整流天线组阵等效模型与实验

摘要

文章将整流天线单元等效为一个直流源和负载的串联，以此提出整流天线串/并联组阵等效模型，得到整流天线的组阵形式及最佳负载与阵元个数之间的关系。利用所设计的低功率密度应用整流天线单元，用ADS软件仿真了二元并联阵，实验测试了二元串联阵与二元并联阵，其仿真与实验结果均与组阵模型基本吻合，从而验证了整流天线组阵模型的有效性。并且提出了多元组阵的可行性方案，为大规模阵列设计提供指导。%A rectenna is equivalent to a series circuit of a dc power and a load. Equivalent models of series and parallel of a rectenna arrays are proposed so the relationship of the optimum loads and the element numbers for the series and parallel rectenna arrays are obtained. Using a rectenna element with low power density applications,the two-element parallel array is analyzed with ADS software and the two-element arrays both in series and in parallel are measured. The results of ADS and measurements are approximately in accordance with the equivalent models of rectenna arrays,which validate the effectiveness of the equivalent models. Further more, suggestions are given for design large rectenna arrays.