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基于目前越来越复杂的通信要求，研制了一款具有滤波功能的超宽带MIMO天线。为实现天线单元的小型化，利用磁壁效应将天线切半，通过在辐射贴片上开λ/4开路谐振器实现双滤波，采用将天线单元旋转正交放置的方式实现单元间的极化隔离。依据设计结构进行了实物加工及测试，验证了该设计结构的正确性。天线的反射系数在2.9～11.5 GHz均小于-10 dB,且在该频带内ECC<0.03,在阻带范围内增益值下降明显，结构尺寸仅为40.0 mm×40.0 mm×0.8 mm。与现有研究成果相比，该结构具有优势。
Abstract：Based on the current increasingly complex communication requirements, an ultra-wideband MIMO antenna with filtering function is developed. In order to realize the miniaturization of the antenna unit, the magnetic wall effect is used to cut the antenna in half, double filtering is realized by opening a λ/4 open-circuit resonator on the radiation patch, and the polarization isolation between the units is realized by rotating the antenna unit and placing it orthogonally. According to the design structure, the physical processing and testing are carried out to verify the correctness of the design structure. The reflection coefficient of the antenna is less than-10 dB in the range of 2.9～11.5 GHz, and the ECC is less than 0.03 in this frequency band, the gain is reduced significantly within the stopband, and the structural size is only 40.0 mm×40.0 mm×0.8 mm. Compared with similar results reported publicly, this structure has advantages.
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基本信息:
DOI：
中图分类号:TN822.8
引用信息:
[1]李其强,韩晓,杨凯等.小型化滤波超宽带MIMO天线[J].无线电工程,2023,53(06):1409-1415.
基金信息:
中国博士后科学基金(2019M661052)~~