【作者】 刘春生； 张彦； 李乾帅； 洪伟；

【Author】 Chunsheng Liu;Yan Zhang;Qianshuai Li;Wei Hong;School of Information Science and Engineering,State Key Laboratory of Millimeter Waves,Southeast University;

【机构】 东南大学信息科学与工程学院毫米波国家重点实验室；

【摘要】 针对毫米波无线通信,提出了一种低成本的基片集成缝隙天线及阵列的宽带化设计方法,克服了传统波导缝隙天线窄带的问题。所提出的基片集成天线采用串馈多条45°斜缝隙结构,并通过添加多级感性通孔进行阻抗匹配,从而在提升天线增益的同时显著的增大了天线带宽。对天线宽带化工作原理进行了系统分析,并给出了缝隙数量对天线带宽及增益的影响。最终,在Q波段对所设计的基片集成四缝隙天线进行了实验验证,实测带宽达到30.03%,最大增益为7.02 dBi。为了提升增益,还进一步设计了8单元天线阵列,在保持宽带同时,最大增益可达到17.66 dBi。更多还原

【Abstract】 Aiming to millimeter-wave communications,a low-cost wideband design method for the substrate-integrated slot antenna(SISA) and array is proposed to overcome the narrow band problem of conventional waveguide slot antennas.The proposed SISA is comprised of multiple series-fed 450 inclined slots,with multi inductive vias for impedance matching,so as to increasing the gain and evidently enhancing the bandwidth.The broadband operating scheme is througly analyzed,and the effect of slot number on antenna bandwidth and gain is given.Finally,the designed SISA with four-slot has been experimented at Q-band,and the measured bandwidth reaches 30.03%,accompanying a maximum gain of 7.02 dBi.To further increase the gain,an 8-element array has been desiged to achieve a higher gain of 17.66 dBi,maintaining the broad bandwidth as well.更多还原