加载多层介质谐振器的宽带背腔缝隙天线设计  

Design of wideband cavity-backed slot antenna with multi-layer dielectric resonator

作　　者：卢俊麒[1] 宋崇硕 吴雨晴[1] 何艳[1] 

机构地区：[1]国防科学技术大学,湖南长沙410072

出　　处：《电波科学学报》2014年第6期1110-1114,共5页Chinese Journal of Radio Science

摘　　要：提出并设计了一种工作于X波段的新型宽带背腔缝隙天线,通过在缝隙外侧加载多层介质谐振器,有效扩展了天线带宽并显著提高了天线增益.设计的天线中心频率为10 GHz,-10 dB回波损耗带宽约为40％;带内增益5～9.5 dBi,比未加载多层介质谐振器的背腔缝隙天线提高2～3 dB.实测结果同设计结果基本吻合,有效验证了该设计的正确性.A novel wideband cavity-backed slot antenna operating at X band is pro- posed. The band width and gain of the antenna are significantly increased by multi-layer dielectric resonator loading. The proposed antenna has a 40%-10 dB return loss band- width at a center frequency of 10 GHz and the gain wi（hin this band are 5～9.5 dBi which is 2～3 dB higher than those without the multi-layer dielectric resonator loading. The measurement results agree with simulations well thus demonstrates the design is correct and effective.

关 键 词：背腔缝隙天线 介质谐振天线 宽带 高增益 

分 类 号：TN802.1[电子电信—信息与通信工程]