一种新型Ka频段圆极化微带天线设计  

Design of a Novel Ka-band Circular Polarization Microstrip Antenna

作　　者：刘洋[1] 王昕[1] 董涛[1] 

机构地区：[1]北京卫星信息工程研究所,北京100086

出　　处：《无线电工程》2012年第5期40-41,56,共3页Radio Engineering

摘　　要：提出了一种Ka频段圆极化微带天线的新设计,采用缝隙耦合馈电方式,通过在接地板开L型缝隙实现天线的圆极化工作。对天线阵列进行了仿真优化和加工实测,仿真和测试结果表明了设计的可行性。天线仿真和实测的相对阻抗带宽分别为3.9%和4.2%,仿真和实测的轴比相对带宽分别为2%和3.5%。天线具有良好的圆极化特性,可应用在卫星通信中。A novel Ka band circular-polarization microstrip antenna is proposed.The antenna is coupled-fed by L-shaped apertures in the ground plane to realize circular-polarization.The antenna array is analyzed and optimized,then the array is made and measured.Simulated and measured results show the feasibility of the proposed design.Simulated results of the relative impedance bandwidth and axial-ratio bandwidth are 3.9% and 2% respectively,and measured results are 4.2% and 3.5%.With good circular polarization performance,the antenna can be used in satellite communication.

关 键 词：微带天线 L型缝隙 耦合馈电 圆极化 

分 类 号：TN82[电子电信—信息与通信工程]