一种用于集成天线封装(AiP)的低剖面、低成本的毫米波微带天线设计

摘要

讨论了毫米波微带天线的工作原理、结构及其与射频前端的集成.介绍了基于CST STUDIO SUITE 2014软件设计中心频率为27 GHz微带天线的整个设计流程.设计了以Rogers 5880有机基板为介质材料的27 GHz毫米波微带天线,相对于以LTCC为介质的天线拥有低成本、低剖面的优点.提出一种毫米波微带天线与射频前端的集成方案,建立了天线与帯通滤波器仿真模型并提取S参数.论证毫米波微带天线与射频前端集成的可行性.所设计的微带天线尺寸只有3.8 mm×3.5 mm,天线的增益达到了7.62 dBi,辐射效率高达93%,相对带宽为2.3%,且实测值与仿真值吻合得很好,验证了设计的正确性.%The working principle and structure of millimeter-wave microstrip antenna and its integration with RF front-end are discussed. The whole design process of the microstrip antenna(whose center frequency is 27 GHz)based on CST STUDIO SUITE 2014 software is introduced. The millimeter-wave microstrip antenna working at 27 GHz was design,in which the Rogers 5880 organic substrate is utilized as the dielectric material. It has the advantages of low cost and low profile in comparison with the antenna taking LTCC as its dielectric. An integration scheme for millimeter-wave microstrip antenna and RF front-end is pre-sented. The simulation model of the antenna and band-pass filter(BPF)is established,and the S-parameter is extracted. The feasibility of the integration for millimeter-wave microstrip antenna and RF front-end is discussed. The size of the designed mi-crostrip antenna is only 3.8 mm×3.5 mm,the gain of the antenna can reach up to 7.62 dBi,the radiation efficiency can reach up to 93%,and the relative bandwidth is 2.3%. The measured results are in good agreement with the simulation values,which can verify the validity of the design.