《17 毫米波圆极化介质复合波导缝隙阵列 天线的HFSS设计》.pdf

ANSYS 2011 中国用户大会优秀论文 毫米波圆极化介质复合波导缝隙阵列天线的 HFSS 设计 [闫丕贤 刘埇 吕昕] [北京理工大学信息与电子学院，北京 100081] [ 摘 要 ] 本文利用ANSYS HFSS设计了一种工作于毫米波段的介质复合波导缝隙天线阵列，在介质覆铜 板加工出缝隙并与波导槽复合形成辐射结构，利用HFSS 软件仿真并分析缝隙导纳，泰勒加权 实现阵列综合。设计平面和差网络实现天馈系统一体化，利用介质覆铜板加工出圆极化栅，并 利用HFSS对整体天线进行了仿真调试。仿真结果与实物测试结果基本一致，验证了软件仿真 的准确性和设计的可行性。该天线成本低、一致性高、圆极化性能好，同时可以改善传统波导 缝隙天线成品率低、成本高和工作带宽窄的缺点，并将工作频带展宽至700MHz。 [ 关键词 ] ANSYS HFSS ，毫米波，圆极化，波导缝隙天线 A Design of MMW Circular Polarization Dielectric Complex Waveguide Slot Array Antenna in HFSS [YAN Pixian, LIU Yong, LV Xin] [School of Information and Electronics, Beijing Institute of Technology, Beijing 100081] [ Abstract ] In this paper, a dielectric complex waveguide slot array antenna was studied by ANSYS HFSS, working in MMW-band. The radiating structure was formed by etching a slot in the copper which covered on the substrate composited with rectangular groove guide, then take a simulation and analysis of the slot admittance by software, combined with the array comprehension of HFSS. For the integration of antenna and feed network, compact structure was designed with a sum-difference network includes a flat magic T, and circular polarization grid machined with micro-strip substrate. Physical test results are basically consistent with the simulation results. The antenna offered advantages such as low cost, high consistency, circular polarization performance. It also improved the traditional waveguide slot antenna from low yield and high cost. [ Keyword ] ANSYS HFSS; MMW; circular polarization; waveguide slot array antenna 1 前言 作为一种常用毫米波天线，波导缝隙天线加工成本高、成品率低。基于印刷缝隙的介 质复合波导缝隙天