小型化前倾毫米波双狭缝天线的设计与制作  

Design and Fabrication of Miniaturized Forward Millimeter Wave Dual-slit Antenna

作　　者：周健[1] 赵敏 孙芸[1] 伍滨和 孙晓玮[1] ZHOU Jian;ZHAO Min;SUN Yun;WU Bin-he;SUN Xiao-wei(Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;College of Science,Donghua University,Shanghai 201620,China)

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]东华大学理学院,上海201620

出　　处：《红外》2019年第10期20-25,共6页Infrared

基　　金：中科院联合基金(6141A01100101)

摘　　要：常规侧向探测天线主波束垂直于天线辐射面,会导致飞行探测漏报率高,因此有必要研究具有前倾探测功能的天线,以提高探测准确率。基于HFSS软件,设计了狭缝天线结构。设计的输入参数如下:频段为36.85~37.15 GHz,收发隔离度优于50 dB,前倾角为20°~24°,旁瓣抑制度要求大于-10 dB,天线长度小于85 mm,方位角大于80°,俯仰角小于11°,增益大于11 dB。测试结果表明,天线增益为12 dB,在36.85~37.15 GHz条件下,方位角位于116°~134°之间,俯仰角位于8°~9°之间,前倾角在22°~24°之间,旁瓣抑制度位于-11.45^-14.60 dB之间,且波束方向可控。在36.5~37.5 GHz频率范围内,驻波比保持在1.413以下,收发隔离度保持在-51.132以下,天线总长度为83 mm。该天线的测试结果与设计一致,能满足设计要求,为无人机侧向探测器提供天线技术支撑。The main beam of the conventional lateral detection antenna is perpendicular to the radiation surface of the antenna, which will result in a high false detection rate of flight detection. Therefore, it is necessary to study the antenna with forward tilt detection function in order to improve the detection accuracy. Based on HFSS software, a slit antenna structure was designed. The input parameters of the design were in the frequency band 36.85-37.15 GHz, the isolation between transmitter and receiver was better than 50 dB, the forward inclination angle was 20°-24°, the side lobe suppression was more than-10 dB, the antenna length was less than 85 mm, the azimuth angle was more than 80°, and the horizontal angle was less than 11°, the gain was more than 11 dB. The test results show that the gain is 12 dB. Under the condition of 36.85-37.15 GHz, the azimuth angle is between 116°-134°, the pitch angle is between 8°-9°, the forward tilt angle is between 22°-24°, the side lobe suppression is ranged from-11.45 dB to-14.60 dB, and the beam direction is controllable. In the frequency range of 36.5-37.5 GHz, the standing wave ratio(SWR)is kept below 1.413, the isolation between transceiver and receiver is kept below-51.132, and the total antenna length is 83 mm. The test results are consistent with the design, which can meet the design requirements, and provide antenna technical support for the UAV′s lateral detector.

关 键 词：缝隙天线 前倾探测 毫米波 小型化 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置] O44[自动化与计算机技术—控制科学与工程]