标题: | 利用双隙孔天线阵列设计之平面回波反射板的理论与量测 Theory and Measurement of a Planar Retrodirective Array Reflector Using Dual Slot Antennas |
作者: | 胡俊书 Hu, Chun-Shu 钟世忠 Chung Shyh-Jong 电信工程研究所 |
关键字: | 回向性;反射板;双隙孔天线;retrodirective;reflector;dual slot antennas |
公开日期: | 1996 |
摘要: | 一个利用Van Atta 回波天线阵列设计的宽回应角平面反射板, 在汽车 防撞系统的应用上占有重要的地位.□这个反射板上包含了许多经过适当 安排的双隙孔型天线, 这些天线由微波基板背面的微带线来馈入.□天线 的结构参数由无限长导线馈入之单隙孔型天线配合传输线分析得到.□这 些先前算出的结构参数当做双隙孔天线结构的初始值, 则正确的天线结构 尺寸可由积分方程与动差法解得.□从回波天线阵列所得之回波散射场包 含了从成对天线的再发射场, 等效隙孔型天线之感应电流的直接散射场与 金属板之散射场.□最后, 我们制造及量测了一个反射板, 其中包含了4组 阵列天线又每一组阵列天线有6个双隙孔型天线.□理论及量测的结果彼此 亦相当吻合.□ A planar reflector with a broad responding beamwidth, which has the potential in the applications of the automotive collision system, is designed using the Van Atta retrodirective antenna array. The arrayre flector contains several dual slot antennas appropriately fed and paired by microstrip lines on the back side of the substrate. By usinga mixed potential integral equation (MPIE) together with the method ofmoment, the structure parameters of the antenna are first determined byneglecting the air mutual coupling between the two slotsand by thetransmission line analysis. With these preliminary parameters as aninitial guess, the full-wave MPIE is then used to design the exact antenna dimensions. The total back-scattering field from the present retrodirective array is calculated by adding the reradiation fields from the paire dantennas, thescattering fields directly from the terminated antennas,and the scattering fieldfrom the ground plane. Finally, a reflector containing four antenna sub-arrays, each with six dual slot antennas,is fabricated and measured. Good agreement has been achieved betweenthe theoretical and measured results. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT850436040 http://hdl.handle.net/11536/62117 |
显示于类别: | Thesis |