[1]檀雷,张剑,王文博,等.W波段低旁瓣波导缝隙行波阵天线[J].东南大学学报(自然科学版),2017,47(5):850-855.[doi:10.3969/j.issn.1001-0505.2017.05.002]
 Tan Lei,Zhang Jian,Wang Wenbo,et al.W-band slotted-waveguide travelling array antenna with low side lobe[J].Journal of Southeast University (Natural Science Edition),2017,47(5):850-855.[doi:10.3969/j.issn.1001-0505.2017.05.002]
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W波段低旁瓣波导缝隙行波阵天线()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第5期
页码:
850-855
栏目:
电磁场与微波技术
出版日期:
2017-09-20

文章信息/Info

Title:
W-band slotted-waveguide travelling array antenna with low side lobe
作者:
檀雷张剑王文博徐金平
东南大学毫米波国家重点实验室, 南京 210096
Author(s):
Tan Lei Zhang Jian Wang Wenbo Xu Jinping
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing210096, China
关键词:
波导缝隙天线 行波阵 低旁瓣 波束扫描 紧缩场
Keywords:
slotted-waveguide antenna traveling-wave array low side lobe beam scanning compact range
分类号:
TN823.24
DOI:
10.3969/j.issn.1001-0505.2017.05.002
摘要:
针对W波段波导缝隙天线加工难度高、加工后缝隙尺寸不易修改的问题,提出了一种改进型缝隙电导函数提取方法.首先,根据工艺可实现性,设定合理的波导辐射面壁厚和缝隙宽度;然后,应用HFSS软件计算出不同缝隙切入深度和缝隙倾斜角度的缝隙电导值;最后,利用Matlab软件拟合出电导函数曲线,并进行阶梯状的分段近似,以简化加工工艺复杂度.基于优化设计结果,加工出4套天线样品,采用紧缩场测试方法对天线进行辐射方向图测量.结果表明,在75~79 GHz的频带内,天线增益均大于23.5 dBi,E面3 dB波束宽度为1.2°,旁瓣电平低于-20 dB.当频率从75 GHz扫描至79 GHz时,E面3 dB波束覆盖范围为5.5°.4套天线的性能测试结果展现出较好的一致性,从而验证了设计方法的正确性和有效性.
Abstract:
To solve the problem of the high processing difficulty of W-band slotted-waveguide antennas and the difficulty of modifying the gap size after processing, an improved method for extracting the conductance function of the slot is proposed.First,according to the process feasibility, the wall thickness of the waveguide and the width of the slot are reasonably pre-determined. Then,the HFSS software is employed to calculate the conductances of the slots with different cutting depths and inclination angles.Finally,the conductance function curve is drawn by the Matlab soft, and the piecewise approximation is performed to simplify machining complexity. Based on the optimized design results, four sets of antennas are fabricated and tested by the compact range measurement method in an anechoic chamber.The results show that in the frequency coverage from 75 to 79 GHz, the gain of the slotted waveguide antenna is higher than 23.5 dBi, and in E-plane the 3 dB beam width and the side lobe level are 1.2° and -20 dB, respectively. The 3 dB beam scanning range in E-plane is 5.5° when the frequency sweeps from 75 to 79 GHz. The measured performances of the four sets of antennas agree well with each other, which verifies the correctness and the effectiveness of the proposed method.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2017-04-01.
作者简介: 檀雷(1986—),男,博士生;徐金平(联系人),男,博士,教授,博士生导师,jpxu@seu.edu.cn.
引用本文: 檀雷,张剑,王文博,等.W波段低旁瓣波导缝隙行波阵天线[J].东南大学学报(自然科学版),2017,47(5):850-855. DOI:10.3969/j.issn.1001-0505.2017.05.002.
更新日期/Last Update: 2017-09-20