宽带波导缝隙天线的研究与设计

张文涛; 杨晖

doi:10.15892/j.cnki.djzdxb.2011.02.006

2011 , Vol. 31 >Issue 2: 202 - 204

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2011.02.006

摘要

根据传输线方程推导了辐射缝隙有源导纳的计算公式,基于HFSS提取了波导缝隙天线阵列中辐射缝隙的有源导纳,通过Taylor分布幅度加权降低了副瓣,辐射缝隙与馈电网络采用过载技术实现了天线的宽带匹配。设计了一个11×12的单脉冲天线阵列,优化后仿真结果表明,采用该方法设计的天线在满足高增益、低副瓣的制导要求下,天线1.5以下的驻波带宽约为传统设计的2倍。

关键词： 传输线方程; 有源导纳; 过载技术; 宽带; 低副瓣

本文引用格式

张文涛 , 杨晖 . 宽带波导缝隙天线的研究与设计[J]. 弹箭与制导学报, 2011 , 31(2) : 202 -204 . DOI: 10.15892/j.cnki.djzdxb.2011.02.006

Abstract

The equation was derived from the transmission line gap active radiation admittance formula. Based on HFSS, the waveguide-slot antenna array in the slot of the active radiation admittance was extracted, the side lobe was reduced by Taylor distribution amplitude weighting, and the overload technology was adopted for radiating slot and the feed network for broadband antenna matching. An 11 × 12 single-pulse antenna array was designed. The optimized simulation results show that the designed antenna meets the guidance requirement of high gain and low side lobe, and the VSWR bandwidth of antenna 1.5 is about 2 times of that of traditional design.

Key words： transmission line equation; active admittance; overload technology; broadband; low sidelobe

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参考文献

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[3]	杨继松, 傅君眉. 波导缝隙在模拟阵列环境中的有源导纳值计算方法[J]. 中国空间科学技术, 1996 (6): 12-18.
[4]	齐美清, 汪伟, 金谋平. 基于 HFSS 的波导裂缝有源导纳的计算方法[J]. 雷达科学与技术, 2006, 4(2): 121-124.
[5]	顾卫军, 李俊沛. 裂缝线阵CAD[C]// 1991年天线年会论文集, 中国电子学会, 1991: 145-156.

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