大型共形天线阵列的仿真计算
详细信息 查看官网全文
- 英文论文题名：Accurate Computation of Electrically Large Conformal Antenna Array
- 论文作者：王永 ; 王永乐 ; 张玉 ; 史小卫 ; 赵勋旺
- 英文论文作者：WANG Yong ; WANG Yong-le ; ZHANG Yu ; SHI Xiao-wei ; ZHAO Xun-wang ; Key Lab.of Antennas and Microwave Technology ; Xidian Univ.
- 年：2016
- 作者机构：西安电子科技大学天线与微波技术重点实验室;
- 论文关键词：矩量法 ; 共形天线阵 ; 耦合 ; 单元因子 ; 本征解
- 英文论文关键词：MoM ; conformal antenna array ; coupling ; matched load ; parallel algorithm
- 会议召开时间：2016-08-17
- 会议录名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议论文集
- 语种：中文
- 分类号：TN820.15
- 学会代码：WBXB
- 会议名称：2016年全国军事微波、太赫兹、电磁兼容技术学术会议
- 会议地点：中国陕西西安
- 主办单位：中国电子学会微波分会、天线与微波技术重点实验室
- 学会名称：《微波学报》编辑部
- 页数：4
- 文件大小：575k
- 原文格式：D
- 会议级别：全国
摘要
分析设计大型阵列天线阵问题时,由于计算量巨大,很难实现全波方法如矩量法的整体仿真计算。而传统的方向图乘积定理无法考虑阵列单元间的耦合作用,所以无法保证计算的精度。针对这些问题,本文通过分析阵列单元间的耦合作用,提取出考虑耦合作用的单元因子作为阵列的本征解。在提取单元因子过程中,根据单元间耦合强度自适应选取需要考虑的耦合单元数。从而实现了在精度可控的前提下选取尽量少的单元数来减少计算量。分析共形阵列时,通过选择典型单元因子,根据阵面方向及位置进行旋转平移操作后加权组合出整个阵列的方向图。最后采用该方法分析了一个大型圆柱共形阵列天线的辐射特性。
When calculating the radiation problem of electrically large conformal antennas array, it is difficult to use the full wave method, such as method of moment, since the large amount of computations. The traditional pattern multiplication method cannot take the coupling between units into account. Therefore, its accuracy is incredible in many situations. To deal with these problems, this paper extracted the unit factors with coupling by analyzing the coupling between nearby units. All the unit factors form the eigensolutions of the antenna array. During extracting the unit factor, the number of coupling units is chosen by the degree of coupling adaptively. It helps to use the least units to calculate the eigensolutions without losing accuracy. When calculating the radiation pattern of conformal array, the corresponding units are chosen and translated according to the structure of array. The radiation pattern can be obtained by weighting the eigensolutions. Finally, a cylindrical conformal antenna array is analyzed using this method.
When calculating the radiation problem of electrically large conformal antennas array, it is difficult to use the full wave method, such as method of moment, since the large amount of computations. The traditional pattern multiplication method cannot take the coupling between units into account. Therefore, its accuracy is incredible in many situations. To deal with these problems, this paper extracted the unit factors with coupling by analyzing the coupling between nearby units. All the unit factors form the eigensolutions of the antenna array. During extracting the unit factor, the number of coupling units is chosen by the degree of coupling adaptively. It helps to use the least units to calculate the eigensolutions without losing accuracy. When calculating the radiation pattern of conformal array, the corresponding units are chosen and translated according to the structure of array. The radiation pattern can be obtained by weighting the eigensolutions. Finally, a cylindrical conformal antenna array is analyzed using this method.
引文
[1]R F Harrington.Field Computations by Moment Methods[M].New York:MacM illan,1968
[2]Zhang Y,Lin Z,Zhao X,et al.Performance of a Massively Parallel Higher-Order Method of Moments Code Using Thousands of CPUs and Its Applications[J]Antennas and Propagation,IEEE Transactions on,201462(12):6317-6324
[3]张帅,龚书喜,姜文.一种考虑互耦计算大型阵列天线辐射和散射场的新方法[J].电子学报,2011,39(9):2142-2147Zhang Shuai,Gong Shu-xi,Jiang Wen.A Novel Method for Calculating the Radiation and Scattering Patterns of Large Finite Arrays Including Mutual Coupling Effects[J].Acta Electronica Sinica,2011,39(9)2142-2147
[4]张帅,龚书喜,关莹,龚琦.大型平面阵列天线辐射方向图的小阵外推计算和综合方法[J].计算物理,2011,28(7):554-560Zhang Shuai,Gong Shu-xi,Guan Ying,Gong Qi.Extrapolative Method in Pattern Calculation and Synthesis of Large Plane Arrays[J].Chinese Journal of Computational Physics,2011,28(7):554-560
[5]Smida A,Azizi M K,Ghayoula R,et al.Synthesis of phase of conformal cylindrical arc antenna arrays referring to taguchi method[A].2014 International Conference on Multi-media Computing and Systems(ICMCS)[C],IEEE,2014:1333-1337
[6]Yu Zhang,Tapan K.Sarkar.Parallel Solution of Integral Equation Based EM Problems in the Frequency Domain[M].Hoboken,NJ:Wiley-IEEE Press,2009
[2]Zhang Y,Lin Z,Zhao X,et al.Performance of a Massively Parallel Higher-Order Method of Moments Code Using Thousands of CPUs and Its Applications[J]Antennas and Propagation,IEEE Transactions on,201462(12):6317-6324
[3]张帅,龚书喜,姜文.一种考虑互耦计算大型阵列天线辐射和散射场的新方法[J].电子学报,2011,39(9):2142-2147Zhang Shuai,Gong Shu-xi,Jiang Wen.A Novel Method for Calculating the Radiation and Scattering Patterns of Large Finite Arrays Including Mutual Coupling Effects[J].Acta Electronica Sinica,2011,39(9)2142-2147
[4]张帅,龚书喜,关莹,龚琦.大型平面阵列天线辐射方向图的小阵外推计算和综合方法[J].计算物理,2011,28(7):554-560Zhang Shuai,Gong Shu-xi,Guan Ying,Gong Qi.Extrapolative Method in Pattern Calculation and Synthesis of Large Plane Arrays[J].Chinese Journal of Computational Physics,2011,28(7):554-560
[5]Smida A,Azizi M K,Ghayoula R,et al.Synthesis of phase of conformal cylindrical arc antenna arrays referring to taguchi method[A].2014 International Conference on Multi-media Computing and Systems(ICMCS)[C],IEEE,2014:1333-1337
[6]Yu Zhang,Tapan K.Sarkar.Parallel Solution of Integral Equation Based EM Problems in the Frequency Domain[M].Hoboken,NJ:Wiley-IEEE Press,2009