Analysis of Multi-Groove Circular Radiators with Moment Method
-
摘要: 利用矩量法和几何绕射理论(GTD)分析计算多杯多模圆形辐射器的辐射场.辐射器中心波导为圆波导,由TE11模激励,带有若干个同轴杯.首先利用等效原理和矩量法计算嵌在无限大金属板上圆形辐射器的等效磁流分布,允许各波导区域中有任意多个高次模式存在,利用傅里叶变换法求得其辐射方向图,然后把该辐射场作为有限圆形接地板边缘的入射场,利用GTD计算圆接地板边缘对辐射器方向图的贡献.具体分析了三杯圆形辐射器的方向图,计算结果与实验结果吻合良好.Abstract: The method of moments was employed, in conjunction with the equivalent-source technique and the modal expansion theory, to analyze multi-groove and multi-mode circular radiators. No restriction was imposed on the number, width and depth of grooves, so the theoretical method and the analytical formulation are applicable to the analysis and design of wide-ranging coaxial grooved radiators. The problem of radiation from a multi-groove and multi-mode circular radiator embedded in an infinite ground plane was solved first. Then, expressions representing the elevation-plane patterns of the radiator embedded in a finite ground plane was derived using Geometrical Theory of Diffraction(GTD). The expressions for the field pattern were obtained by superposing the infinite ground plane solutions, the first-order diffracted field solutions and the axial caustic solutions in their respective regions of validity. The calculation results are in agreement with experiment measurements.
-
[1] 吴志忠,曹 伟.多槽多模同轴辐射器的矩量法分析[J]. 电子学报,1995,23(9):78~81. [2] Papathomas C J,Collin R E. Multi-mode analysis of a two coaxial cup prime focus feed with an infinite flange[J]. Electromagnetics,1989,(9):281~311. [3] 吕善伟.微波工程基础[M]. 北京:北京航空航天大学出版社,1995. 301~336. [4] 汪茂光.几何绕射理论[M]. 西安:西安电子科技大学出版社,1985. 55~60. [5] 高文军,吕善伟.有限平面上圆口径辐射场的数值分析[J]. 北京航空航天大学学报,2000,26(5):505~508. 期刊类型引用(5)
1. 李敬强,房秋,樊天辰,马龙. 面部三维生理特征点在睡眠剥夺中的疲劳检测. 北京航空航天大学学报. 2024(09): 2753-2762 . 本站查看
2. 刘亚威,孙延杰,郭恒瑜,冯禹扬,郭昕曜. 管制员疲劳国内外研究综述与展望. 山东航空学院学报. 2024(04): 107-114 . 百度学术
3. 赵小平,闵忠兵,薛运强,莫振龙,张姝玮,龚俊,喻佳. 新手驾驶人疲劳状态下的视觉特性研究. 重庆理工大学学报(自然科学). 2023(01): 149-157 . 百度学术
4. 李一帆,颜玢玢,王鹏,陈铎,王葵如,桑新柱,赵思铭. 基于多种眼动行为的裸眼3D显示视觉疲劳评估方法. 液晶与显示. 2023(06): 809-818 . 百度学术
5. 尚凯,罗婧,王震亚. 基于瞳孔检测的座椅舒适度评价. 林业工程学报. 2019(02): 152-157 . 百度学术
其他类型引用(8)
-

计量
- 文章访问数: 2581
- HTML全文浏览量: 67
- PDF下载量: 856
- 被引次数: 13