高效率计算光滑平台上远距离天线间互耦算法

doi:10.12305/j.issn.1001-506X.2022.01.04

系统工程与电子技术 ›› 2022, Vol. 44 ›› Issue (1): 28-33.doi: 10.12305/j.issn.1001-506X.2022.01.04

高效率计算光滑平台上远距离天线间互耦算法

刘宏伟^1,*, 谢敏², 魏兵¹, 袁浩波³

1. 西安电子科技大学物理与光电工程学院, 陕西西安 710071
2. 西安电子工程研究所, 陕西西安 710100
3. 西安电子科技大学电子工程学院, 陕西西安 710071

收稿日期:2020-11-23 出版日期:2022-01-01 发布日期:2022-01-19
通讯作者: 刘宏伟
作者简介:刘宏伟(1995—), 男, 博士研究生, 主要研究方向为电磁场高频算法、天线测量|谢敏(1991—), 女, 工程师, 硕士, 主要研究方向为微波器件|魏兵(1970—), 男, 教授, 博士, 主要研究方向为电磁理论、计算电磁学|袁浩波(1980—), 男, 副教授, 博士, 主要研究方向为微波测量与微波成像、计算电磁学
基金资助:
国家自然科学基金(61901324);电波环境特性及模块化技术国防科技重点实验室基金(201903002);陕西省自然科学基础计划(2021JM-129)

Efficient algorithm to compute the coupling between long-distance antennas mounted on a smooth platform

Hongwei LIU^1,*, Min XIE², Bing WEI¹, Haobo YUAN³

1. School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
2. Xi'an Electronic Engineering Research Institute, Xi'an 710100, China
3. School of Electronic Engineering, Xidian University, Xi'an 710071, China

Received:2020-11-23 Online:2022-01-01 Published:2022-01-19
Contact: Hongwei LIU

摘要/Abstract

摘要：

为了高效率地分析光滑平台上两天线间的互耦, 提出了一种计算S参数的快速算法。该方法首先通过球谐变换(spherical harmonic transformation, SHT)展开单个天线的辐射场, 然后采用一致性几何绕射理论(uniform theory of diffraction, UTD)分析平台的散射场, 最后通过互易定理的反应积分得到两天线间的S参数。该方法只需要对每个天线单独进行一次测量或者仿真, 此后当两个天线在平台上随意旋转时, 都可以高效率地求出两者之间的互耦。数值实验的结果表明, 所提方法与商业软件FEKO中的矩量法/UTD混合算法的精度相当, 但是前者的速度比后者更快。

关键词: S参数, 互易定理, 球谐变换, 一致性几何绕射理论

Abstract:

In order to analyze the coupling between antennas mounted on a smooth platform efficiently, a fast algorithm is introduced to evaluate the S-parameters. Firstly, this algorithm proposes to expand the radiated fields of an antenna by spherical harmonic transform (SHT). Then, evaluate the field scattered by the platform with uniform theory of diffraction (UTD). Finally, the S-parameter between two antennas is computed with the reciprocity theorem. It requires measuring or simulating every antenna only once to compute the S-parameter between a couple of antennas efficiently, even if the two antennas are rotated arbitrarily. The numerical example shows that the proposed algorithm is almost as accurate as the method of moments/UTD hybrid method of FEKO, and the former is faster than the latter.

Key words: S-parameter, reciprocity theorem, spherical harmonic transform (SHT), uniform theory of diffraction (UTD)

中图分类号:

TN82
O441

刘宏伟, 谢敏, 魏兵, 袁浩波. 高效率计算光滑平台上远距离天线间互耦算法[J]. 系统工程与电子技术, 2022, 44(1): 28-33.

Hongwei LIU, Min XIE, Bing WEI, Haobo YUAN. Efficient algorithm to compute the coupling between long-distance antennas mounted on a smooth platform[J]. Systems Engineering and Electronics, 2022, 44(1): 28-33.

图/表 6

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算法	x	y	z
MoM(无平台)	8.984	2.462	4.632
MoM/UTD(有平台)	8.714	2.425	4.821
本文方法(有平台)	8.684	2.426	4.883

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高效率计算光滑平台上远距离天线间互耦算法

Efficient algorithm to compute the coupling between long-distance antennas mounted on a smooth platform

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