Two-step Structural Design of Mesh Antennas for High Beam Pointing Accuracy

被引：5

作者：

Zhang, Shuxin ^{[1
,2
]}

Du, Jingli ^{[1
]}

Wang, Wei ^{[1
]}

Zhang, Xinghua ^{[2
]}

Zong, Yali ^{[1
]}

机构：

[1] Xidian Univ, Key Lab Elect Equipment Struct Design, Minist Educ, Xian 710071, Peoples R China

[2] China Acad Space Technol, Qian Xuesen Lab Space Technol, Beijing 100094, Peoples R China

来源：

CHINESE JOURNAL OF MECHANICAL ENGINEERING | 2017年 / 30卷 / 03期

关键词：

Cable mesh reflector antennas; Structural design; Beam squint; Beam pointing accuracy; SECTION REFLECTOR ANTENNAS; DISTORTION COMPENSATION; SQUINT;

D O I：

10.1007/s10033-017-0134-0

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A well-designed reflector surface with high beam pointing accuracy in electromagnetic performance is of practical significance to the space application of cable mesh reflector antennas. As for space requirements, circular polarizations are widely used in spaceborne antennas, which usually lead to a beam shift for offset reflectors and influence the beam pointing accuracy. A two-step structural design procedure is proposed to overcome the beam squint phenomenon for high beam pointing accuracy design of circularly polarized offset cable mesh reflectors. A simple structural optimal design and an integrated structural electromagnetic optimization are combined to alleviate the beam squint effect of circular polarizations. It is implemented by cable pretension design and adjustment to shape the offset cable mesh surface. Besides, in order to increase the efficiency of integrated optimization, an update Broyden-Fletcher-Goldfarb-Shanno (BFGS) Hessian matrix is employed in the optimization iteration with sequential quadratic programming. A circularly polarized offset cable mesh reflector is utilized to show the feasibility and effectiveness of the proposed procedure. A high beam pointing accuracy in order of 0.0001A of electromagnetic performance is achieved.

引用

页码：604 / 613

页数：10

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