Effect of Surface Error Distribution and Aberration on Electromagnetic Performance of a Reflector Antenna
Joint Authors
Wang, Congsi
Xiang, Binbin
Lian, Peiyuan
Source
International Journal of Antennas and Propagation
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-02
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
In this paper, a method based on the Zernike distribution and the optical aberration is proposed to investigate the effects of the distribution characteristics of surface distortions of a reflector antenna on its electromagnetic performance (EMP).
For large-scale errors, an analytical model is introduced to describe the arbitrary distortions, based on the orthogonal Zernike polynomials.
The effects of error distribution described by the Zernike series on typical EMP are analyzed.
The numerical results indicate that the distortions in the distribution feature of defocus or spherical aberration have a greater impact on gain, and the distribution feature of tilt or coma mainly influences boresight offset; the distribution feature of defocus, astigmatism, and spherical aberration has a greater impact on sidelobe levels.
The results indicate that the beam contour patterns are related to the distribution forms of distortions and are similar with the same aberration feature.
On the basis of the Seidel aberration, the relationships between typical EMP and the aberration coefficient are presented.
Based on these, the error profile of the primary influence and the approximate feature of EMP can be determined, and the antenna performance can be predicted in a simple manner.
American Psychological Association (APA)
Xiang, Binbin& Wang, Congsi& Lian, Peiyuan. 2019. Effect of Surface Error Distribution and Aberration on Electromagnetic Performance of a Reflector Antenna. International Journal of Antennas and Propagation،Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1157526
Modern Language Association (MLA)
Xiang, Binbin…[et al.]. Effect of Surface Error Distribution and Aberration on Electromagnetic Performance of a Reflector Antenna. International Journal of Antennas and Propagation No. 2019 (2019), pp.1-15.
https://search.emarefa.net/detail/BIM-1157526
American Medical Association (AMA)
Xiang, Binbin& Wang, Congsi& Lian, Peiyuan. Effect of Surface Error Distribution and Aberration on Electromagnetic Performance of a Reflector Antenna. International Journal of Antennas and Propagation. 2019. Vol. 2019, no. 2019, pp.1-15.
https://search.emarefa.net/detail/BIM-1157526
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1157526