Antenna-mode RCS reduction optimization for array antennas with additional delay lines

被引：1

作者：

Wang W. ^{[1
]}

Zhang P. ^{[1
]}

Gong S. ^{[1
]}

Wang X. ^{[1
]}

Hong T. ^{[1
]}

Lu B. ^{[1
]}

机构：

[1] Science and Technology on Antenna and Microwave Lab., Xidian Univ.

来源：

Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2011年 / 38卷 / 02期

关键词：

Antenna-mode scattering; Array antenna; Delay line; Radar cross section reduction;

D O I：

10.3969/j.issn.1001-2400.2011.02.022

中图分类号：

学科分类号：

摘要：

The radiation performance of an antenna must be ensured when reducing the antenna radar cross section (RCS), which makes the in-band RCS difficult to control. For this reason, this paper presents the method of loading delay lines with a varying length to achieve the antenna-mode RCS reduction of an array antenna. Antenna-mode scattering is essentially the reradiation of reflected energy, which comes from the electromagnetic wave received by the antenna and reflects at the mismatched point of the feed network. When a group of delay lines is loaded between the array elements and the feed network, the radiation energy passes through these delay lines once, while the scattering energy passes them twice. Therefore, by optimizing the length of each delay line and adjusting the phase difference between radiation and scattering, the antenna RCS can be reduced with a little degradation in radiation performance. The proposed examples of monostatic and bistatic RCS reduction show that the antenna-mode RCS can be reduced more than 14dB by this method.

引用

页码：124 / 128

页数：4

共 9 条

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