附加延时线的阵列天线模式项RCS减缩优化

doi:10.3969/j.issn.1001-2400.2011.02.022

Abstract

Abstract:

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.

Key words: array antenna, antenna-mode scattering, radar corss section reduction, delay line

WANG Wentao;ZHANG Pengfei;GONG Shuxi;WANG Xing;HONG Tao;LU Bao. Antenna-mode RCS reduction optimization for array antennas with additional delay lines[J].J4, 2011, 38(2): 124-128.

[1]	SONG Jiaqi, TAO Haihong. Near-field beam synthesis algorithm for sparse array antennas [J]. Journal of Xidian University, 2018, 45(6): 14-18.
[2]	GONG Jian;LOU Shuntian;ZHANG Weitao. Method of array antenna DOA under strong interference presence [J]. Journal of Xidian University, 2018, 45(1): 168-172.
[3]	ZHANG Honggang;LIU Luokun;JIAN Chunxiao;ZHANG Xianfeng;ZHENG Xiaoyu. Novel design method for the ultra-wideband digital phase shifter [J]. Journal of Xidian University, 2016, 43(6): 129-134.
[4]	CHEN Hongwei;ZHANG Guangqiu;LEI Xue;WU Junmo;SUN Wujian. Design of the beam scanning microstrip reflectarray antenna [J]. J4, 2015, 42(6): 173-178.
[5]	GAO Jun;ZHOU Yulong;YANG Qun;CAO Xiangyu . Design of an array antenna with a low-sidelobe and sharp-cutoff pattern shaping [J]. J4, 2015, 42(2): 152-156.
[6]	WANG Jianxiao;YANG Lin;GONG Shuxi;FU Demin;FENG Xueyong;WANG Yi . Study of wide-angle scanning phased array antenna measurement [J]. J4, 2015, 42(2): 40-44.
[7]	LIU Yan;JIAO Yongchang;ZHANG Yaming;WANG Xinkuan. Application of the hybrid invasive weed optimization algorithm to the shaped beam synthesis of array antennas [J]. J4, 2014, 41(4): 94-99.
[8]	LIU Yan;JIAO Yongchang;ZHANG Yaming;WANG Xinkuan. Application of the invasive weed optimization algorithm to the pattern synthesis of array antennas [J]. J4, 2014, 41(1): 29-33+86.
[9]	ZHANG Shuyin;GUO Ying;QI Zisen;HUO Wenjun. Propagator method for multiple-parameter estimation of LFM signal for conformal array antenna [J]. J4, 2013, 40(4): 181-187.
[10]	WANG Fuwei;GONG Shuxi;ZHANG Pengfei;HONG Tao;YU Songtao;MA Ji. Radar absorbing material applied to the RCS reduction of array antennas [J]. J4, 2012, 39(5): 91-95.
[11]	ZHANG Shuai;GONG Shuxi;GUAN Ying;GONG Qi;LU Bao. Calculation and application of the mutual impedance and the scattering matrices of large finite arrays [J]. J4, 2012, 39(3): 106-113.
[12]	CHEN Xi；FU Guang；GONG Shuxi；YAN Yali；LIU Haifeng. Study of calibration of the phase center of array antennas and its error analysis [J]. J4, 2011, 38(3): 145-149.
[13]	ZHANG Shuai;GONG Shu-xi;LU Bao;GONG Qi. Method for improving the optimization efficiency of sparse linear arrays [J]. J4, 2010, 37(5): 888-892+910.
[14]	CHEN Pan;CAO Xiang-yu;GAO Jun. Wide-band and low cross-polarization array antenna design using the umbrellalike printed dipole [J]. J4, 2010, 37(5): 966-970.
[15]	GAO Jun;CAO Xiang-yu;ZHANG Guang;WEN Xi. Analysis and design of a phased array antenna with a shaped pattern [J]. J4, 2008, 35(6): 1084-1088.

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

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0