An X-Band Flat Broadband Transformation-Optics-Driven Luneburg Lens Antenna for Synthetic Aperture Radar

被引:0
作者
Su, Yuanyan [1 ]
Chen, Zhi Ning [1 ]
Balon, Siegfred Daquioag [1 ]
Yu, Cheong Ke [1 ]
机构
[1] Natl Univ Singapore, Dept Elect & Comp Engn, 4 Engn Dr 3, Singapore 117583, Singapore
来源
2018 ASIA-PACIFIC MICROWAVE CONFERENCE PROCEEDINGS (APMC) | 2018年
关键词
imaging; metamaterial antennas; lens antennas; synthetic aperture radar; transformation optics;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Inspired by the method of transformation optics, a flat light-weight Luneburg lens antenna for synthetic aperture radar (SAR) application is presented. The designed antenna is constructed by the gradient index metamaterials implemented on several thin stacked PCB layers with specific index distribution of polynomials. Due to the non-resonant properties of the unit cells, the designed antenna is able to achieve a wideband performance so as to improve the range resolution for a SAR image. In addition, the 3dB beamwidth of such antenna in E-plane reaches 19.8, thus obtaining a tine azimuth resolution of 5.6 cm. To demonstrate its feasibility, the proposed antenna is applied to the self-developed indoor rail SAR system.
引用
收藏
页码:702 / 704
页数:3
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