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- Title
High-gain low-RCS slot antenna array based on checkerboard surface.
- Authors
Hao Jiang; Zhenghui Xue; Qingyun Zeng; Weiming Li; Wu Ren
- Abstract
In-band and out-of-band radar cross-section reduction (RCSR) as well as gain enhancement for a slot antenna array is presented. The checkerboard surface (CS), combining an electromagnetic band gap structure and a metallic grounded slab, is adopted to realise a wideband RCSR. The analysis indicates a 10 dB RCSR of the CS compared with the perfect electric conductor surface can be achieved over 60% frequency bandwidth. Then, the designed CS is placed on the top surface of the 2 x 2 slot antenna array, and the measured results reveal that the proposed slot array possesses in-band and out-of-band RCSR from 5 to >12 GHz for both co- and cross-polarisations. Apart from the wideband RCSR, the gain enhancement is about 2.1 dB compared with the slot antenna array without the CS.
- Subjects
SLOT antenna arrays; RADAR antennas; ANTENNA radiation patterns; ELECTRICAL conductors; PHOTONIC band gap structures
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2018, Vol 12, Issue 2, p237
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2017.0524