Radar Absorber Fabric Design Based on Periodic Arrays of Circular Shaped Conductive Patches

Abstract

In this study, the design and electrical tests of radar absorber fabric containing an array of circular shaped conductive patches positioned on a neoprene fabric are presented. In the designs, electrical performance of the radar absorber fabric is numerically studied in both planar and conformal structures. Furthermore, the two-dimensional (2D) surface current distribution at the resonant frequency is examined to better understand the operating principles of the proposed structure. Finally, the prototype of the radar absorber fabric is manufactured, and the frequency dependent reflection parameter values are measured by using the free space measurement technique to validate the numerical results. A good agreement between the measurement and numerical results is obtained.

Keywords

• Radar absorber fabric
• metamaterials
• frequency selective surfaces

References

1. Jayalakshmi, C. G.; Inamdar, A.; Anand, A.; Kandasubramanian, B. J., 2019. Polymer matrix composites as broadband radar absorbing structures for stealth aircrafts. J. Appl. Polym. Sci., 136: 1-21.
2. Laws, K. E; Vesecky, J. F.; Lovellette, M. N.; Paduan, J. D. Ship tracking by HF radar in coastal waters, OCEANS 2016 MTS/IEEE Monterey; Monterey, CA, USA, 2016, pp. 1-8.
3. Lee, R. J.; Steele, S. L. 2014. Military Use of Satellite Communications, Remote Sensing, and Global Positioning Systems in the War on Terror. Journal of Air Law and Commerce, 79(1), 69-80.
4. Dzvonkovskaya, A.; Gurgel, K.; Rohling, H.; Schlick, T. Low power High Frequency Surface Wave Radar application for ship detection and tracking. 2008 International Conference on Radar; Adelaide, SA, Australia, 2008, pp. 627-632.
5. Zhukov, P. A.; Kirillov, V. Y. The Use of Radar Absorbing Materials for Electronic Devices. International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE); Moscow, Russia, 2020, pp. 1-5.
6. Mitrano, C.; Balzano, A.; Bertacca, M.; Flaccavento, M.; Mancinelli, R. CFRP-based broad-band Radar Absorbing Materials. IEEE Radar Conference; Rome, Italy, 2008, pp. 1-6.
7. Perini, J; Cohen, L. S., 1993. Design of broad-band radar-absorbing materials for large angles of incidence. IEEE Transactions on Electromagnetic Compatibility, 35(2), 223-230.
8. Terracher, F.; Berginc, G. Thin electromagnetic absorber using frequency selective surfaces. IEEE Antennas and Propagation Society International Symposium. Transmitting Waves of Progress to the Next Millennium. 2000 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting; Salt Lake City, UT, USA, 2000, pp. 846-849.

9. Ming-liang, W.; Sheng-jun, Z.; Jia-qi, L.; Wei, L.; Xue-mei, L.; Liang, X. W. FSS design research for improving the wide-band stealth performance of radar absorbing materials. International Workshop on Metamaterials (Meta); Nanjing, China, 2012, pp. 1-4.
10. Varadan, V. V. Radar Absorbing Applications of Metamaterials. IEEE Region 5 Technical Conference; Fayetteville, AR, USA, 2007, pp. 105-108.
11. Lv, X.; Withayachumnankul, W.; Fumeaux, C. 2019. Single-FSS-Layer Absorber with Improved Bandwidth–Thickness Tradeoff Adopting Impedance-Matching Superstrate. IEEE Antennas and Wireless Propagation Letters, 18(5), 916-920.
12. Xu, H.; Bie, S.; Xu, Y.; Yuan, W.; Chen, Q.; Jiang, J., 2016. Broad bandwidth of thin composite radar absorbing structures embedded with frequency selective surfaces. Composites Part A: Applied Science and Manufacturing, 80, 111-117.
13. Bakshi, S. C.; Mitra, D. A Reconfigurable FSS Backed Continuously Tunable CAA Inspired Absorber. IEEE Indian Conference on Antennas and Propogation (InCAP); Hyderabad, India, pp. 1-4, 16-19 Dec. 2018.
14. Motevasselian, A.; Jonsson, B. L. G., 2011. Partially Transparent Jaumann-Like Absorber Applied to a Curved Structure. International Journal of Antennas and Propagation, 2011, 1-7.
15. CST Studio Suite 2019, available at www.3ds.com.
16. Yan, M.; et al. 2014. A Novel Miniaturized Frequency Selective Surface with Stable Resonance. IEEE Antennas and Wireless Propagation Letters, 13, 639-641.