Zhurnal Radioelektroniki - Journal of Radio Electronics. eISSN 1684-1719. 2020. No. 12
ContentsFull text in Russian (pdf)
DOI https://doi.org/10.30898/1684-1719.2020.12.
4UDC 621.371: 538.574
Block principle of constructing and estimating the rcs reduction of nonabsorbing broadband 2 bit anisotropic digital meta-coatings
A.
I. Semenikhin, D. V. Semenikhina, Y. V. Yukhanov, P. V. BlagovisnyySouthern Federal University, Institute of the Radio Engineering Systems and Control,
Nekrasovskyy Lane, 44, Taganrog 347928, Russia
The paper is received on December 4, 2020
Abstract. The block principle of constructing of coding matrices for non-absorbing flat digital anisotropic meta-coatings (MC) used to reduce monostatic RCS of objects is considered. The essence of this principle consists in 2-bit coding of the tilt angles of the anisotropy axes of the MC modules so that four arbitrary adjacent modules of the MC form two pairs of antiphase modules. The use of the block principle in the development of a MC provides a reduction of monostatic RCSs on cross polarization due to cancellation of interference waves. The reduction of the monostatic RCS of a MC at matched polarization (co-RCS) is due to the twist-effect. Simultaneously with cancellation and twist-effect, diffuse wave scattering is implemented in the developed digital MCs. The proposed 2-bit anisotropic MCs make it possible to achieve a more effective reduction of monostatic co-RCS (in relation to the traditionally accepted level of minus 10 dB) in a wide frequency band, for different polarization planes of the incident wave. The impedance and full-wave models of the two main blocks of digital anisotropic MCs are developed. An asymptotic representation of the polarization scattering matrix is obtained for the impedance model of the MC block using the method of physical optics. The algorithm for calculating the frequency characteristics (FC) of monostatic co-RCS of impedance models of MC blocks is implemented in the Octave program. Full-wave models of MC blocks are built using the HFSS program. Layouts of two main MC blocks were made. Monostatic co-RCSs of the blocks are measured in the 7÷17.5 GHz frequency band for different polarizations of the incident wave. It is shown that the calculated and measured frequency characteristics of monostatic RCS of the models and layouts of blocks of 2-bit anisotropic MCs are in good agreement. The calculated and measured levels of monostatic RCS reduction of the main blocks are at least 12.5 - 13.5 dB at different co-polarizations in the band from 10.2 to 17.5 GHz and higher (based on the results of calculations).
Key words: anisotropic digital meta-coatings, metasurfaces, measurement of RCS, twist-effect, physical optics method, coding matrices, full-wave simulation.
References
1. Iriarte J.C., Pereda A.T., de Falcon J.L.M., Ederra I., Gonzalo R. Broadband Radar Cross-Section Reduction using AMC Technology. IEEE Transactions on Antennas and Propagation. 2013. Vol.61. No.12. P.6136-6143. https://doi.org/10.1109/tap.2013.2282915
2. Chen W., Balanis C.A., Birtcher C.R. Checkerboard EBG Surfaces for Wideband Radar Cross Section Reduction. IEEE Transactions on Antennas and Propagation. 2015. Vol.63. No.6. P.2636-2645.
https://doi.org/10.1109/tap.2015.2414440
3. Chen W., Balanis C.A., Birtcher C.R. Dual Wide-Band Checkerboard Surfaces for Radar Cross Section Reduction. IEEE Transactions on Antennas and Propagation. 2016. Vol.64. No.9. P.4133-4138. hthttps://doi.org/10.1109/tap.2016.2583505
4. Haji-Ahmadi M.-J., Nayyeri V., Soleimani M., Ramahi O.M. Pixelated Checkerboard Metasurface for Ultra-Wideband Radar Cross-Section Reduction. Scientific Reports. 2017. Vol.7. No.1. 12 p. Available at:
https://www.nature.com/articles/s41598-017-11714-y. https://doi.org/10.1038/s41598-017-11714-y
5. Modi A.Y., Balanis C.A., Birtcher C.R., Shaman H. Novel Design of Ultrabroadband Radar Cross Section Reduction Surfaces using Artificial Magnetic Conductors. IEEE Transactions on Antennas and Propagation. 2017. Vol.65. No.10. P.5406-5417. https://doi.org/10.1109/tap.2017.2734069
6. Yang J.J., Cheng Y.Z., Ge C.C., Gong R.Z. Broadband Polarization Conversion Metasurface Based on Metal Cut-Wire Structure for Radar Cross Section Reduction. Materials. 2018. Vol.11. No.4. 12 p. Available at:
https://www.mdpi.com/1996-1944/11/4/626/htm. https://doi.org/10.3390/ma11040626
7. Jiang W., Xue Y., Gong S.-X. Polarization Conversion Metasurface for Broadband Radar Cross Section Reduction. Progress In Electromagnetics Research Letters. 2016. Vol.62. P.9-15. Available at: http://www.jpier.org/PIERL/pier.php?paper=16060504. https://doi.org/10.2528/pierl16060504
8. Su J., Lu Y., Liu J., Yang Y., Li Z., Song J. A Novel Checkerboard Metasurface Based on Optimized Multielement Phase Cancellation for Superwideband RCS Reduction. IEEE Transactions on Antennas and Propagation. 2018. Vol.66. No.12, P.7091-7099. https://doi.org/10.1109/tap.2018.2870372
9. Lu Y., Su J., Liu J., Guo Q., Yin H., Li Z., Song J. Ultrawideband Monostatic and Bistatic RCS Reductions for Both Copolarization and Cross Polarization Based on Polarization Conversion and Destructive Interference. IEEE Transactions on Antennas and Propagation. 2019. Vol.67. No.7. P.4936-4941. https://doi.org/10.1109/tap.2019.2911185
10.Semenikhin A.I., Semenikhina D.V., Yukhanov Yu.V. and Klimov A.V. RCS reduction using non-absorptive binary coatings with anisotropic impedance metasurface. Antenny – Antennas. 2019. No.1. P.65-72. https://doi.org/10.18127/j03209601-201901-09 (in Russian)
11.Semenikhin A.I., Semenikhina D.V., Yukhanov Y.V., Blagovisnyy P.V. Broadband RCS Reduction Using Digital Impedance Metasurfaces with 2-bit Coding of Axes of Anisotropy and Eigen Reactances. 2018 Progress in Electromagnetics Research Symposium (PIERS-Toyama). 2018. 8 p. https://doi.org/10.23919/piers.2018.8597701
12.GNU Octave: Scientific Programming Language. Available online: https://www.gnu.org/software/octave/ (Accessed 27.09.2020)
13.Ansys HFSS: 3D Electromagnetic Field Simulator for RF and Wireless Design. Available online: https://www.ansys.com/products/electronics/ansys-hfss/ (Accessed 27.09.2020)
14.Blagovisnyy P.V., Semenikhin A.I. Full-wave and impedance models of ultra wideband thin twist-metapolarizers for cloacking coverings. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.8. https://doi.org/10.30898/1684-1719.2020.8.12 (In Russian)
For citation:
Semenikhin A.I., Semenikhina D.V., Yukhanov Y.V., Blagovisnyy P.V. Block principle of constructing and estimating the rcs reduction of nonabsorbing broadband 2 bit anisotropic digital meta-coatings. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2020. No.12.https://doi.org/10.30898/1684-1719.2020.12.4 (In Russian)