Strong absorption and high transmission Rasorber with wide-angle enabled by 3D-printing metastructure and three metasurfaces

Abstract

The present investigation introduces a composite frequency selective Rasorber (CFSR) that demonstrates a wide −1 dB transmission band, two high absorption bands with absorptivity higher than 90%, and large oblique incidence angles up to 60°. The CFSR consists of four functional layers separated by three dielectric slabs, which includes lossless metasurface-I (MS-I), loss metasurface-II (MS-II), loss metasurface-III (MS-III), and a three-dimensional metastructure (3D-MS). MS-I functions as a reflector for two absorption bands with a minimal insertion loss transmission window. MS-II is designed for high-frequency absorption. MS-III serves as a low-frequency absorption layer for CFSR and an impedance matching layer for MS- II. The design methodologies for the transmission window in MS-III and the introduction of 3D-MS are key to achieving high-performance CFSR. The physical mechanisms of CFSR are explained through equivalent circuit model (ECM) analysis and impedance characterization. Finally, measurement results confirm that the proposed CFSR exhibits a −1 dB transmission band ranging from 8.79 to 10.41 GHz with a minimum insertion loss of 0.44 dB at 9.59 GHz; furthermore, the frequency range where reflection coefficient remains below −10 dB is measured to be between 3.33 and 18.00 GHz, aligning well with simulation outcomes.

Keywords

Rasorber / metasurface / 3D-printing metastructure / strong absorption / high transmission

References

[1] MunkBMetamaterials: critique and alternatives [M], 2009, New York. Wiley. .

[2] MunkBFrequency selective surfaces: theory and design [M], 2000, New York. Wiley. .

[3] ZhengY-j, GaoJ, CaoX-y, et al.. Wideband RCS reduction of a microstrip antenna using artificial magnetic conductor structures [J]. IEEE Antennas and Wireless Propagation Letters, 2015, 14: 1582-1585.

[4] ShiR-y, YuS-x, KouN. A miniaturized frequency-selective rasorber with absorption bands on two sides of passband for antenna dome [J]. IEEE Antennas and Wireless Propagation Letters, 2022, 21(11): 2161-2165.

[5] YuQ-m, LiuS-b, MonorchioA, et al.. Miniaturized wide-angle rasorber with a wide interabsorption high transparent bandpass based on multiple 2.5-D resonators [J]. IEEE Antennas and Wireless Propagation Letters, 2022, 21(2): 416-420.

[6] XingQ-j, WuW-w, YanY-c, et al.. A wideband frequency-selective rasorber with rectangular spiral resonators [J]. IEEE Antennas and Wireless Propagation Letters, 2022, 21(8): 1688-1692.

[7] XiuX, CheW-q, YangW-c, et al.. A highly selective rasorber based on second-order resonance [J]. IEEE Antennas and Wireless Propagation Letters, 2020, 19(2): 223-227.

[8] YuQ-m, LiuS-b, MonorchioA, et al.. A highly selective rasorber with ultraminiaturized unit based on interdigitated 2.5-D parallel resonator [J]. IEEE Transactions on Electromagnetic Compatibility, 2022, 64(5): 1585-1592.

[9] XingQ-j, WuW-w, YanY-c, et al.. Frequency-selective rasorber with two wide absorption bands and two transmission zeros [J]. Microwave and Optical Technology Letters, 2022, 64(9): 1529-1535.

[10] HuangX-j, MaY-t, LiX-y, et al.. Design of a frequency selective rasorber based on a band-patterned octagonal ring [J]. Materials, 2023, 1651960.

[11] PatinavalasaM S, BanothL, SharmaA, et al.. A frequency-selective rasorber with wideband absorption and in-band transmission using resistive ink [J]. Microwave and Optical Technology Letters, 2022, 64(9): 1544-1552.

[12] ChenY-x, WanG-b, MaX, et al.. A multilayer frequency-selective rasorber for wideband transmission based on harmonic suppression [J]. Microwave and Optical Technology Letters, 2024, 666e34224.

[13] ShangY-p, ShenZ-x, XiaoS-qiu. Frequency-selective rasorber based on square-loop and cross-dipole arrays [J]. IEEE Transactions on Antennas and Propagation, 2014, 62(11): 5581-5589.

[14] ChenQ, GuoM, SunZ-s, et al.. Polarization-independent frequency-selective rasorber with a broadened absorption band [J]. AEU - International Journal of Electronics and Communications, 2018, 96: 178-183.

[15] WangL-l, LiuS-b, KongX-k, et al.. Frequency-selective rasorber with a wide high-transmission passband based on multiple coplanar parallel resonances [J]. IEEE Antennas and Wireless Propagation Letters, 2020, 19(2): 337-340.

[16] JiaY-x, WangY-n, YinJ, et al.. Design of a hybrid frequency selective rasorber with wideband reflection suppression [J]. IEEE Antennas and Wireless Propagation Letters, 2023, 22(2): 293-297.

[17] WanW-p, LiY-f, WangH, et al.. Chiral absorber-based frequency selective rasorber with identical filtering characteristics for distinct polarizations [J]. IEEE Transactions on Antennas and Propagation, 2022, 70(5): 3506-3514.

[18] LuZ-g, WeiJ-f, YeH, et al.. Wide transmission band rasorber of center-connected pattern with multi-resonators [J]. Microwave and Optical Technology Letters, 2022, 64(8): 1331-1338.

[19] GuoM, ChenQ, SangD, et al.. Dual-polarized dual-band frequency selective rasorber with low insertion loss [J]. IEEE Antennas and Wireless Propagation Letters, 2020, 19(1): 148-152.

[20] ChenQ, SangD, GuoM, et al.. Frequency-selective rasorber with interabsorption band transparent window and interdigital resonator [J]. IEEE Transactions on Antennas and Propagation, 2018, 66(8): 4105-4114.

[21] MaZ, JiangC, LiJ-l, et al.. A dual-transmission-bands rasorber with improved absorption and oblique incidence performance [J]. Scientific Reports, 2022, 12120599.

[22] YounesH, LiR, LeeS E, et al.. Gradient 3D-printed honeycomb structure polymer coated with a composite consisting of Fe₃O₄ multi-granular nanoclusters and multi-walled carbon nanotubes for electromagnetic wave absorption [J]. Synthetic Metals, 2021, 275116731.

[23] YeX-c, YangC, HeE-y, et al.. Optimization design of 3D-printed pyramid structure for broadband electromagnetic wave absorption [J]. Journal of Alloys and Compounds, 2023, 963171258.

[24] ShiY, ChuP-p, MengZ-kui. Ultra-wideband hybrid polarization conversion-absorption metasurface with a transmission window and narrow transition bands [J]. Journal of Physics D: Applied Physics, 2023, 569095102.

[25] MaZ, JiangC, CaoW-b, et al.. An ultrawideband and high-absorption circuit-analog absorber with incident angle-insensitive performance [J]. IEEE Transactions on Antennas and Propagation, 2022, 70(10): 9376-9384.

[26] MaZ, LiuY-q, JiangC. Strong and wide microwave absorption of multilayered metastructure enhanced by impedance matching mechanism [J]. Results in Physics, 2024, 56107280.

RIGHTS & PERMISSIONS

Central South University