Vol. 79

Front:[PDF file] Back:[PDF file]
Latest Volume
All Volumes
All Issues

Polarization-Insensitive Frequency-Selective Rasorber Based on Square-Loop Element

By Qiang Chen, Min Guo, Di Sang, and Yunqi Fu
Progress In Electromagnetics Research M, Vol. 79, 41-49, 2019


This paper presents a polarization-insensitive frequency selective rasorber which has high in-band transmission at high frequency and wideband absorption at low frequency based on square-loop and parallel LC resonance. The rasorber consists of a bandpass FSS and a resistive sheet plus a slot-type metallic four-legged loaded element as the bandpass FSS element. The resistive element is realized by inserting several strip-type parallel LC structures into a resistor-loaded square-loop element, which allows the surface current to be controlled as necessary and the wave at the resonance frequency to be passed with minimum insertion loss. Wideband absorption is realized at low frequency, where the bandpass FSS is nearly totally reflected, and the FSR performs as an absorber. Simulation results show the transmission band at 9.9 GHz with transmissivity higher than 96% and the absorption band with absorptivity higher than 85% from 2.83 GHz to 8.6 GHz for TE-polarized 30˚ incidence and from 3.22 GHz to 8.48 GHz for TM-polarized 30˚ incidence. The absorptive/transmissive performance of the FSR structure is also verified ed by experimental measurements.


Qiang Chen, Min Guo, Di Sang, and Yunqi Fu, "Polarization-Insensitive Frequency-Selective Rasorber Based on Square-Loop Element," Progress In Electromagnetics Research M, Vol. 79, 41-49, 2019.


    1. Munk, B. A., Metamaterials: Critique and Alternatives, Wiley, New Jersey, 2009.

    2. Costa, F. and A. Monorchio, "A frequency selective radome with wideband absorbing properties," IEEE Trans. Antennas Propag., Vol. 60, No. 6, 2740-2747, 2012.

    3. Shang, Y. P., Z. X. Shen, and S. Q. Xiao, "Frequency-selective rasorber based on square-loop and cross-dipole arrays," IEEE Trans. Antennas Propag., Vol. 62, No. 11, 5581-5589, 2014.

    4. Munk, B. A., Frequency Selective Surfaces: Theory and Design, Wiley, New York, 2000.

    5. Costa, F., A. Monorchio, and G. Manara, "Analysis and design of ultra-thin electro-magnetic absorbers comprising resistively loaded high impedance surfaces," IEEE Trans. Antennas Propag., Vol. 58, No. 5, 1511-1558, 2010.

    6. Li, M., S. Xiao, Y. Bai, and B. Wang, "An ultrathin and broadband radar absorber using resistive FSS," IEEE Antennas Wireless Propag., Vol. 11, 748-751, 2012.

    7. Han, Y., W. Che, C. Christopoulos, Y. Xiong, and Y. Chang, "A fast and efficient design method for circuit analog absorbers consisting of resistive square-loop arrays," IEEE Trans. Electromagn. Compat., Vol. 58, No. 3, 747-757, 2016.

    8. Shang, Y., Z. Shen, and S. Xiao, "On the design of single-layer circuit analog absorber using double-square-loop array," IEEE Trans. Antennas Propag., Vol. 61, No. 12, 6022-6029, 2013.

    9. Yang, J. and Z. Shen, "A thin and broadband absorber using double-square loops," IEEE Antennas Wireless Propag. Lett., Vol. 6, 388-391, 2007.

    10. Ghosh, S., S. Bhattacharyya, and K. V. Srivastava, "Design, characterisation and fabrication of a broadband polarisation-insensitive multi-layer circuit analogue absorber," IET Microw, Antennas Propag., Vol. 10, No. 10, 850-855, 2016.

    11. Liu, L. G., P. F. Guo, J. J. Huang, W. W. Wu, J. J. Mo, Y. Q. Fu, and N. C. Yuan, "Design of an invisible radome by metamaterial absorbers loaded with lumped resistors," Chin. Phys. Lett., Vol. 29, No. 1, 012101, 2012.

    12. Zhou, H., L. Yang, S. Qu, K. Wang, J. Wang, H. Ma, and Z. Xu, "Experimental demonstration of an absorptive/transmissive FSS with magnetic material," IEEE Antennas Wireless Propag. Lett., Vol. 13, 114-117, 2014.

    13. Li, B. and Z. X. Shen, "Wideband 3D frequency selective rasorber," IEEE Trans. Antennas Propag., Vol. 62, No. 12, 6536-6541, 2014.

    14. Chen, Q., J. J. Bai, L. Chen, and Y. Q. Fu, "A miniaturized absorptive frequency selective surface," IEEE Antennas Wireless Propag. Lett., Vol. 14, 80-83, 2015.

    15. Chen, X., Y. Q. Li, Y. Q. Fu, and N. C. Yuan, "Design and analysis of lumped resistor loaded metamaterial absorber with transmission band," Opt. Express, Vol. 20, No. 27, 28347-28352, 2012.

    16. Chen, Q., L. Chen, J. J. Bai, and Y. Q. Fu, "Design of absorptive frequency selective surface with good transmission at high frequency," Electron. Lett., Vol. 51, No. 12, 885-886, 2015.

    17. Chen, Q., L. G. Liu, L. Chen, J. J. Bai, and Y. Q. Fu, "Absorptive frequency selective surface using parallel LC resonance," Electron. Lett., Vol. 52, No. 6, 418-419, 2016.

    18. Chen, Q., S. L. Yang, J. J. Bai, and Y. Q. Fu, "Design of absorptive/transmissive frequency-selective surface based on parallel resonace," IEEE Trans. Antennas Propag., Vol. 65, No. 9, 4897-4902, 2017.