A new broadband electromagnetic wave absorber based on a periodic surface and a method to increase its absorption bandwidth is proposed. The proposed absorber structure shows broadband characteristics, and its bandwidth is improved by generating additional resonances through a reasonable approach. To provide an understanding of the logical design procedure, an analytical method to determine the sheet resistance and new equivalent circuit models for analysing the impedance are both presented. From the analysis, it is shown that the exact range of the sheet resistance corresponding to the desired absorption level can be efficiently estimated for the resonance of the structure. For the verification of this approach to obtain an efficient design, as well as the functionality of both the absorber and the proposed method, experimental results are demonstrated along with analytical and computational results. The final measured results using the proposed method show a broadband reflectivity response, with a fractional bandwidth of approximately 93% below −10 dB and a bandwidth increase of 17%.

References

1. 1)
  - S. Chakravarty , R. Mittra , N.R. Williams . On the application of the microgenetic algorithm to the design of broad-band microwave absorbers comprising frequency-selective surfaces embedded in multilayered dielectric media. IEEE Trans. Microw. Theory Tech. , 1050 - 1059
2. 2)
  - 13. Kwak, S.I., Sim, D.U., Kwon, J.H.: ‘Design of optimized multilayer PIFA with the EBG structure for SAR reduction in mobile applications’, IEEE Trans. EMC, 2011, 53, (2), pp. 325–331.
3. 3)
  - K.N. Rozanov . Ultimate thickness to bandwidth ratio of radar absorbers. IEEE Trans Antennas Propag. , 8 , 1230 - 1234
4. 4)
  - A. Kazemzadeh , A. Karlsson . On the absorption mechanism of ultra thin absorbers. IEEE Trans. Antennas Propag. , 10 , 3310 - 3315
5. 5)
  - 12. Kiani, G.I., Ford, K.L., Esselle, K.P., et al: ‘Oblique incidence performance of a novel frequency selective surface absorber’, IEEE Trans. Antennas Propag., 2007, 55, (10), pp. 2931–2934 (doi: 10.1109/TAP.2007.905980).
6. 6)
  - B. Chambers . Optimum design of a Salisbury screen radar absorber. Electron. Lett. , 16 , 1353 - 1354
7. 7)
  - 16. Pozar, D.M.: ‘Microwave engineering’ (Wiley, 1998, 2nd edn.).
8. 8)
  - K.W. Whites , R. Mittra . An equivalent boundary-condition model for lossy planar periodic structures at low frequencies. IEEE Trans. Antennas Propag. , 12 , 1617 - 1628
9. 9)
  - A.K. Zadeh , A. Karlsson . Capacitive circuit method for fast and efficient design of wideband radar absorbers. IEEE Trans. Antennas Propag. , 8 , 2307 - 2314
10. 10)
  - 18. Remski, R.: ‘Analysis of PBG surfaces using Ansoft HFSS’, Microw. J., 43, (9), pp. 190–198.
11. 11)
  - 10. Fallahi, A., Yahaghi, A., Benedickter, H., Abiri, H., Shahabadi, M., Hafner, C.: ‘Thin wideband radar absorbers’, IEEE Trans. Antennas Propag., 2010, 58, (12), pp. 4051–4058 (doi: 10.1109/TAP.2010.2078482).
12. 12)
  - J.H. Kwon , S.I. Kwak , D.U. Sim , J.G. Yook . Partial EBG structure with decap for ultra-wideband suppression of simultaneous switching noise in a high speed system. ETRI J. , 2 , 265 - 272
13. 13)
  - 19. Advanced Design System (ADS), Agilent EEsof EDA, Agilent Technologies, Inc..
14. 14)
  - 6. Ju, J.H., Kim, D.H., Lee, W.J., Choi, J.I., et al: ‘Design method of a circularly-polarized antenna using fabry-perot cavity structure’, ETRI J., 2011, 33, (2), pp. 163–168 (doi: 10.4218/etrij.11.0110.0267).
15. 15)
  - Q. Gao , Y. Yin , D.B. Yan , N.C. Yuan . Application of metamaterials to ultra-thin radar-absorbing material design. Electron. Lett. , 17 , 936 - 937
16. 16)
  - B.A. Munk , P. Munk , J. Pryor . On designing Jaumann and circuit analog absorbers (CA absorbers) for oblique angle of incidence. IEEE Trans. Antennas Propag. , 1 , 186 - 193
17. 17)
  - 2. Munk, B.A.: ‘Frequency selective surfaces: theory and design’ (Wiley, 2000).
18. 18)
  - F. Costa , A. Monorchio , G. Manara . Analysis and design of ultra thin electromagnetic absorbers comprising resistively loaded high impedance surfaces. IEEE Trans. Antennas Propag. , 5 , 1551 - 1558
19. 19)
  - D. Sievenpiper . High-impedance electromagnetic surface with a forbidden frequency band. IEEE Trans. Microw. Theory Tech. , 11 , 2059 - 2074
20. 20)
  - R.L. Fante , M.T. McCormack . Reflection properties of the Salisbury screen. IEEE Trans. Antennas Propag. , 1443 - 1454
21. 21)
  - 20. Jose, K.A., Varadan, V.V., Varadan, V.K.: ‘Free-space vs. one-horn interferometer techniques for radar absorber measurements’, Microw. J., 1998, 14, (9), pp. 148–154.
22. 22)
  - A.P. Feresidis , G. Goussetis , S. Wang , J.C. Vardaxoglou . Artificial magnetic conductor surfaces and their application to low-profile high-gain planar antennas. IEEE Trans. Antennas Propag. , 1 , 209 - 215
23. 23)
  - A. Tennant , B. Chambers . A single-layer tuneable microwave absorber using an active FSS. IEEE Microw. Wirel. Compon. Lett. , 46 - 47

Design of electromagnetic wave absorber using periodic structure and method to broaden its bandwidth based on equivalent circuit-based analysis

References

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