High Power Laser and Particle Beams, Volume. 36, Issue 6, 063002(2024)
A frequency selective surface absorber for electromagnetic shielding in enclosed cabins
Figures & Tables(14)
Fig. 2. Phase compensation mechanism of the proposed absorber for oblique incidence
Fig. 4. Comparison of input impedance and reflection coefficient of FSS 1, FSS 2 and FSS 3 absorbers
Fig. 5. Surface current density distribution of FSS 2 and FSS 3 absorbers
Fig. 6. Comparison of input impedance and reflection coefficient for FSS 3, FSS 4 and FSS 5 absorbers
Fig. 7. Surface current density distribution of FSS 4 and FSS 5 absorbers
Fig. 8. Absorptivity of the absorber at different incidence angles
Fig. 9. Influence of main structure parameters on the absorptivity
Fig. 11. Comparison of measured and simulated absorptivity at normal incidence
Fig. 12. Measured absorptivity of the absorber at different incidence angles
Table 1. Structure parameters of the proposed FSS absorber
View tableView in ArticleTable 1. Structure parameters of the proposed FSS absorber
p/mm h1/mm h2/mm h3/mm h4/mm l1/mm l2/mm l3/mm 7.5 4.6 0.508 1.1 1.0 2.5 2.4 1.1 w1/mm w2/mm w3/mm w4/mm s1/mm s2/mm R/Ω 0.5 0.5 1.6 0.5 0.5 0.3 120
Table 2. Simulation performance comparison with other FSS absorbers
View tableView in ArticleTable 2. Simulation performance comparison with other FSS absorbers
references absorption band (A＞90%)/(GHz) FBW/% thickness/ λL angular stability (A＞ 80%) number of lumped resistors in the unit cell Num/Com FBW : fractional bandwidth, FBW = 2(fh−fl)/(fh+fl); A : absorptivity; * : A＞ 90%; Num: number of lossy FSSs; Com: compensation layer. Ref.[ 11 ]4.7–16.75 112.4 0.103 30° * 8 1/No Ref.[ 12 ]6.7–20.58 101.7 0.067 TE30°、TM45° 8 1/No Ref.[ 13 ]2.7–12.7 130.0 0.084 40° 8 1/No Ref.[ 14 ]2.24–11.4 134.3 0.075 45° 16 2/No Ref.[ 15 ]3.87–14.84 117.0 0.190 TE40°、TM50° 8 2/No Ref.[ 17 ]2.11–3.89 59.3 0.09 50° * 8 3D Ref.[ 18 ]5.8–22.2 117.1 0.155 TE40°、TM50° * 16 1/Yes Ref.[ 20 ]1.08–5.9 138.1 0.113 45° * 8 1/Yes Ref.[ 25 ]3.58–12.1 108.7 0.077 30° 4 1/No this work 3.9–25.8 147.8 0.094 50° 4 1/Yes
Tools
Get Citation
Copy Citation Text
Yushuang Jin, Dongjun Wang, Yuan Zhang, Changjun Liu, Liping Yan. A frequency selective surface absorber for electromagnetic shielding in enclosed cabins[J]. High Power Laser and Particle Beams, 2024, 36(6): 063002
Paper Information
Category:
Received: Dec. 22, 2023
Accepted: Mar. 12, 2024
Published Online: Jun. 3, 2024
The Author Email: Yan Liping (liping_yan@scu.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20