Abstract
An ultra-wideband absorber based on employing multiple resonators in the unit cell of a 3-D frequency-selective structure is proposed. The original design consists of two-dimensional periodic array of three-dimensional unit cells and lumped components to provide matching with free space and absorb the incident electromagnetic wave. By introducing one more resonator in the unit cell, an ultra-wideband absorber can be constructed. It has a fractional bandwidth of 155.7 % for -10 dB of reflection coefficient under the normal incidence with an absorber thickness of 0.12 λ0 at the lowest absorption frequency. This absorber works for TE polarization at which two quasi-TEM modes are excited in the air and substrate regions. The proposed absorber shows a stable performance under oblique angles of incidence.
| Original language | English |
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| Title of host publication | Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 1802-1804 |
| Number of pages | 3 |
| ISBN (Electronic) | 9781509044511 |
| DOIs | |
| State | Published - 11 Oct 2017 |
| Externally published | Yes |
Publication series
| Name | Proceedings of the 2017 19th International Conference on Electromagnetics in Advanced Applications, ICEAA 2017 |
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Bibliographical note
Publisher Copyright:© 2017 IEEE.
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Instrumentation
- Radiation