On the design of wide-band and thin absorbers using the multiple resonances concept

Shen, Zhongxiang; Zheng, Bin; Mei, Zhilin; Yang, Juan; Tang, Wei

doi:10.1109/icmmt.2008.4540292

Cited by 11 publications

(8 citation statements)

References 14 publications

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“…Generally, wideband absorbers fall into two structural categories: planar [8][9][10][11][12][13][14][15] and three-dimensional [16][17][18][19]. Planar metamaterial absorbers typically achieve broadband absorption through the employment of FSS loaded with lumped resistors [8][9][10][11], or by using High Impedance Surfaces (HIS) [12,13]. And these two kinds of lossy layers are usually placed a quarter wavelength above the metal plate for achieving optimal absorption.…”

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confidence: 99%

“…However, the design of SLA absorber always needs numerous lumped resistors. For example, the designs in [8] and [9] each require eight resistors per unit, while [10] requires 16 lumped resistors per element. The purpose of using SLA is to generate multiple resonances to extend the absorption bandwidth.…”

mentioning

confidence: 99%

“…The purpose of using SLA is to generate multiple resonances to extend the absorption bandwidth. However, as demonstrated in [8][9][10][11], a single-layer SLA or other structures loaded with resistors can only produce a maximum of three resonance points. If we want to arouse additional resonance, we need to use more square rings or increase the number of the lossy layer [15].…”

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confidence: 99%

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confidence: 99%

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A polarization‐insensitive ultra‐wideband absorber based on hybrid structure

Xue

Sun

Qin

et al. 2023

Electronics Letters

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With the continuous improvement of detection technology, the survivability of targets on the battlefield is facing great challenges. Consequently, microwave absorbers with stealth characteristics are of important research value to modern military. Aim at solving the problems of narrow bandwidth or complex structure, an implementation model of ultra‐wideband (UWB) absorber based on hybrid structure is proposed. In this letter, a polarization‐insensitive ultra‐wideband absorber (PIUWA) is designed, manufactured, and characterized, which has a good absorptivity of more than 90% ranges from 4 to 24.53GHz (the fractional bandwidth [FBW] is 144%) by triggering multiple resonance peaks in the hybrid structure. In addition, the subwavelength periodicity of the PIUWA is theoretically beneficial to the angular stability under full‐wave polarizations. The operating mechanism of the PIUWA is demonstrated by the equivalent circuit model and the correctness of the design is verified by experimental measurements. This letter contributes to the approach of designing and fabricating UWB microwave absorbers with high absorptivity, good angular stability, and simpler assembly procedure.

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confidence: 99%

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confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

A polarization‐insensitive ultra‐wideband absorber based on hybrid structure

Xue

Sun

Qin

et al. 2023

Electronics Letters

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show abstract

“…Broadly, wideband absorbers fall into two structural categories: planar [9][10][11][12][13][14] and three-dimensional [15][16][17][18][19]. Planar metamaterial absorbers typically achieve broadband absorption through the employment of FSS loaded with lumped resistors [10][11][12], or by using High Impedance Surfaces (HIS) as lossy layers [13,14]. These lossy layers are typically positioned a quarter-wavelength above the metal plate to optimize absorption.…”

mentioning

confidence: 99%

A polarization-insensitive ultra-wideband absorber based on hybrid structure

Xue

Qin

Sun

et al. 2023

Preprint

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As detection technology continually advances, the survivability of targets on the battlefield is significantly challenged. Therefore, microwave absorbers with stealth capabilities have become a focal point of research in modern military science. To address the issues of narrow bandwidth and complex structures in existing absorbers, we propose a model for an ultra-wideband absorber based on a hybrid structure. In this study, we design, manufacture, and characterize a polarization-insensitive ultra-wideband absorber (PIUWA), which demonstrates impressive absorptivity of over 90% across a range of 4-24.53GHz (a fractional bandwidth of 144%). This is achieved by inducing multiple resonance peaks within the hybrid structure. Moreover, the subwavelength periodicity of the PIUWA theoretically contributes to its angular stability under full-wave polarizations. We observed that absorption performance remains stable under incident conditions within 45 degrees. Furthermore, the operational mechanism of the PIUWA is elucidated through an equivalent circuit model, with design validity confirmed via experimental measurements. This study paves the way for the design and fabrication of ultra-wideband microwave absorbers that offer high absorptivity, robust angular stability, and simpler assembly processes, thereby broadening the potential for application in other absorber types.

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Analysis of circuit analog absorbing electromagnetic structures by using vector spectral-domain method

Qing

2009

2009 Asia Pacific Microwave Conference

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Circuit analog absorbing electromagnetic structures form one essential category of absorbing electromagnetic materials and structures and exhibit unique promising features. In this paper, the vector spectral-domain method has been further generalized to analyze circuit analog absorbing electromagnetic structures accurately and efficiently.Index Terms -frequency selective surfaces, circuit analog absorbing electromagnetic structures, vector spectral-domain method.

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On the design of wide-band and thin absorbers using the multiple resonances concept

Cited by 11 publications

References 14 publications

A polarization‐insensitive ultra‐wideband absorber based on hybrid structure

A polarization‐insensitive ultra‐wideband absorber based on hybrid structure

A polarization-insensitive ultra-wideband absorber based on hybrid structure

Analysis of circuit analog absorbing electromagnetic structures by using vector spectral-domain method

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