A stub-loaded reconfigurable broadband metamaterial absorber with wide-angle and polarization stability

Zhai, Huiqing; Zhang, Biao; Zhang, Kedi; Zhan, Chuanhan

doi:10.1080/09205071.2017.1293567

Cited by 20 publications

(7 citation statements)

References 27 publications

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“…The drawback of such absorbers is that these are very difficult to fabricate. Zhai et al recently investigated a reconfigurable MA for a wideband application [72]. The structure consists of stubs, lumped resistors, and inductors.…”

Section: Issues Of Bandwidth and Thicknessmentioning

confidence: 99%

The quest for perfect electromagnetic absorber: a review

Tirkey

Gupta

2018

Int. J. Microw. Wireless Technol.

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This paper specifies a concise review of recent research and development in the context of electromagnetic absorbers. An attempt has been made to justify the need for economical and thin microwave absorbers for achieving good absorption characteristics over a wide range of frequencies within a specified band of electromagnetic spectrum. This paper mainly focuses on the challenges encountered while designing a perfect electromagnetic absorber which can absorb electromagnetic radiations of any polarization that may appear from any direction and may occur over a broader bandwidth. The absorbers which are competent enough to withstand all these challenges are capable to suppress the reflection and transmission of unknown electromagnetic radiations efficiently to the lowest possible level. Several prospects of nanotechnology in flexible absorber design are also described to enhance absorber characteristics. This paper also provides a futuristic glimpse on several applications of such absorbers for commercial and military purposes.

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Section: Issues Of Bandwidth and Thicknessmentioning

confidence: 99%

The quest for perfect electromagnetic absorber: a review

Tirkey

Gupta

2018

Int. J. Microw. Wireless Technol.

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“…Among these applications, MTM-based absorbers (MMAs) have drawn significant interest among researchers from past decade. Since then many MMA exhibiting enhanced-bandwidth [7,8], polarisation-insensitivity [9,10], multiband [11][12][13], broadband [14,15] and wide-angle [16,17] properties have been reported from microwave to visible range [18]. Another significant property of MTM which has drawn attention in recent years is the compactness.…”

Section: Introductionmentioning

confidence: 99%

Wide‐angle and polarisation‐independent tri‐band dual‐layer microwave metamaterial absorber

Kaur

Upadhyaya

2018

IET Microwaves, Antennas & Propagation

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In this study, a novel dual‐layer wide‐angle metamaterial absorber with polarisation independence has been presented at three distinct frequencies. The proposed structure consists of dual stacked metal‐dielectric layers which are terminated by the metal ground panel. The unit cell of the presented structure consists of three concentric 8‐point star rings on the top surface of both dielectric layers exhibiting three absorption peaks of 98.96%, 98.7% and 99.43% under normal incidence at 1.8 GHz, 2.14 GHz and 2.57 GHz, respectively. The polarisation independence of the design has been validated by numerical simulation and practically verified using waveguide measurement technique. The structure displays high absorption of about 84% for transverse electric polarisation and over 97% under transverse magnetic polarisation up to 60° of oblique incidence. Furthermore, the effects of variation in physical design parameters on absorption response are investigated. The measurement exhibits good agreement with the simulated outcome. The presented structure has a thickness of 0.0294λ0 with respect to the lower absorption band frequency.

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“…Subsequently, many MMAs have been reported and investigated with the distinct characteristics from microwave to infrared bands [5,6]. MMAs of the following significant characteristics have been reported so far; dualband [7,8], triple-band [9,10], quad-band [11,12], pentaband [13], bandwidth-enhanced [14], wide-band [15,16], wide-angle [17,18] and polarization insensitivity [19,20] to accomplish various RF applications. The bandwidth of MMAs can be increased extensively by using layered resonator structures and tuned to the specified value as reported in [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Wide-Angle Ultrathin Microwave Metamaterial Absorber with Polarization Independence

Kaur

Upadhyaya

2018

AEM

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A novel dual-band wide-angle ultra-thin absorber composed of dual closed-concentric ten-point stars with polarization independence is presented in this article. The ten-point stars formed resonators are engraved on low cost FR4 substrate. The EM absorber performance is studied in terms of electrical and physical parameters. The polarization independence is practically demonstrated using waveguide measurement method. The measured results are in good agreement with simulated results. The absorbance values of 99.37% and 97.18% are achieved at 2.13 GHz and 2.52 GHz, respectively. The presented absorber design is wide-angle RF absorber with high absorbance values of about 80% up to 60° under TE mode and 87% up to 75° of oblique incidence angle for TM mode excitations. The experimental results demonstrate the absorption effectiveness of the proposed design to be utilized in RF energy harvester modules for capturing ambient UMTS band signals and in RF absorber applications for S band radar systems. The presented absorber unit cell is ultrathin and compact with the thickness and size less than λ/56 mm and λ/5 mm, respectively, at lowest absorption frequency.

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A stub-loaded reconfigurable broadband metamaterial absorber with wide-angle and polarization stability

Cited by 20 publications

References 27 publications

The quest for perfect electromagnetic absorber: a review

The quest for perfect electromagnetic absorber: a review

Wide‐angle and polarisation‐independent tri‐band dual‐layer microwave metamaterial absorber

Performance Evaluation of Wide-Angle Ultrathin Microwave Metamaterial Absorber with Polarization Independence

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