Thin absorbers using space-filling-curve high-impedance surfaces

McVay, J.; Hoorfar, Ahmad; Engheta, Nader

doi:10.1109/aps.2005.1551723

Cited by 22 publications

(25 citation statements)

References 3 publications

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“…MMs have many types in practice, such as high impedance surface (HIS) [5], artificial magnetic conductor (AMC) [6], electromagnetic band-gap (EBG) [7] and left-handed metamaterial (LHM) [8]. However, most of these papers utilize MMs' high-impedance characteristic, and the bandwidths in these papers are still narrow for their resonance bandwidths [9][10][11]. To achieve broadband absorber screen, the active devices such as pin diodes are inserted in the metal patches joint of the periodic unit [12], which can be varied with an applied electrical or optical control signal to realize active or adaptive performance.…”

Section: Introductionmentioning

confidence: 99%

An Novel Absorber Screen Design Method Based on Receiving Antenna Principle

Song¹,

Tang²,

Yuan³

et al. 2016

PIER C

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Abstract-This paper presents a novel design method to the absorber screen based on the receiving antenna technique. When the electromagnetic waves is incident upon the surface of absorbing structure, part of the electromagnetic energy transforms into current absorbed at the port, and the remaining energy is reflected. The former mechanism is similar to the receiving antenna. Hence, a dual-polarized magneto-electric dipole antenna is selected and optimized to obtain a broadband absorber screen unit after comparing the similarities between the antenna and absorber. The measurement results show that the finite 6 × 6 array absorber has a 73% bandwidth for 10 dB RCS reduction, while its thickness of substrate is below 1/9 wavelength of the center frequency in free space. The novel absorber screen can also be used in dual polarization because of its symmetrical property. The simulation and measurement are performed at the normal incidence in this paper.

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Section: Introductionmentioning

confidence: 99%

An Novel Absorber Screen Design Method Based on Receiving Antenna Principle

Song¹,

Tang²,

Yuan³

et al. 2016

PIER C

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“…A Hilbert curve behaves as an electric dipole [18], acting as a capacitive element below its resonance, and therefore could be used to construct thin absorbers [5]. Advantage of a Hilbert curve or other space filling curves for that matter over conventional capacitive sheet structures is that they can provide resonance at lower frequency with smaller physical foot print [17].…”

mentioning

confidence: 99%

“…Recently Hilbert curve array as a high impedance surface and a thin radar absorber has been reported [5,7,17]. A thin metamaterial absorber consists of a capacitive sheet, together with resistive/lossy elements.…”

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confidence: 99%

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Study of Wideband, Wide Angle, Polarization Independent Metamaterial Hilbert Curve Absorbing Screen for Terahertz Bolometers

Noor

2010

J Infrared Milli Terahz Waves

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A wideband, wide angle metamaterial Hilbert curve array terahertz absorbing screen is reported. The absorber consists of array of an Aluminum first order Hilbert curve array over a copper ground plane separated by dielectric spacer. 100% fractional bandwidth (-3dB absorption bandwidth) for normal incidence and more than 90% in case of oblique incidence of 45°and 60°for both TE and TM polarizations have been verified numerically. The operating bandwidth of the structure proposed here is several times of those reported to date. Peak absorption is 98% for normal incidence and more than 86% for 60°angle of incidence for either polarization. Furthermore, effects of variations in Hilbert curve dimensions, spacer thickness, spacer permittivity and ground plane conductivity are also investigated. The structure is shown to have high tolerance to variations in the aforementioned parameters.

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“…Thin absorbers employing metallic FSS loaded with lumped resistors have been proposed [3]. However, the bandwidths of designed absorbers in these papers are all very narrow [4]. In order to get radar absorbers which present both thin and wideband characteristics, tremendous efforts have been devoted to improving the performance of radar absorbing materials (RAM).…”

Section: Introductionmentioning

confidence: 99%

Optimal design of non-magnetic metamaterial absorbers using visualization method

Wang

Tang

et al. 2014

IEICE Electron. Express

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This paper presents a design of thin and broadband non-magnetic metamaterial absorbers using circular loop shaped resistive frequency selective surfaces (FSS). A straightforward visual graphic representation analysis which extends the microwave impedance matching theory into wideband metamaterial absorbing structure design is carried out on the key parameters analysis of the absorbers. Absorbers with different layers are analyzed. Numerical computing results are in good agreement with the analyzed ones. The study shows that visual graphic representation analysis could greatly decrease the range of variable. The visualization method is simple and practicable to introduce the working principles of the wideband non-magnetic metamaterial absorbing structure and to derive the best-suited element for wideband absorption.

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Thin absorbers using space-filling-curve high-impedance surfaces

Cited by 22 publications

References 3 publications

An Novel Absorber Screen Design Method Based on Receiving Antenna Principle

An Novel Absorber Screen Design Method Based on Receiving Antenna Principle

Study of Wideband, Wide Angle, Polarization Independent Metamaterial Hilbert Curve Absorbing Screen for Terahertz Bolometers

Optimal design of non-magnetic metamaterial absorbers using visualization method

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