Thin AMC Structure for Radar Cross-Section Reduction

Paquay, M.; Iriarte, Juan Carlos; Ederra, I.; Gonzalo, R.; Maagt, P. de

doi:10.1109/tap.2007.910306

Cited by 586 publications

(312 citation statements)

References 8 publications

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“…The idea behind the concept can be easily understood by turning to standard array theory [9]. The unit cell can be modeled as a 2 × 2 antenna array formed by 4 elementary antennas that are assumed to …”

Section: Pdm-ram Designmentioning

confidence: 99%

“…The principle is to reflect the EM signals away from the direction of incoming waves. A composite surface of AMC and PEC cells was proposed in [9]. The RCS reduction ability of the composite surface is based on the cancelation of reflection from the interfaces between them.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, a polarizationdependent multiband RAM (PDM-RAM) is proposed based on a combination of PDMAMC and PEC cells in a chessboard like configuration. Similar to the chessboard configuration in [9], the RAM design consists of a new type of AMC, different from the traditional ones, and is designed to satisfy the zero-phase condition at different frequencies. Measured results show good agreement with analyzed and simulated results.…”

Section: Introductionmentioning

confidence: 99%

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A Polarization-Dependent Mutiband Ram Design

Xü¹,

Cao²,

Gao³

et al. 2012

PIER Letters

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Abstract-A polarization-dependent mutiband radar absorbing material (PDM-RAM) composed of polarization-dependent multiband AMC (PDMAMC) and perfect electric conductor (PEC) cells is proposed. The PDMAMC is realized by etching a complementary split ring resonator (CSRR) on the patch of a conventional AMC. Around the two/three operational frequencies of the PDMAMC-elements for different electric field polarizations, the reflections of the PDMAMC and PEC have opposite phases, so for any normal incident plane wave the reflections cancel out. The basic principle is discussed, and a sample is measured. The results show that the proposed method is feasible and effective for the polarization-dependent multiband radar cross section (RCS) reduction.

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Section: Pdm-ram Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Polarization-Dependent Mutiband Ram Design

Xü¹,

Cao²,

Gao³

et al. 2012

PIER Letters

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“…In recent years, the MS constituted by artificial magnetic conductor (AMC) [6,7] with low radar cross section (RCS) [8][9][10] has aroused great interest of researchers due to its tremendous potential in military practice. In particular, this kind of MS merely reflects the incident waves into the backward space rather than transforming electromagnetic energy into heat, such as metamaterial absorbers [11][12][13][14][15], which lowers the probability of MS being detected by infrared devices.…”

Section: Introductionmentioning

confidence: 99%

Further Wideband RCS Reduction on Metasurface by Introducing a Phasor Interference Element

Han¹,

Cao²,

Gao³

2017

PIER C

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Abstract-A novel method for further wideband RCS reduction on metasurface (MS) is proposed in this paper. By introducing a phasor interference element to the original MS composed of two elements, RCS of the proposed MS constructed by three elements can be further remarkably decreased in broadband. The measurement procedure on scattering performances of samples is conducted in an anechoic chamber, in which the experimental results indicate that the proposed MS can achieve further 3-dB RCS reduction from 6.94 GHz to 15.35 GHz compared to the original MS, and the maximum further reduction reaches 24.9 dB. As a result, compared with a same-size metallic plate illuminated by a normal plane wave, RCS of the proposed MS can be reduced by more than 8.5-dB from 6.68 GHz to 15.38 GHz with the relative bandwidth of 78.9%.

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“…Several designs for special structures have been proposed to realize broadband RCS reduction at microwave frequencies1415161718192021. Edalati et al .…”

mentioning

confidence: 99%

Broadband and wide-angle RCS reduction using a 2-bit coding ultrathin metasurface at terahertz frequencies

Liu

Wei

Yan

et al. 2016

Sci Rep

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A novel broadband and wide-angle 2-bit coding metasurface for radar cross section (RCS) reduction is proposed and characterized at terahertz (THz) frequencies. The ultrathin metasurface is composed of four digital elements based on a metallic double cross line structure. The reflection phase difference of neighboring elements is approximately 90° over a broadband THz frequency. The mechanism of RCS reduction is achieved by optimizing the coding element sequences, which redirects the electromagnetic energies to all directions in broad frequencies. An RCS reduction of less than −10 dB bandwidth from 0.7 THz to 1.3 THz is achieved in the experimental and numerical simulations. The simulation results also show that broadband RCS reduction can be achieved at an incident angle below 60° for TE and TM polarizations under flat and curve coding metasurfaces. These results open a new approach to flexibly control THz waves and may offer widespread applications for novel THz devices.

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Thin AMC Structure for Radar Cross-Section Reduction

Cited by 586 publications

References 8 publications

A Polarization-Dependent Mutiband Ram Design

A Polarization-Dependent Mutiband Ram Design

Further Wideband RCS Reduction on Metasurface by Introducing a Phasor Interference Element

Broadband and wide-angle RCS reduction using a 2-bit coding ultrathin metasurface at terahertz frequencies

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