Broadband RCS Reduction of Antenna with AMC Using Gradually Concentric Ring Arrangement

Wang, Fuwei; Ren, Yuhui; Li, Ké

doi:10.1155/2017/1268947

Cited by 8 publications

(6 citation statements)

References 11 publications

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“…16 For accomplishing the wideband RCS reduction in Iriarte Galarregui et al, 17 the PEC and AMC were replaced by two different AMCs. Other techniques of RCS include the use of electromagnetic band-gap (EBG) structure, 18 gradually concentric ring arrangement, 19 lefthanded material, 20 reconfigurable FSS, 21 and use of split-ring resonators (SRR). 22 However wideband RCS reduction was achieved using these techniques, the radiation performance was not preserved.…”

Section: Introductionmentioning

confidence: 99%

Wideband radar cross section reduction of a circularly polarized antenna using polarization conversion metasurfaces

Rahman

Deng

et al. 2023

Micro & Optical Tech Letters

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In this study, a technique for designing a compact and low radar cross section (RCS) circularly polarized (CP) antenna is proposed. The designed CP antenna resonates at 8.7 GHz. The circular polarization is achieved by trimming opposite corners of the square patch and etching out thin slots. A new method is used to keep the radiation performance well preserved and to reduce the RCS of the CP antenna by employing polarization conversion metasurfaces. The PCM comprises double‐head arrow elements arranged around the CP antenna in four quadrants. Wideband monostatic RCS reduction is achieved for frequencies from 8.0 to 20 GHz. The experimental results verify the simulated ones, and also, the performance parameters such are realized gain, impedance bandwidth, axial ratio, and radiation pattern are well preserved after loading polarization conversion metasurface.

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Section: Introductionmentioning

confidence: 99%

Wideband radar cross section reduction of a circularly polarized antenna using polarization conversion metasurfaces

Rahman

Deng

et al. 2023

Micro & Optical Tech Letters

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“…Radar cross section (RCS) is a measure for the strength of electromagnetic (EM) fields scattered by targets and reducing the RCS as much as possible is the basic requirement for designing stealth targets [1]. With the significant development of radar techniques since World War II, reducing the RCS of targets has become a passive and indispensable technique for reducing the detectability of targets [2] and has been eagerly needed in military applications or even in some civilian applications [3]. Generally, there are four categories of techniques for reducing the RCS, i.e., design of geometric shape, coating of microwave absorbing material, passive cancelation, and active cancelation [4].…”

Section: Introductionmentioning

confidence: 99%

A Novel Design of Microwave Absorbers Based on Multilayered Composite Materials for Reduction of Radar Cross Section

2022

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Reduction of radar cross section (RCS) for targets can be achieved by different approaches and coating absorbing materials at the surfaces of targets is one of widely used methods because of its flexibility and good effect. In the work, we put forward a novel method of reducing the RCS based on the design of multilayer composite absorbing materials. The transmission line theory and particle swarm optimization (PSO) are used to guide the design and analysis, and two kinds of designs, i.e., Type IV and Type VII, are selected finally. Simulation experiments show that the designs are insensitive to the incident angles and polarizations of incident EM wave, which is required for being coated at the surfaces of real objects. Also, the designed absorbing materials are very thin and have an ultra-wide frequency band. The bandwidth of Type-IV design can reach 14.6314.63 GHz, ranging from 3.373.37 to 18.018.0 GHz, while Type-VII design can cover the frequency range from 2.02.0 to 18.018.0 GHz, which represents the major part of radar’s frequency range. The designed absorbing materials are coated at the surface of a perfectly-electric-conducting (PEC) cylinder to validate the effectiveness of the materials, and good results have been obtained.

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“…Many different approaches have been presented for RCS reductions such as frequency selective surfaces (FSS) [8][9][10], metasurfaces [11][12][13][14], partially reflecting surfaces [15], electromagnetic bang gap (EBG) structures [16], and artificial magnetic conductor [17,18]. Different authors have presented parasitic stubs or slots openings in the antenna structure or in the antenna ground plane to control in band RCS [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Bistatic RCS Control on Slot-sinuous Antenna by Adding 3 and 5 Parasitic Ellipses Openings

Agastra¹,

Biberaj²,

Shurdi³

et al. 2022

PIER M

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In this paper, an ultra-wide band modified slot-sinuous antenna has been designed to enhance bistatic radar cross section (RCS) response. The design procedure consists of adding three or five parasitic ellipses openings to each of the slot-sinuous arm cells. The parasitic ellipsis allows to control bistatic RCS without impacting antenna radiation characteristics. Parasitic ellipses opening dimensions are small compared to the relative wavelength of the signal on each active region of the antenna. The ellipses distributed on sinuous antenna arm are scaled by the same expansion coefficient used to design the antenna itself. In the proposed design, ellipses parameters such as ellipses axis, radial position, and relative angle position on the sinuous cell are key parameters to be optimized for bistatic RCS reduction. The total number of designing parameters is finite, but their combination is infinite, which leads to the possibility of designing different antennas based on the required designing goals. The proposed solution and the results presented in this work show the applicability of the designing parameters to control bistatic RCS on active region antennas.

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Broadband RCS Reduction of Antenna with AMC Using Gradually Concentric Ring Arrangement

Cited by 8 publications

References 11 publications

Wideband radar cross section reduction of a circularly polarized antenna using polarization conversion metasurfaces

Wideband radar cross section reduction of a circularly polarized antenna using polarization conversion metasurfaces

A Novel Design of Microwave Absorbers Based on Multilayered Composite Materials for Reduction of Radar Cross Section

Bistatic RCS Control on Slot-sinuous Antenna by Adding 3 and 5 Parasitic Ellipses Openings

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