Checkerboard Plasma Electromagnetic Surface for Wideband and Wide-Angle Bistatic Radar Cross Section Reduction

Ghayekhloo, Alireza; Afsahi, Majid; Orouji, Ali A.

doi:10.1109/tps.2017.2675282

Cited by 30 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a result, the out-of-band specular reflection could be avoided and monostatic RCS reduction is realised. However, those reflected waves would cause the bistatic RCS to increase in some directions, which would be a fatal threat to the stealthy aircraft with the development of radar detection technology [3].…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturised frequency selective rasorber using parallel LC resonators

Jiang

Zhang

Zhao³

et al. 2019

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

This study describes a method for designing miniaturised frequency selective rasorbers (FSRs) with a transmission band located between two adjacent absorption bands. The proposed FSR composes of a bandpass frequency selective surface at the bottom and an absorptive surface (APS) with lumped resistors and parallel LC resonators printed on the top. The absorptive surface is a 2.5‐dimensional geometry for the purpose of miniaturisation. The mounted parallel LC resonators mounted in the APS are utilised to implement the transmission characteristics of the proposed FSR while the constructed lumped resistors in the APS are used to realise the absorption performance. A prototype is fabricated and measured in an anechoic chamber under the guidance of a free‐space measurement system to verify this method. Experiments show that the proposed FSR has a transmission band at the centre frequency of 7.24 GHz and over the bands from 4.85 to 6.82 GHz and from 8.05 to 9.36 GHz, both reflection and transmission coefficients are less than −10 dB. The performances of the proposed FSR with different incident angles and polarisations are also investigated and results show that it is insensitive to electromagnetic wave polarisations and has a stable performance when the incident angles up to 45°.

show abstract

Section: Introductionmentioning

confidence: 99%

Design of miniaturised frequency selective rasorber using parallel LC resonators

Jiang

Zhang

Zhao³

et al. 2019

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…Moreover, there are other topology algorithms to engineer the shape of unit cell with the objective of improving frequency range. Plasma medium is integrated with metallic surfaces to realize a reconfigurable coating from numerical solutions . In which, the work is continued with an analytical procedure in ref.…”

Section: Introductionmentioning

confidence: 99%

Triangle and Aperiodic Metasurfaces for Bistatic Backscattering Engineering

Ghayekhloo

Afsahi

Orouji

et al. 2019

Physica Status Solidi (b)

Self Cite

View full text Add to dashboard Cite

Advanced electromagnetic (EM) surfaces are commonly designed to improve wave propagation and scattering. Control of EM wave scattering is one of the important venues for metasurface as an advanced surface, in which the EM surface takes place lower space than the famous metamaterial. At the same time, advanced surfaces get the same EM features as bulk metamaterials. With a new arrangement of metasurfaces and a fully characterized solution, conspicuous bistatic backscattering reduction is achieved over a wide frequency range and incidence angle interval. Closed-form equivalent electric circuit models are primarily obtained to describe the physical challenges. Triangular and aperiodic metasurfaces are characterized to increase union diffusions of returning field. To evaluate the principal models, numeric and fabrication solutions are performed. Thus, the achieved frequency bandwidth for 10 dB reduction in bistatic backscattering is 80%. Furthermore, this fractional bandwidth goes to 70% in the case of oblique incidence. The main novelty of this research versus the related state of art is the highest 10 dB reduction bandwidth for the bistatic radar-cross-section reductions with the new studied coating configurations. Meanwhile, the obtained closed-form circuit models are suitable for other applications, such as shielding and wave path redirection.

show abstract

“…Radar absorbing material, which is also known as RAM, is basically a material that has been specially designed and shaped to absorb incident microwave radiation in the radar operation frequency band [1–3]. In its early stages of development, the RAMs usually suffered from several practical problems, such as a narrow frequency band and incident angle sensitivity [4]. Hence, in the past few decades, there has been an increasing demand for high-performance RAM with wide-band and wide-angle properties for various military and civilian applications.…”

Section: Introductionmentioning

confidence: 99%

Design of graded honeycomb radar absorbing structure with wide-band and wide-angle properties

Zhao

Ren

et al. 2018

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

In this paper, the design of a graded honeycomb radar absorbing structure (RAS) is presented to realize both a wide bandwidth and absorption over a wide range of angles. For both transverse-electric and transverse-magnetic polarization, a fractional bandwidth of more than 118.6% is achieved for at least a 10 dB reflectivity reduction when the incident angle is <45°, an 8 dB reduction when the incident angle is <55° and a 5 dB reduction when the incident angle is <70°. Meanwhile the 10 dB reduction upper angle limit is approximately 30° for the uniform coating honeycomb RAS in the literature, which loses its absorbing ability when the incident angle is larger than 55°. Furthermore, the total thickness of our design is 10.7 mm, which is only approximately 1.29 times that of the theoretical limitation. The good agreement between the calculated, simulated, and measured results demonstrates the validity of this optimization.

show abstract

Checkerboard Plasma Electromagnetic Surface for Wideband and Wide-Angle Bistatic Radar Cross Section Reduction

Cited by 30 publications

References 20 publications

Design of miniaturised frequency selective rasorber using parallel LC resonators

Design of miniaturised frequency selective rasorber using parallel LC resonators

Triangle and Aperiodic Metasurfaces for Bistatic Backscattering Engineering

Design of graded honeycomb radar absorbing structure with wide-band and wide-angle properties

Contact Info

Product

Resources

About