Ultra-wideband metamaterial absorber using three-layer ring and patch resonators

Ma, Suman; Hou, Xi; Yang, Yihang; Yu, Tang

doi:10.1109/ieee-iws.2018.8401008

Cited by 14 publications

(2 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wideband RCS reduction of an MSA working at 2.5 GHz is achieved by replacing the solid metal ground with 2.5D FSS [10] and using an absorptive FSS‐based radome [11] for out‐of‐band EM waves. Wideband absorption can be achieved by using multiple layers consisting of patch and ring resonators [12], slotted metal loops [13] or graphene‐based non‐periodic metallic patch [14]. A dual polarised [15] absorptive frequency‐selective rasorber is constructed by meander line square loops with and without lumped resistors loaded on the substrate.…”

Section: Introductionmentioning

confidence: 99%

RCS reduction of microstrip antenna using split square loop thin absorber

Das

Mandal

2020

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

RCS reduction of microstrip antenna using split square loop thin absorber

Das

Mandal

2020

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

“…Metamaterials have been a burgeoning field of research in recent years, with many new developments such as reconfigurable designs [84] capable of live absorption spectrum switching [85], wideband designs [86] with bandwidths in the region of 30GHz [87], and multi-band [88] absorber designs with as many as 4 [89] absorption bands, as well as many other applications such as negative refraction and subwavelength resolution. In addition to a variety of different metamaterial absorber designs, a metamaterial cloak has been presented [90], which functions as a planar waveguide in order to guide electromagnetic radiation around the object contained within the cloaking structure.…”

Section: The Substrate Capacitancementioning

confidence: 99%

Investigation of Radar Signal Interaction with Crossflow Turbine for Aviation Application

Litov¹

View full text Add to dashboard Cite

The increased adoption of wind energy is an important part of the push towards a net zero-emission economy. One obstacle that stands in the way of a higher rate of wind energy adoption is the interference that wind turbines cause to nearby radar installations. Wind turbines negatively affect the performance of nearby radar sites in a variety of different ways. Almost all types of radar are affected in at least one of these ways.In order to understand the degree to which an object such as a wind turbine interacts with radar, it is important to have detailed radar cross section (RCS) data for the object. In this work, a novel, low-cost, scale model radar cross section characterization system is presented with various advantages over traditional designs. This system was used to characterize the RCS of the novel Crossflow wind turbine. Additionally, work has been carried out on the characterization of metamaterial absorber coatings that can be applied to new and existing turbines for the purposes of reducing their radar cross section and the degree to which they cause radar inter-ference. The works presented can be leveraged to reduce concerns around radar interference from wind turbines, as well as to iteratively generate ge-ometries with lower radar cross sections for the aviation and infrastructure sectors, ultimately accelerating the pace of wind energy adoption and the move towards a net zero-emission economy.

show abstract

Broadband polarization insensitive wide angular stable dual‐split square ring circuit analog absorber for radar cross section and electromagnetic interference shielding applications

Shukoor

Dey

Koul

2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

This work presents a simple broadband polarization-insensitive circuit analog absorber (CAA) with wide angular stability. It comprises of dual-cut square loop resonator loaded with eight lumped resistors as top patch and an inductive grid. The normal incidence reveals a 90% absorption bandwidth of 20.51 GHz (110% fractional bandwidth) covering the entire X to K-band with a minimum flat absorption rate of 92.82%. Equivalent circuit analysis is carried out, and responses are validated with full-wave simulations. The proposed prototype is insensitive to different polarization angles under normal incidence and stable with 45 in transverse electric (TE) and transverse magnetic (TM) incidences. The design's novelty lies in using two resistors on each side of the square ring, which improves the absorptivity performance. The inductive grid enhances TM mode's angular stability. The proposed absorber is fabricated, and the measured results are in good agreement. In-band bistatic radar cross section reduction of 12.97 dBsm is obtained with the absorber using an X-band antenna. The temperature profile of the prototype is illustrated using near-in-lock infrared thermography, and 2.1 F of temperature rise is noticed in the absorption band. The proposed structure possesses a low profile, broad bandwidth, polarization insensitivity, and wide angular stability to the best of the author's knowledge.absorber, broadband, IR imaging, lumped resistor, radar cross section | INTRODUCTIONElectromagnetic (EM) wave absorption has gained significance in applications like RF energy harvesting, photodetectors, micro-bolometers, biological image sensing, EM shielding, and radar cross section (RCS) reduction in stealth technology. 1 Salisbury screen was the first traditional microwave absorber, 2 consisting of a flat resistive sheet coated on a λ g =4 ground dielectric spacer. Dependence of effective impedance on substrate thickness confines Salisbury screen to a narrow band. Jaumann absorber, 3 where stacking of different resistive on λ g =4 spacers was proposed for uniform absorption over a wideband. However, the physical size of the Jaumann screen is limiting its usage. Earlier, the EM wave absorption were also focused on pyramidal foam absorbers, carbon

show abstract

Ultra-wideband metamaterial absorber using three-layer ring and patch resonators

Cited by 14 publications

References 9 publications

RCS reduction of microstrip antenna using split square loop thin absorber

RCS reduction of microstrip antenna using split square loop thin absorber

Investigation of Radar Signal Interaction with Crossflow Turbine for Aviation Application

Broadband polarization insensitive wide angular stable dual‐split square ring circuit analog absorber for radar cross section and electromagnetic interference shielding applications

Contact Info

Product

Resources

About