Measurement of pyramidal microwave absorbers using RCS methods

Nornikman, H.; Idris, Hasnain Abdullah; Malek, Mohd Fareq Abd; Taib, Mohd Nasir; Ali, Wan Khairuddin Wan; Soh, Ping Jack; Al‐Hadi, Azremi Abdullah; Hoon, Wee Fwen

doi:10.1109/icias.2010.5716124

Cited by 10 publications

(6 citation statements)

References 5 publications

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“…The RCS in dB is calculated when the absorber material is placed above the metallic plate. Finally, the RL is evaluated as follows [110,111] RL½dB ¼ RCS met ½dB À RCS½dB (24)…”

Section: Radar Cross Section Methodsmentioning

confidence: 99%

Theory, Modeling, Measurement, and Testing of Electromagnetic Absorbers: A Review

Abu Sanad,

Mahmud,

Ain

et al. 2023

Physica Status Solidi (a)

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In the era of the fifth generation (5G) and the Internet of Things (IoT), electromagnetic interference (EMI) poses a significant challenge. The rapid growth of wireless communication applications leads to increased electromagnetic (EM) pollution, which can have adverse health effects. To address this issue, electromagnetic absorbers (EMAs) play a critical role in eliminating EMI and reducing EM pollution between electronic devices. The focus is now on developing diverse microwave absorbing materials (MAMs) with different structures to cover a wide range of frequencies while remaining cost‐effective and effective at high angles of incidence radiation. This article comprehensively reviews EMAs, highlighting their design parameters and importance in achieving high‐efficiency absorption. The review covers absorber theory, structure, materials for various frequency ranges, and the mechanisms responsible for dissipating electromagnetic waves (EMWs). Analytical and numerical methods for modeling and analyzing EMAs are discussed, along with performance indicators and testing methods. The role of absorbers in different applications is explored, and emerging research directions for enhancing microwave absorbers are also highlighted.

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“…The RCS in dB is calculated when the absorber material is placed above the metallic plate. Finally, the RL is evaluated as follows [110,111] RL½dB ¼ RCS met ½dB À RCS½dB (24)…”

Section: Radar Cross Section Methodsmentioning

confidence: 99%

Theory, Modeling, Measurement, and Testing of Electromagnetic Absorbers: A Review

Abu Sanad,

Mahmud,

Ain

et al. 2023

Physica Status Solidi (a)

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“…The vector network analyzer is used to provide both stimulus and measurement [19]. In the present case, considering that the aim is to evaluate the reflection of metal objects in free space, the calibration is performed by measuring the resulting power reflecting off a metal plate over a wide frequency range and then over the same frequency range on a radar absorbing material (ECCOSORB HPY-60, with a reflectivity of −50 dB).…”

Section: Specimen Dimensionsmentioning

confidence: 99%

Experimental Reflection Evaluation for Attitude Monitoring of Space Orbiting Systems with NRL Arch Method

et al. 2021

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The increasing number of satellites orbiting around Earth has led to an uncontrolled increase in objects within the orbital environment. Since the beginning of the space age on 4 October 1957 (launch of Sputnik I), there have been more than 4900 space launches, leading to over 18,000 satellites and ground-trackable objects currently orbiting the Earth. For each satellite launched, several other objects are also sent into orbit, including rocket upper stages, instrument covers, and so on. Having a reliable system for tracking objects and satellites and monitoring their attitude is at present a mandatory challenge in order to prevent dangerous collisions and an increase in space debris. In this paper, the evaluation of the reflection coefficient of different shaped objects has been carried out by means of the bi-static reflection method, also known as NRL arch measurement, in order to evaluate their visibility and attitude in a wide range of frequencies (12–18 GHz). The test campaign aims to correlate the experimental measures with the hypothetical reflection properties of orbiting systems.

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“…(2) Dielectric constant is equivalent to relative permittivity (εr) or the absolute permittivity (ε) comparative with the permittivity of free space (ε 0 ) [9], [10]. The dielectric constant of a material influences on electromagnetic signals travel through the material.…”

Section: )mentioning

confidence: 99%

Effect of Slot Array at Different Angles towards the Performance of Hollow Pyramidal Microwave Absorber

2020

IJETER

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This paper presents the performance of electromagnetic wave absorption at different angles with novel slot array design implemented on hollow pyramidal microwave absorber. The size of pyramidal shaped absorber is selected to comply with the industrial standard and can operate at the frequency range between 1 GHz to 12 GHz. Initially, six designs slot array on hollow pyramidal microwave absorber are fabricated using biomass carbon. Their electromagnetic wave absorption at 0˚, 30˚ and 60˚ angles are measured to analyze their performance. The performance results show that the absorption rates are sensitive to angle of measurement.  The observation shows that the designs of slot array at S, C and X frequency bands give better absorption performance of up to 60˚. The overall results for all slot array design at different angles are analyzed and compared.

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Measurement of pyramidal microwave absorbers using RCS methods

Cited by 10 publications

References 5 publications

Theory, Modeling, Measurement, and Testing of Electromagnetic Absorbers: A Review

Theory, Modeling, Measurement, and Testing of Electromagnetic Absorbers: A Review

Experimental Reflection Evaluation for Attitude Monitoring of Space Orbiting Systems with NRL Arch Method

Effect of Slot Array at Different Angles towards the Performance of Hollow Pyramidal Microwave Absorber

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