Slotted triangle on hollow pyramidal microwave absorber characteristics

Yusof, A. P. M.; Abdullah, Hasnain; Fauzi, Najwa Rawaida Ahmad Ahmad; Ismail, Noraini; Razali, Ahmad Rashidy; Ahmad, Ausaf; Taib, Mohd Nasir; Azmin, Azwati; Kasim, Nazirah Mohamat; Mozi, Aiza Mahyuni

doi:10.1109/iccsce.2016.7893639

Cited by 5 publications

(4 citation statements)

References 12 publications

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“…The absorber should be designed to be a minimum of a quarter of the wavelength or more to be effective. [75] The third option is to configure the surface geometry, which refers to the regularity of the surface. The general principle that guides the configuration of the surface significantly impacts performance.…”

Section: Design and Parameters Of Electromagnetic Absorbers 61 Design...mentioning

confidence: 99%

See 1 more Smart Citation

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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Section: Design and Parameters Of Electromagnetic Absorbers 61 Design...mentioning

confidence: 99%

“…The absorber should be designed to be a minimum of a quarter of the wavelength or more to be effective. [ 75 ]…”

Section: Design and Parameters Of Electromagnetic Absorbersmentioning

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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“…[13]- [16]. This has encouraged the researchers to identify and research the design of the slot array antenna implementation on the hollow pyramidal absorber [17]- [19]. In this paper, slot array is invented to the hollow pyramidal microwave absorbers.…”

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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“…The common way of fulfilling the impedance requirement is to adjust the permittivity and permeability values to be closed to each other. The absorbing performances can also be improved by modifying the absorber design using various approaches such as slot array, multi-layer gradient structure, periodic structure and others [9], [11], [17].…”

Section: Introductionmentioning

confidence: 99%

Absorption performance of biomass hollow pyramidal microwave absorber using multi-slot array technique

Fazin

Razali

Taib

et al. 2022

IJEECS

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<span>Electromagnetic interference (EMI) is an undesired electromagnetic (EM) wave by nearby electronic devices, process equipment, and measuring instruments. In this work, a novel multi-slot technique is applied to the hollow biomass pyramidal microwave absorber to study its absorption properties thoroughly. Two different slot arrangements in horizontal and vertical configuration are designed for the proposed microwave absorbers. Both slot design concepts have identical shape and size. This work aims to study, compare and analyze the absorption performance of the proposed designs at L, S, C and X frequency bands. The biomass material is used to form as absorbent material. The characteristics performance of the multi-slot design on biomass hollow pyramidal microwave absorbers are measured by using naval research laboratory (NRL) Arch space-free method. The frequency range set up for the measurement is in between 1 GHz to 12 GHz. The multi-vertical slots design exhibits better absorption performance at <br /> C-band and X-band which is -63.67 dB and -46.78 dB respectively while the multi-horizontal slots design provides better absorption performance at <br /> S-band which is -16.92 dB. The results shows that both design performances are frequency-dependent since horizontal slots design improve maximum absorption performance at low frequency while vertical slots design delivers better performance at high frequency. </span>

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Slotted triangle on hollow pyramidal microwave absorber characteristics

Cited by 5 publications

References 12 publications

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

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

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

Absorption performance of biomass hollow pyramidal microwave absorber using multi-slot array technique

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