Radiation Cross Section Characteristics for Isosceles Slotted Triangle on Hollow Pyramidal Absorber

Syahmi, Ahmad; Abdullah, Hasnain; Akhbar, Rabiatuladawiah; Ahmad, N. A.; Sazalee, Nuralin Sofia; Razali, Ahmad Rashidy; Taib, Mohd Nasir

doi:10.1109/i2cacis.2018.8603697

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…It was discovered that the best absorption performance is up to -38.56 dB at frequency ranging from 11 GHz to 12 GHz [14]. Meanwhile, another studied on the effect at selective point on the microwave absorber surface with un-slotted and inverted triangle slotted has shown the best absorption performance obtain is -20.65 dB which is higher than un-slotted design [10]. Overall, it is observed that the proposed design of multiple vertical slots obtained the highest absorption performance as compared to previous designs.…”

Section: Resultsmentioning

confidence: 98%

“…In order to optimize the performance of microwave absorbers, the design must be improved at specified parameters such as high absorption, wide frequency band, lightweight and thin thickness [7]. Design improvements can be achieved by establishing slot array, multilayer structures or physically assembling of different types of absorbers [7]- [10].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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

Fazin

Razali

Taib

et al. 2022

IJEECS

View full text Add to dashboard Cite

show abstract

“…[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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Investigation of different graphite morphologies for microwave absorption at X and Ku-band frequency range

Batista

Oliveira

Rodrigues

et al. 2020

J Mater Sci: Mater Electron

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Radiation Cross Section Characteristics for Isosceles Slotted Triangle on Hollow Pyramidal Absorber

Cited by 3 publications

References 4 publications

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

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

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

Investigation of different graphite morphologies for microwave absorption at X and Ku-band frequency range

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