Characteristic of biomass percentage in cement brick composites microwave absorber

Kharber, Nadrah Nur; Damit, Dayang Suhaida Awang; Abdullah, Hasnain; Ali, Fatimah Zaharah; Kasim, Nazirah Mohamat; Razali, Ahmad Rashidy; Rahim, N. A. A.; Endut, Mohd Zaini; Taib, Mohd Nasir

doi:10.1109/iceese.2017.8298390

Cited by 1 publication

(2 citation statements)

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“…Apart from that, the dielectric loss factor, indicated by the term ɛr′′, represents the dissipated electric energy in the material. The increasing frequency of losses due to dielectric breakdown is mainly produced by dipolar polarisation with interfacial polarisation while operating in the microwave range [3], [11]. The average measurement of the sample material's dielectric properties over 0.7 GHz to 30 GHz is shown in Table Ⅰ.…”

Section: Design and Simulationmentioning

confidence: 99%

“…Electromagnetic interference (EMI) and electromagnetic compatibility (EMC) tests in antenna measurement setup are examples of applications where microwave absorbers are theoretically applied to minimize unwanted radiation that could interfere with the operation of equipment systems [2]. Microwave absorbers must be designed with the magnitude, phase for various angles, perpendicular polarization, and absorption Investigate the Effect of Dielectric Properties on Microwave Absorption of Pyramidal Microwave Absorber reflection loss, all considered in the parameters [3]. Pyramidal absorbers, truncated pyramidal absorbers, wedge absorbers, convoluted absorbers, hybrid absorbers, flat, hollow pyramidal absorbers, oblique, metamaterial absorbers, and other shapes can all do make as absorbers.…”

Section: Introductionmentioning

confidence: 99%

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Investigate the Effect of Dielectric Properties on Microwave Absorption of Pyramidal Microwave Absorber

Vagananthan

Lee

You

et al. 2022

J. Microw. Optoelectron. Electromagn. Appl.

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This paper presents an analysis of the impact of various dielectric properties material's effects on broadband pyramidal microwave absorbers (PMA). The Computer Simulation Technology (CST) studio software simulates and analyzes the PMA over 0.7 GHz to 30 GHz frequency range. To achieve the best reflectivity performance of the PMA, different types of dielectric materials and the thickness of the base layers were analyzed and investigated. The average of four types of sample materials studied, the reflectivity level is between -50 dB and -27 dB for the desired range of frequency, 0.7 GHz to 30 GHz. The sample-4 material has a dielectric constant of 3.83, and a loss tangent of 1.52 has the best microwave absorption, absorbing microwaves above -48 dB over the frequency range of 0.7 GHz to 30 GHz. Because of its microwave absorption capability, sample-4 could be used in a microwave pyramidal absorber.

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Section: Design and Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%