The Use of Dielectric Mixture Equations to Analyze the Dielectric Properties of a Mixture of Rubber Tire Dust and Rice Husks in a Microwave Absorber

Cheng, E. M.; Malek, F.; Ahmed, Manjur; You, Kok Yeow; Lee, Kim Yee; Nornikman, H.

doi:10.2528/pier12050312

Cited by 23 publications

(22 citation statements)

References 30 publications

(37 reference statements)

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“…The detailed discussion regarding the design, analysis and physical realization of desired material parameters are reported in [2,5,[10][11][12][13]. The interaction of EM waves with the material is characterized by its constitutive parameters viz.…”

Section: Synthesis Of Dielectric Absorbermentioning

confidence: 99%

Square Patch-Based Dielectric Microwave Absorber

Bhati¹,

Hiremath²,

Dixit³

2018

PIER M

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Abstract-The work presents a simple and novel design approach to extend the bandwidth of existing Dielectric Material Based Microwave Absorber (DMBMA). The design comprises planar square patches of DMBMA placed periodically on a metalbacked FR4 sheet. For demonstration purpose, the DMBMA is synthesized by adding conducting carbon fillers in polyurethane matrix, and its electromagnetic parameters are measured in X-band. A single reflection null is observed in DMBMA owing to λ/4 resonance. In comparison, the bandwidth of 8 GHz (10-18 GHz) is achieved for −10 dB reflection for square patch based DMBMA. The thickness of proposed absorber is 2.75 mm. An additional resonant mode is observed due to capacitive coupling between the square patches. The enhanced bandwidth is attributed to the overlapping of λ/4 resonance and induced coupling mode. A good agreement between the simulated and measured data is observed.

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Section: Synthesis Of Dielectric Absorbermentioning

confidence: 99%

Square Patch-Based Dielectric Microwave Absorber

Bhati¹,

Hiremath²,

Dixit³

2018

PIER M

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“…The source signal is the starting point of the signal before transmission occurs. The distance between the pyramidal microwave absorber and the source of the signal source (port), Z pos , was 50 cm [32][33][34][35][36][37].…”

Section: Methodsmentioning

confidence: 99%

Development of Pyramidal Microwave Absorber Using Sugar Cane Bagasse (Scb)

Zahid¹,

Malek²,

Nornikman³

et al. 2013

PIER

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Abstract-The need to find ways to effectively utilize the large quantities of agricultural waste that are produced is indicative of the huge potential associated with producing an alternative pyramidal microwave absorber for anechoic chamber-testing applications. We propose the development of a pyramidal microwave absorber that can use sugar cane bagasse (SCB), a byproduct from the production and processing of sugar cane, as the absorbent. In this paper, we report the results of our use of dielectric probe measurement to determine the dielectric constant and loss tangent of SCB. These values were used to model and simulate an SCB pyramidal microwave absorber in Computer Simulation Technology's (CST's) Microwave Studio. This absorber was operated in the microwave frequency range between 0.1 GHz and 20.0 GHz.

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“…Such environmental pollution would be reduced if the rice husks were used in other applications rather than burned. Recently, several research projects involving rice husks have shown that the properties of rice husks make this waste material potentially useful as a microwave absorber and for other applications [2][3][4][5][6]. This is because 35-37% of the rice husks is carbon, which has the ability to attenuate/absorb microwave radiation [5].…”

Section: Introductionmentioning

confidence: 99%

“…This is because 35-37% of the rice husks is carbon, which has the ability to attenuate/absorb microwave radiation [5]. Several researchers have stated that carbon has an important role in microwave absorption [2][3][4][5][6]. Figure 1 shows the physical look of rice husk and CNTs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of the Performance of Rice Husk-Carbon Nanotube Composites for Absorbing Microwave Signals in the Frequency Range of 12.4-18 GHZ

Lee¹,

Malek²,

Cheng³

et al. 2013

PIER

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Abstract-Composites of rice husks and carbon nanotubes (RHCNTs) are an innovation in improving the absorption of microwave signals. Rice husks, which are an agricultural waste material, have been found to possess a significant propensity for absorbing microwave signals. Studies have shown that both rice husks and carbon nanotubes (CNTs) have high percentages of carbon. Thus, in this paper, we present the results of our experimental study in which we varied the ratios of rice husks and CNTs in the composite materials and determined the dielectric properties of the composites and measured their abilities to absorb microwave signals. The experimental microwave

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The Use of Dielectric Mixture Equations to Analyze the Dielectric Properties of a Mixture of Rubber Tire Dust and Rice Husks in a Microwave Absorber

Cited by 23 publications

References 30 publications

Square Patch-Based Dielectric Microwave Absorber

Square Patch-Based Dielectric Microwave Absorber

Development of Pyramidal Microwave Absorber Using Sugar Cane Bagasse (Scb)

Experimental Determination of the Performance of Rice Husk-Carbon Nanotube Composites for Absorbing Microwave Signals in the Frequency Range of 12.4-18 GHZ

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