Microwave Dielectric Properties of Hevea Rubber Latex, Oil Palm Fruit and Timber and Their Application for Quality Assessment

Khalid, Kaida; Hassan, Jumiah; Abbas, Zulkifly; Hamami, M.

doi:10.1007/3-540-26491-4_20

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…In recent years, microstrip patch antenna has been gaining popularity as a new method to determine complex permittivity of materials [1][2][3][4]. The microstrip was supported on a substrate material and covered with the material under test.…”

Section: Introductionmentioning

confidence: 99%

Intercomparison of Methods for Determination of Resonant Frequency Shift of a Microstrip Patch Antenna Loaded with Hevea Rubber Latex

et al. 2014

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This paper presents an intercomparison between the finite element method, method of moment, and the variational method to determine the effect of moisture content on the resonant frequency shift of a microstrip patch loaded with wet material. The samples selected for this study were Hevea rubber latex with different percentages of moisture content from 35% to 85%. The results were compared with the measurement data in the frequency range between 1 GHz and 4 GHz. It was found that the finite element method is the most accurate among all the three computational techniques with 0.1 mean error when compared to the measured resonant frequency shift. A calibration equation was obtained to predict moisture content from the measured frequency shift with an accuracy of 2%.

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Section: Introductionmentioning

confidence: 99%