Intercomparison of Methods for Determination of Resonant Frequency Shift of a Microstrip Patch Antenna Loaded with Hevea Rubber Latex. (3rd August 2014)

• Record Type: Journal Article
• Authors: Yahaya, Nor Zakiah; Abbas, Zulkifly; Ali, Borhanuddin Mohd; Ismail, Alif; Ansarudin, Farizah
• Other Names: Matias Ignacio R. Academic Editor.
• Is Part Of: Journal of sensors. Volume 2014(2014)
• Publication Date: 2014-08-03
• Subjects: Detectors -- Periodicals; 681.205
• DOI: 10.1155/2014/656972
• Languages: English
• ISSNs: 1687-725X

Abstract

Abstract : 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%.