{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,1]],"date-time":"2025-11-01T21:40:20Z","timestamp":1762033220022},"reference-count":20,"publisher":"Hindawi Limited","license":[{"start":{"date-parts":[[2014,1,1]],"date-time":"2014-01-01T00:00:00Z","timestamp":1388534400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"funder":[{"name":"Ministry of Science, Technology and Innovation"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Sensors"],"published-print":{"date-parts":[[2014]]},"abstract":"<jats:p>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\u2009GHz and 4\u2009GHz. 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%.<\/jats:p>","DOI":"10.1155\/2014\/656972","type":"journal-article","created":{"date-parts":[[2014,8,3]],"date-time":"2014-08-03T17:02:54Z","timestamp":1407085374000},"page":"1-9","source":"Crossref","is-referenced-by-count":11,"title":["Intercomparison of Methods for Determination of Resonant Frequency Shift of a Microstrip Patch Antenna Loaded with Hevea Rubber Latex"],"prefix":"10.1155","volume":"2014","author":[{"given":"Nor Zakiah","family":"Yahaya","sequence":"first","affiliation":[{"name":"School of Physics, Universiti Sains Malaysia (USM), 11800 Pulau Pinang, Malaysia"}]},{"given":"Zulkifly","family":"Abbas","sequence":"additional","affiliation":[{"name":"Department of Physics, Faculty of Science, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia"},{"name":"Institute for Mathematical Research, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia"}]},{"given":"Borhanuddin Mohd","family":"Ali","sequence":"additional","affiliation":[{"name":"Department of Computer and Communications System Engineering, Faculty of Engineering, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia"}]},{"given":"Alif","family":"Ismail","sequence":"additional","affiliation":[{"name":"Department of Physics, Faculty of Science, Universiti Putra Malaysia (UPM), 43400 Serdang, Selangor Darul Ehsan, Malaysia"}]},{"given":"Farizah","family":"Ansarudin","sequence":"additional","affiliation":[{"name":"Department of Electrical, Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia"}]}],"member":"98","reference":[{"key":"1","doi-asserted-by":"publisher","DOI":"10.1007\/3-540-26491-4_20"},{"issue":"3","key":"2","volume":"5","year":"2005","journal-title":"Measurement Science Review"},{"key":"4","doi-asserted-by":"publisher","DOI":"10.2528\/PIERL09021401"},{"issue":"2","key":"5","doi-asserted-by":"crossref","first-page":"104","DOI":"10.1109\/TMTT.1980.1130018","volume":"28","year":"1980","journal-title":"IEEE Transactions on Microwave Theory and Techniques"},{"issue":"4","key":"6","doi-asserted-by":"crossref","first-page":"251","DOI":"10.1109\/TMTT.1968.1126658","volume":"16","year":"1968","journal-title":"IEEE Transactions on Microwave Theory and Techniques"},{"key":"7","year":"2006"},{"issue":"1","key":"8","doi-asserted-by":"crossref","first-page":"47","DOI":"10.1109\/TAP.1981.1142532","volume":"29","year":"1981","journal-title":"IEEE Transactions on Antennas and Propagation"},{"key":"9","doi-asserted-by":"publisher","DOI":"10.1109\/19.676718"},{"key":"10","doi-asserted-by":"publisher","DOI":"10.1016\/0260-8774(94)00063-F"},{"key":"11","doi-asserted-by":"publisher","DOI":"10.13031\/2013.3010"},{"issue":"2","key":"12","doi-asserted-by":"crossref","first-page":"104","DOI":"10.17221\/1000-RAE","volume":"54","year":"2008","journal-title":"Research in Agricultural Engineering"},{"key":"13","doi-asserted-by":"publisher","DOI":"10.1063\/1.322825"},{"key":"14","year":"2005"},{"key":"16","volume-title":"Method of measuring the dry rubber content of field latex","volume":"63","year":"1979"},{"key":"17","series-title":"Application Note","year":"2005"},{"key":"18","doi-asserted-by":"publisher","DOI":"10.2478\/v10048-010-0002-x"},{"key":"19","year":"1989"},{"key":"20","first-page":"329","volume-title":"Electrical properties of foods","year":"1986"},{"key":"21","year":"1993"},{"key":"22","doi-asserted-by":"publisher","DOI":"10.1016\/j.biosystemseng.2004.01.007"}],"container-title":["Journal of Sensors"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2014\/656972.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2014\/656972.xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/downloads.hindawi.com\/journals\/js\/2014\/656972.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,8,13]],"date-time":"2019-08-13T10:14:56Z","timestamp":1565691296000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.hindawi.com\/journals\/js\/2014\/656972\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2014]]},"references-count":20,"alternative-id":["656972","656972"],"URL":"https:\/\/doi.org\/10.1155\/2014\/656972","relation":{},"ISSN":["1687-725X","1687-7268"],"issn-type":[{"value":"1687-725X","type":"print"},{"value":"1687-7268","type":"electronic"}],"subject":[],"published":{"date-parts":[[2014]]}}}