Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications
A material description was established for oil palm empty fruit bunch (OPEFB) fibre waste for microwave absorber applications by determining its dielectric properties with respect to fibre size and frequency. The proposed OPEFB material was studied at frequencies from 1 to 4 GHz. The study was condu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2017
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| Online Access: | http://psasir.upm.edu.my/id/eprint/61435/ http://psasir.upm.edu.my/id/eprint/61435/1/Determining%20the%20complex%20permittivity%20of%20oil%20palm%20empty%20fruit%20bunch%20fibre%20material%20.pdf |
| _version_ | 1848854409091481600 |
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| author | Abdalhadi, Daw M. Abbas, Zulkifly Ahmad, Ahmad Fahad Ibrahim, Nor Azowa |
| author_facet | Abdalhadi, Daw M. Abbas, Zulkifly Ahmad, Ahmad Fahad Ibrahim, Nor Azowa |
| author_sort | Abdalhadi, Daw M. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A material description was established for oil palm empty fruit bunch (OPEFB) fibre waste for microwave absorber applications by determining its dielectric properties with respect to fibre size and frequency. The proposed OPEFB material was studied at frequencies from 1 to 4 GHz. The study was conducted using the open-ended coaxial probe (OECP) HP85071C technique. The effect of microwave frequency on complex permittivity properties for powdered OPEFB and compressed OPEFB with different particle sizes (100, 200, 300, 400, and 500 μm) were investigated. Results showed that the microwave frequency and particle size significantly influenced the complex permittivity (real and imaginary) properties of the samples. Moreover, the complex permittivity decreased as the powder fibre size increased. The complex permittivity of the smallest and largest powder fibre sizes (100 and 500 μm) were (2.050 − j 0.197) and (1.934 − j 0.137), respectively; and the complex permittivity of the smallest and largest compressed OPEFB fibre sizes (100 and 500 μm) were (3.799 − j0.603) and (3.326 − j0.486), respectively. The compressed OPEFB complex permittivity was higher than that of the OPEFB powder. |
| first_indexed | 2025-11-15T11:09:24Z |
| format | Article |
| id | upm-61435 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:09:24Z |
| publishDate | 2017 |
| publisher | North Carolina State University |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-614352018-05-23T04:02:58Z http://psasir.upm.edu.my/id/eprint/61435/ Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications Abdalhadi, Daw M. Abbas, Zulkifly Ahmad, Ahmad Fahad Ibrahim, Nor Azowa A material description was established for oil palm empty fruit bunch (OPEFB) fibre waste for microwave absorber applications by determining its dielectric properties with respect to fibre size and frequency. The proposed OPEFB material was studied at frequencies from 1 to 4 GHz. The study was conducted using the open-ended coaxial probe (OECP) HP85071C technique. The effect of microwave frequency on complex permittivity properties for powdered OPEFB and compressed OPEFB with different particle sizes (100, 200, 300, 400, and 500 μm) were investigated. Results showed that the microwave frequency and particle size significantly influenced the complex permittivity (real and imaginary) properties of the samples. Moreover, the complex permittivity decreased as the powder fibre size increased. The complex permittivity of the smallest and largest powder fibre sizes (100 and 500 μm) were (2.050 − j 0.197) and (1.934 − j 0.137), respectively; and the complex permittivity of the smallest and largest compressed OPEFB fibre sizes (100 and 500 μm) were (3.799 − j0.603) and (3.326 − j0.486), respectively. The compressed OPEFB complex permittivity was higher than that of the OPEFB powder. North Carolina State University 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/61435/1/Determining%20the%20complex%20permittivity%20of%20oil%20palm%20empty%20fruit%20bunch%20fibre%20material%20.pdf Abdalhadi, Daw M. and Abbas, Zulkifly and Ahmad, Ahmad Fahad and Ibrahim, Nor Azowa (2017) Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications. BioResources, 12 (2). 3976 - 3991. ISSN 1930-2126 http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/Biores_12_2_3976_Abdalhadi_Complex_Permittivity_Oil_Palm_Fruit_Bunch |
| spellingShingle | Abdalhadi, Daw M. Abbas, Zulkifly Ahmad, Ahmad Fahad Ibrahim, Nor Azowa Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title | Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title_full | Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title_fullStr | Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title_full_unstemmed | Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title_short | Determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| title_sort | determining the complex permittivity of oil palm empty fruit bunch fibre material by open-ended coaxial probe technique for microwave applications |
| url | http://psasir.upm.edu.my/id/eprint/61435/ http://psasir.upm.edu.my/id/eprint/61435/ http://psasir.upm.edu.my/id/eprint/61435/1/Determining%20the%20complex%20permittivity%20of%20oil%20palm%20empty%20fruit%20bunch%20fibre%20material%20.pdf |