Nurulfadzilah, Hassan and Nurul Hazlina, Noordin and Mohamad Shaiful, Abdul Karim and Mohd Ruzaimi, Mat Rejab and Ma, Quan Jin (2019) Dielectric properties of epoxy–barium titanate composite for 5 GHz microstrip antenna design. SN Applied Sciences, 2 (62). pp. 1-8. ISSN 2523-3963 (Print); 2523-3971 (Online). (Published)
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Abstract
To fulfill the demands for robust, compact microstrip antenna for wireless communication, miniaturization is necessary. To achieve this, conventional dielectric microstrip antenna substrate can be replaced with high-permittivity composite dielectric material. Epoxy–barium titanate composite has potential to be used as antenna substrate. This paper focuses on fabrication of epoxy–barium titanate composite at different filler loadings. Then, the permittivity of the composite at G-band frequencies (4–6 GHz) is measured using waveguide technique. The effect of filler concentration to permittivity is observed at 5 GHz, the intended resonant frequency of the antenna. Waveguide technique determines the complex permittivity by analyzing only the measured transmission coefficient of the material, and easily noise affected reflection coefficient is not used. The experimental results show that the permittivity of epoxy–barium titanate increases steadily as the filler volume increases. At the highest filler volume (20%), the permittivity of the composite at 5 GHz is at 6.67. The results obtained are in good agreement with theoretically predicted values.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Permittivity, Polymer–ceramic composite, Microstrip antenna, G-band frequencies, Waveguide |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Electrical and Electronic Engineering Technology Faculty of Mechanical and Automotive Engineering Technology |
| Depositing User: | Ms. Nurulfadzilah Hasan |
| Date Deposited: | 27 Aug 2024 02:02 |
| Last Modified: | 27 Aug 2024 02:02 |
| URI: | http://umpir.ump.edu.my/id/eprint/42425 |
| Download Statistic: | View Download Statistics |
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