Nur Hazimah Syazana, Abdul Razak and Nur Shahira, Mat Hussain and Nurul Hazlina, Noordin and Syamimi Mardiah, Shaharum and Ahmad Syahiman, Mohd Shah and Mohamad Shaiful, Abdul Karim (2021) Flat lens design using phase correction technique for horn antenna applications. Telkomnika, 19 (1). 213 -219. ISSN 1693-6930. (Published)
|
Pdf (Open access)
Flat lens design using phase correction technique for horn.pdf Available under License Creative Commons Attribution Share Alike. Download (877kB) | Preview |
Abstract
A design of a flat dielectric lens is presented in this study to enhance directivity of a pyramidal horn antenna. The horn antenna is proposed to cover frequency of medical imaging system, which is between 5 and 6 GHz, and dielectric lens is designed based on phase correction techniques. The spherical waves produced by conventional horn antenna is being transform to planar waves by resorting flat lens in order to achieve a highly directive radiation in the farfield region. This is done by drilling numerous holes with different diameters through the dielectric material to produce different phase delay. The radiation characteristics of the lens are simulated using CST Microwave Studio and then compared with measured results. The results showed a good performance for radiation pattern when the lens is attached. This proposed design shows a significant increment of sidelobe level and 3-dB beamwidth between 5 and 6 GHz.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Dielectic materials; Flat lens; Horn antenna; Medical imaging system; Phase correction techniques |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Institute of Postgraduate Studies College of Engineering Faculty of Electrical and Electronic Engineering Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 26 Jul 2021 14:01 |
| Last Modified: | 26 Jul 2021 14:01 |
| URI: | http://umpir.ump.edu.my/id/eprint/31708 |
| Download Statistic: | View Download Statistics |
Actions (login required)
 |
View Item |