Abd. Rahman, Amirah and Kamardin, Kamilia and Yamada, Yoshihide (2021) Focal spot size evaluation of a focused lens in human body. In: IEEE International RF and Microwave Conference (RFM), 14 December 2020 - 16 December 2020, Kuala Lumpur, Malaysia.
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Official URL: http://dx.doi.org/10.1109/RFM50841.2020.9344740
Abstract
In hyperthermia therapy, it is significant to focus microwave to the targeted therapeutic spot as to avoid high temperature or hot spots at the surface or surrounding healthy tissues. This paper presents near-field focusing concept which is implemented using converging dielectric lens and a lambda/2 dipole at 2450MHz as a radiating element to generate small focusing spot. Lens's diameter (D-L) of 30, 50 and 70 cm have been designed and simulated in free space and inside human body equivalent phantom. The simulation results are presented and shown that larger size of DL resulted in smaller focal spot size. It is observed that electric field (E-field) intensities are increased at the focal point with larger D-L of the antenna.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | hyperthermia, microwave, focusing, lens antenna |
| Subjects: | Q Science > Q Science (General) T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Malaysia-Japan International Institute of Technology |
| ID Code: | 95981 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 01 Jul 2022 07:15 |
| Last Modified: | 01 Jul 2022 07:15 |
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