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An UWB Vivaldi Antenna structure is presented and analyzed for tumor detection of brain cancer. Various antenna configurations are considered in this analysis. The radiation is investigated inside a human head phantom with a tumor model. The antenna is designed with FR-4 substrate, and is tested when immersed in background of relative permittivity 40 to achieve good matching with the head tissue....
An antipodal Vivaldi antenna is developed for hyperthermia treatment of brain tumor. The proposed antenna has overall size 82×94×1.6mm. The return loss parameter is less −10 dB starting from 0.1 GHz, range, when immersed in brain simulating liquid. The paper presents optimization of array structure to focus energy in the intended tumor location. Results indicate that the presented structure is promising...
Nanoparticles have the potential to enhance energy localization in hyperthermia treatment. The use of nanoparticles allow the control of the electrical properties of tumors. Investigation is provided of the effect of material properties on the specific absorption rate (SAR) inside the tumor at various frequency values. Computational analysis is performed under SEMCAD X environment, considering an...
In this paper, balanced antipodal Vivaldi antenna is developed for microwave imaging applications. The proposed antenna has overall size 94×64×9.14 mm, and operates at frequency values from 500 MHz. The antenna thus allows good penetration in human tissue and provides a small foot-print on the imaged object. The paper presents optimization of the developed antenna. Investigation of the background...
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