Document Type : Research Articles
Authors
Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, Iran.
Abstract
A new compact Ultra-Wide Band (UWB) arch shaped wide-slot antenna has been implemented for Microwave Imaging (MI) of breast cancer. It includes a fork-shaped strip and an arched slot ground, has a compact size of 16×20mm with a height of 1mm. The arched slot in the ground plate enhances the impedance bandwidth and the gain of the antenna. It has a bandwidth of 3.7 GHz to 18 GHz, that covers WLAN (5.4 GHz), X band (8-12 GHz), and Ku band (12-18 GHz) and having gain of 2.7 dBi to 6.3 dBi in the frequency ranges. The fidelity factor was computed for both E-plane and H-plane scenarios, indicating range of 0.922 to 0.975 for the E-plane across all angles. It has a small size, simple design, less signal distortion, a high gain of 6.3 dBi, the fractional bandwidth percentage of 131%. and efficiency of 93.7% at 6 GHz. It has reliable performances in terms of the fidelity factor at all angles compared to the most recent works. A microwave imaging simulation for breast tumor detection is performed to detect changes in the backscattering signal in the presence or absence of a tumor with a high dielectric inclusion. S11 is quite high when measured in front of the breast model and a noticeable difference in S21 exists between the scenarios with and without a tumor in the breast model. A significant variation in the transmission parameter exists across the entire frequency range, the scenarios with and without the presence of the tumor.
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Main Subjects
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