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Microstrip Antenna for Radar-Based Microwave Imaging of Breast Cancer: Simulation Analysis

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The paper proposes a radar-based microwave imaging system for breast cancer detection by using a simple and effective design of a wideband microstrip patch antenna. Breast cancer is the second-highest cause of death among women worldwide and the only way to provide an effective treatment is to detect it at an early stage. Microwave imaging (MI) provides a safer and cheaper detection method as it uses low-level non-ionizing radiation. A compact wideband microstrip patch antenna working in the frequency range of 3.6 to 9.2 GHz frequency is used for the MI system. The antenna has a minimum return loss of -48 dB and a maximum gain of 4.5 dBi. Antenna is scanned over the breast tissue and a significant contrast in the reflected signals in the presence of the tumor is reported. The reflected signals at different positions of the antenna are then used to create a 2D image of the breast tissue showing the position of the tumor inside it. Specific absorption rate is also calculated in the tissue and is found well below the safety levels.
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Breast Cancer Detection; Microstrip Patch Antenna; Microwave Imaging; SAR; MATLAB; COMSOL Multiphysics; 2D Representation

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