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    Designs of three different octagonal-shaped antennas for microwave-based breast cancer detection
    (Iop Publishing Ltd, 2023) Aydin, Emine Avsar; Aydin, Ahmet; Saribas, Gozde
    Today, there are numerous studies on Microwave Imaging Methods. Thanks to these studies, the success and accuracy rate, especially in breast cancer diagnosis, increases. Microstrip antennas are used in the microwave imaging method. In this study, three different antenna models aimed to be used in microwave imaging methods were designed on the CST Studio Suite program. The designed antennas have been tested on the phantom model in the simulation environment. The test results were examined, and the designed antennas were produced using 3D printing technology. The built antennas were tested in the laboratory using the phantom and tumor-containing phantom models and obtained results were compared.
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    Multilayer Perceptron Approach to Different Parameter Bow-tie Antennas Produced with PLA / Carbon / Copper Mixtures
    (Institute of Electrical and Electronics Engineers Inc., 2020) Saribas, Gozde; Aydin, Emine Avsar; Torun, Ahmet Refah
    The study aims to observe the operating efficiency of seven different Bowtie Antennas produced with PLA/Carbon mixture material under the desired conditions. The constructed antennas' desired feature is that the return loss (s11) in the low-frequency range is -10dB and below. This value is that the antenna's s11 value is of great importance in detecting the tumor in the breast tissue. Parameters of antennas are the antenna substrate's thickness, the antenna substrate area, and the antenna legs' length. With these parameter values, s11 data were obtained in the frequency range 0-3 GHz. Another purpose of the study is to observe the effect and accuracy of the parameters used based on the return loss estimation of the designed antennas. The data obtained were evaluated using the Multilayer Perceptron approach. © 2020 IEEE.
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    Öğe
    Multilayer Perceptron Approach to PLA, PLA /Copper and PLA / Carbon Substrate Bow-tie Antenna Production
    (Institute of Electrical and Electronics Engineers Inc., 2020) Saribas, Gozde; Aydin, Emine Avsar; Torun, Ahmet Refah
    The study aims to observe the operating efficiency of Bowtie Antennas produced with three different materials under the desired conditions and to compare between materials. The produced antennas' desired feature is that the return loss (s11) in the low-frequency range is -10dB and below. This value is that the s11 value of the antenna is of great importance in detecting the tumor in the breast tissue. Parameters of antennas produced with different materials; The dielectric coefficient of the material used is the antenna diameter, the antenna substrate's thickness, and the length of the antenna legs. With these parameter values, s11 data at different frequency values in the frequency range of 0-3 GHz were obtained. Another purpose of the study is to observe the effect and accuracy of the parameters used on the result of the return loss estimation of the designed antennas. The data obtained were evaluated using the Multilayer Perceptron approach. © 2020 IEEE.