A Dual Slit Millimeter Wave Antenna Sensor for Breast Tumor Detection

Breast cancer is one of the most common tumors that impact women globally, as early identification increases treatment response and lengthens life expectancy. By tracking changes in the antenna's S11 parameter, the study examined the effectiveness of a small microstrip patch antenna operating in the millimeter Wave (mmWave) frequency range with a broad bandwidth (33.78-34.97GHz) in the early detection of breast cancer. Using the CST simulation, an antenna with an overall dimension of 4.7x4.7x0.508 mm³ was constructed using a Roger RT 5880 (lossy) substrate with a dielectric constant of 2.2. The developed antenna was tested inside a breast model with various tumor sizes. Within the breast model, the tumor size varied between 0.5 and 2mm.To test the antenna's ability to identify malignancies in their early stages, the tumor size and location were changed. The voltage standing wave ratio (VSWR) and return loss (S11) are measured for each model in order to determine the antenna system's performance. Additionally, the VSWR value is 1.09 which is an acceptable range. The antenna's return losses (S11) vary from -51.906dB to - 60.663dB depending on the tumor size and position. Small tumor with diameters more than or equal to 0.5 mm might be detected early because to the mmWave antenna's excellent efficiency and wide bandwidth.