Wearable microstrip antenna design for detection of cardiovascular occlusion

Death and cause of death by the Turkish Statistical Institute on a regular basis every year as the cause with the largest mortality rate in statistics, the circulatory system with a value of 36.8% diseases of origin have been transferred to statistics.The largest share of diseases caused by the circulatory system of 36.8% is the causes associated with heart diseases, compared to 39.1%. For this reason, it is important to detect heart diseases in advance. Researchers and scientists are looking for an alternative to devices such as ECG, MRI and KAG used in the detection and diagnosis of cardiovascular obstruction used in today's technology by considering these statistics. In this context, work has started on microstrip antennas and it is still ongoing. Microstrip antennas are used in many areas due to their advantages such as low cost, weight, small size, narrow and multi-band. Another area of use that has become popular recently is medical imaging and diagnostic systems. It was concluded that the frequency band used would not harm human health and would not emit ionizing radiation, and could be used to detect cardiovascular obstruction and other applications. It is aimed to use the advantages of this microstrip antenna, which is also mentioned in the basis of the thesis, in the detection of cardiovascular occlusion. In our study, it was proposed wearable to make the base structure of the microstrip antenna by selecting textile-based products. First, the antenna design was made in ANSYS HFSS program and the necessary simulation results were obtained. While obtaining the results, comments were made according to the changing electric field and return loss values, taking into account the blockage and non-blockage States of the vessel. Different antenna designs have been tried by changing the substrate materials in the microstrip antenna design. As a result, the antennas that we designed were prepared and measured on it by preparing phantoms of heart, skin, fat and novelistic tissue obtained from the literature in order to be likened to real heart tissue. These phantoms were prepared based on the electrical values of each of their tissues, which we received from the literature while preparing. The measurements were made by using the Vector Network Analyzer (VNA) device and the data received were compared with the results of the simulation data. It has been shown that the results of electric field values obtained from microstrip antennas that used and designed can be used to detect congestion.