In this study, it is aimed to detect occlusion in the cardiac vessels with two different microstrip antennas. Occlusions located in different locations and sizes in the vessel are simulated using ANSYS HFSS and detected by evaluating the Scattering parameters and Electric field values. Antennas in Circular and Seljuk star geometries are designed on Jean (Denim) substrate that allow usage in wearable applications. This study is a preliminary study of a research project and it is predicted that cardiovascular occlusions can be detected by using microstrip antennas in non-ionizing frequency band. Again, by evaluating the values taken, the location and percentage of the occlusion can be determined.