Controlled Patch Antenna of Axial Topology with Quasi-Fractal Substructure

The paper presents the results of numerical simulation of the main electrodynamic characteristics of a controlled planar antenna with a hybrid topology containing an unclosed ring microstrip resonator, a disk microstrip resonator with quasi-fractal internal structure, and a controlled semiconductor element. For numerical simulation an integrated approach was used, including the semi-open resonator method and the finite element method (FEM). The FEM was implemented using the commercial package ANSYS HFSS. A quasi-fractal substructure made it possible to implement an additional frequency selection.