Macros programming in modern electromagnetics software packages by the application example of log-periodic dipole array antennas designing

The proposed report notes the perspective of using programming features provided by modern commercial electromagnetic software packages to automate and accelerate the process of designing of complex multi-element microwave structures. Two macros coded for log-periodic dipole array antennas (LPDAs) designing in popular software tools FEKO and CST Microwave Studio are presented and discussed. These macros are able to create the fully parameterized models of multi-element log-periodic antenna structures including determination of mesh setting, material properties, boundary conditions, field monitors, and other project settings. Two example designs of LPDAs are shown. One of them is the simple L-band LPDA operating at the frequency range from 0.9 GHz to 1.5 GHz. Another one is the decade bandwidth planar LPDA feed for a reflector antenna with F/D ratio of 0.55 that consists of 47 dipoles.