I used CST 2022 to simulate an antenna pattern and exported it as an ASCII .txt file. But it seems in WinProp, the ASCII antenna pattern should be .apa file. I found a guide saying "Dassault Systèmes(CST) Microwave Studio can save antenna patterns in WinProp .apa format." But in CST, the pattern could be exported in .txt or .ffs format. May I ask if there is any way to convert CST ASCII .txt file to .apa file for WinProp? Many thanks for considering my question.
