Hello there I'm having quite a lot of trouble simulating a simple project emulating the antenna from the following paper ((PDF) Design and simulation of 13.56 MHz RFID tag in ink-jet printing technology (researchgate.net)): I used Copper as a Ground, Paper as the substrate and PEC as the conductive. I have assigned a Time Domain Solver and used an RCS probe with no decent results (attached below). How should I proceed? Also if I were to use the Frequency Domain solver how should I do it?

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Edu ​​​​​​​3DEXPERIENCE ​​​​​​​