I'm a beginner at PCB design and Altium. I'm trying to make a 50 ohm stripline using two ground planes, two dielectrics and one signal layer sandwiched between them. There are no other components on the board except this.
My layers look like this: (see image attached) but I cannot get Altium to convert it into a board, even with the correct impedance profile.
I wasn't able to find anything by googling/youtube for this kind of a problem. Would be really grateful if someone could explain how to go about putting down a single stripline trace without any components.