Connection to SMA connectors of a stepped impedance microstrip filter

Hey guys, I'm trying to build a stepped impedance filter. I already calculated the trace widths and lengths for the series inductances and the shunt capacitances with the help of the book by Jia-Sheng Hong. The only question that is left to me is how to connect my filter design to some SMA connectors. Since they have a wave impedance of 50 Ohms do I have to put them on a piece of trace with the same characteristic impedance of 50 Ohms? If so, how do I make up for the fact that the connectors are probably a bit wider then the corresponding 50 Ohm trace? Thx for your help, I'm new to RF design!