Hello Geeks,
                 I have aTDR measurement system and I want to make a serpentine trace to match the impedance of the air filled coax which is around 54 ohms.
                 Iam new to RF design and frankly speaking I dont know how to make that trace,so that the impedance is matched with the coax.Freq used is nearly 7Ghz. Please help me to design its my master thesis work.I have jst 2 months left to complete.

Thanks & Regards,
Ritesh Pattnaik.