I am working on some front end electronics design working at 200MHz to 1 GHz for my MS project. I have designed the circuit and PCB. Trace width were calculated by simulations. After I given this to my local fab house, they have provided me a PCB strip about 1 ft in length with some via on each side and trace connecting them. This trace is mentioned to be 50ohm and 100ohm differential. But my guide wants to verify it by myself. My question is how can i practically measure the characteristic impedance of PCB traces, both single and differential pair. What instruments i am going to need and how do i connect them to strip, because i can't add a 50 ohm connector at test points.
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