As RF products become more integrated, RF connectors are rarely available to measure the output or impedance of a specific device or section of the circuit board directly. It is a common practice that coaxial cables are soldered on the board to gain access to the suspect circuit. The risk of using this approach is that the cable could peel off the copper traces or pads the circuit board and hence damage the DUT. Furthermore, it is difficult to de-embed the test cable and its solder joint.
RF Probing Demonstrations
RF Fixture Probing with S-Probes and TP250s
RF Antenna Probing with S-Probe and TP250
RF Module Probing with S-Probes and TP250s
Non-contact probing with Keysight RF probe and FP160 positioner