“…Probe designs with CPW technology provide better signal-to-noise ratio compared with conventional microstrip transmission lines. The user only needs to adjust the width of the central transmission line and the gap between the transmission line and the grounding surface to create a characteristic resistance of 50 Ω [10][11][12]. Measurement methods used by current probes have been described in [13,14], and require SMA connectors to be provided to every testing pin so that a connection can be established with the current probe during measurement.…”