Design of a Novel V-Dot Coaxial Pulse Probe With Wideband 0.01–1 GHz

Abstract

The measurement of square wave signals with sub-nanosecond (<1> $\Omega $ effectively enhances the low-frequency performance of the probe. The “ringing” phenomenon of the loop under high-resistance load is further analyzed in this study. To achieve wideband measurement, waveform distortion is effectively suppressed by incorporating a damping resistor and limiting the length of the transmission signal line. Finally, by conducting electromagnetic field simulation, network analyzer inspections, and calibrating experimental standard signal generators, we demonstrated that the proposed coaxial pulse probe has a wideband range of 10 MHz–1 GHz, a leading-edge response time of approximately 350 ps, and a measurement error of less than 3%.