Two Compact Coaxial Cable Connectors With Self-Integrating Sensors to Measure Nanosecond Pulse Signals

Abstract

It is put forward that an attenuator can be integrated into an n-type or an Subminiature version A-type cable connectors to realize the compactness of the signal measurement system for certain types of pulsed power systems. Two types of compact cable connectors are designed and fabricated for the nanosecond high-voltage (HV) and the nanosecond large current (LC) signal measurements, respectively. As to the nanosecond HV signals, it is suggested that the HV arm resistor of a series resistor voltage division circuit (SRVDC) can be integrated into a coaxial cable connector. This integrated connector can link a self-integrating capacitive voltage divider (CVD) to an oscilloscope directly with a voltage attenuation factor of $\beta _{1}(1+R_{1}/Z$ ), where $\beta _{1}$ is the voltage ratio of the CVD, $R_{1}$ is the HV arm resistor of the SRVDC, and $Z$ is the characteristic impedance of the cable. As to the nanosecond LC signals, it is suggested that n resistors with a resistance of $nR_{s}$ can bridge angularly between the two conductors of the integrated HV cable connector to play the role of current viewing resistor. This integrated connector can also link a self-integrating Rogowski coil to an oscilloscope directly with a current sensitivity of $N(1+R_{1}/Z)/R_{s}$ , where $N$ is the turn number of the Rogowski coil. These two compact cable connectors have the advantages of small volume, lightweight, and adjustable attenuation factor. In the end, the application of these two types of compact cable connectors to test the nanosecond signals of a Tesla-type generator is presented.