Low-resistance transmission circuit for CVP probe active integration method

Abstract

The invention discloses a low-resistance transmission circuit based on a CVP probe active integration method. The low-resistance transmission circuit consists of a CVP probe unit, an integration unit and an impedance conversion unit, wherein high-voltage pulse square waves are input into an input end of the CVP probe unit; high resistance is set between integration signal output circuits of an RC integration circuit; low resistance is set between output circuits of the impedance conversion unit; and the output circuits of the impedance conversion unit are directly connected to a signal transmission line. Through adoption of the low-resistance transmission circuit, a low-resistance transmission technology based on the CVP probe active integration method is realized under the situation that technical problems in a general integration method are solved completely. An active integrator is directly connected with a CVP probe output end, so that the influence of a long cable on a differential signal high-frequency component is eliminated, and the problem that general test measures such as integration signal transmission (long cables or optical fibers), impedance matching, signal shutting or overlapping cannot be taken on the aspect of testing technology is well solved.

Description

technical field [0001] The invention relates to the field of signal transmission, in particular to a low-resistance transmission circuit of a CVP probe active integration method. Background technique [0002] Linear induction accelerator (hereinafter referred to as LIA) high-voltage fast-pulse acceleration chamber voltage waveform test, usually a single square wave pulse with a waveform bandwidth of tens of megahertz and an amplitude of several hundred kilovolts. Usually, the CVP probe and the cable load are used to differentiate the original signal, and then integrated and restored through the remote integrating box (integrating resistance is the input resistance of the oscilloscope) to obtain the voltage waveform of the accelerating chamber. However, the signal transmission cable of this method is usually long, making the differential signal The loss of high-frequency components is serious, resulting in distortion of the restored waveform. [0003] The measurement of the ...

AI Technical Summary

Problems solved by technology

The coaxial cable of tens to one hundred meters or more transmits the differential signal to the terminal, and the loss of the front and rear edges of the differential signal is serious. This is due to the attenuation of the high frequency component of the signal due to the limitation of the bandwidth of the coaxial cable, and the use has certain limitations.

However, the voltage waveform after integration in the high-impedance state cannot be transmitted by coaxial cables, and is limited by the low-impedance characteristics.

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