Self-calibration measuring method of ultra-wide spectrum pulse amplitude

Abstract

The invention provides a self-calibration measuring method of an ultra-wide spectrum pulse amplitude, which is characterized in that a measuring system consisting of a ultra-wide spectrum pulse source, multiple attenuator assemblies and an oscilloscope is used, and comprises the steps of obtaining different measured values on the oscilloscope by connecting to different attenuator assemblies, thereby calculating the attenuation of each attenuator in each attenuator assembly accurately and further calculating the output pulse amplitude of the ultra-wide spectrum source accurately. With the method, the problem that the attenuation of the attenuator with different ultra-wide spectrum pulses is different can be solved, the measuring error due to the fact that the attenuator adopts the frequency domain calibration result can be overcome effectively, the measuring accuracy of the ultra-wide spectrum pulse can be obviously increased, the attenuation coefficient of the attenuator can be calibrated, and more attenuators are used, the measured result is more accurate.

Description

technical field [0001] The invention relates to a method for measuring the amplitude of an ultra-wide spectrum pulse, in particular to a self-calibrating and accurate measurement method for the amplitude of an ultra-wide spectrum pulse realized based on a series attenuator group. Background technique [0002] Ultra-wide-spectrum electromagnetic pulse refers to the electromagnetic pulse signal with pulse front of sub-nanosecond level and pulse width of nano-second level. It has a wide range of applications in communication, environmental protection, medical and military fields. basis of the technology. Generally, the calibrated capacitive voltage divider, resistive voltage divider, attenuator and other devices are used to measure the measured ultra-wide spectrum pulse. Before the measurement, use a vector network analyzer to calibrate the attenuation of the attenuator used in the measurement, and then calibrate the voltage divider by using a pulse source whose output pulse i...

AI Technical Summary

Problems solved by technology

[0003] However, the problem with this ultra-wideband pulse measurement method is that the attenuation coefficients of devices such as voltage dividers and attenuators are directly related to the waveform and frequency band of the measured pulse, and it is difficult to combine the nominal values ​​of the attenuators and other devices with the oscilloscope. Display the result to get the real ultra-wide spectrum pulse amplitude, the operation is complex and prone to large measurement errors

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