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

A technology of pulse amplitude and measurement method, which is applied in the field of measurement of ultra-wide spectrum pulse amplitude, can solve problems such as complex operation and large measurement error, achieve high measurement accuracy, wide application range, and overcome measurement error

Inactive Publication Date: 2013-02-06
NORTHWEST INST OF NUCLEAR TECH
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  • Abstract
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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,

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

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Embodiment Construction

[0022] The following is a further description of the ultra-broadband pulse high-precision self-calibration measurement method of the present invention in conjunction with the accompanying drawings. In the figure, the combination of three attenuators is used as an example to illustrate the measurement method of the ultra-broadband pulse amplitude.

[0023] The first step, according to the attached figure, connect three attenuators A1, A2, and A3 in series between the ultra-wide spectrum pulse source to be measured and the oscilloscope, that is, connect the output end of the ultra-wide spectrum pulse source to the input end of the attenuator A1 , the output end of the attenuator A1 is connected to the input end of the attenuator A2, the output end of the attenuator A2 is connected to the input end of the attenuator A3, the output end of the attenuator A3 is connected to the input end of the oscilloscope, and the voltage signal V of the oscilloscope is obtained by measuring;

[00...

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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...

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Application Information

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IPC IPC(8): G01R29/08
Inventor 刘锋王希波袁雪林邵贤忠郝文析万可友郑翠薇周世友
Owner NORTHWEST INST OF NUCLEAR TECH
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