A Gaussian even pulse high current high power broadband power line injection coupling network and construction method

Abstract

A Gaussian even pulse high-current high-power broadband power line injection coupling network is composed of a coupling unit and a decoupling unit. The coupling unit is composed of an inductor, a capacitor, and a resistor. The frequency bandwidth of the coupling interference signal, and then the LC series resonant circuit is connected in series with two resistors to couple the interference signal to the power line; the decoupling unit is composed of an inductor and a capacitor, and the inductor and capacitor form a low-pass filter to filter out high For noise signals of high frequency, by setting an appropriate series inductance value, it is ensured that a large common-mode suppression impedance is provided under the condition that the insertion loss meets the requirements, and the common-mode noise in the power line is effectively suppressed. A method for constructing a Gaussian even pulse high-current high-power broadband power line injection coupling network has eight steps. The invention is simple and easy to implement, and good coupling and decoupling performance can be realized by adjusting the resistance according to the output impedance of different signal generators and the impedance between line and ground.

Description

Technical field [0001] The invention relates to a Gaussian pulse high-current high-power broadband power line injection coupling network and a construction method. The coupling network unit injects high-current, high-power and wide-band Gaussian pulse interference signals into the tested lead when measuring the anti-interference of the power cable, and transfers the current from other leads and equipment connected to the tested equipment The impact is isolated. It belongs to the electromagnetic compatibility field of radio disturbance and immunity measurement. Background technique [0002] With the needs of industrial development, electronic equipment is becoming more and more complex, especially the mixing of analog circuits and digital circuits, and the working frequency of circuits is getting higher and higher, which leads to increasingly serious interference between circuits, and the equipment is located in The electromagnetic environment is more complicated, which poses a ...

AI Technical Summary

Problems solved by technology

However, these methods, due to structural reasons, most coupling networks are limited when used at frequencies up to 100KHz

However, in the increasingly severe and complex electromagnetic environment, we increasingly need to consider the anti-interference ability of the equipment after the high-current, high-power, broadband interference signal is injected into the power line. The current coupling network has not yet been designed.

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