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

Abstract

The invention relates to a Gaussian even pulse high-current high-power broadband power line injection coupling network. The Gaussian even pulse high-current high-power broadband power line injection coupling network comprises a coupling unit and a decoupling unit; the coupling unit consists of an inductor, a capacitor and resistors, wherein the inductor and the capacitor are serially connected to increase series resonance points for expanding the frequency band for coupling a disturbance signal, and then are connected in series with the parallel two resistors, and are respectively added to the positive end and the negative end of a signal wire; the decoupling unit consists of an inductor, a capacitor and a transformer, the inductor and the capacitor of the decoupling unit constitute a low pass filter which is used for filtering a high-voltage noise signal out, and common mode rejection impedance is increased by serially connecting the low pass filter with the transformer under the condition of not increasing the insertion loss, so that the common mode noise in the signal wire is effectively rejected. A construction method of the Gaussian even pulse high-current high-power broadband power line injection coupling network comprises seven major steps. According to the Gaussian even pulse high-current high-power broadband power line injection coupling network and the construction method thereof, the design that traditional capacitive coupling is confined to certain bandwidth and small signal interference voltage coupling is overcome, the coupling frequency band range is expanded, and a relatively large common mode rejection impedance is provided.

Description

technical field [0001] The invention relates to a Gaussian even pulse high-current high-power broadband signal line injection coupling network and a construction method. When measuring the immunity of the signal cable, the coupling network unit injects a high-current, high-power, broadband Gaussian even pulse interference signal into the test lead, and injects the current from other leads and devices connected to the test device. influences are 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 mixture of analog circuits and digital circuits is increasing, and the operating frequency of circuits is getting higher and higher, which leads to increasingly serious interference between circuits. The electromagnetic environment is more complex, which poses a severe challenge to t...

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 cable. The current coupling network has no relevant design.

Images