HF/VHF frequency-range ultra wide band electromagnetic pulse protection module

Abstract

The invention provides an HF / VHF frequency-range ultra wide band electromagnetic pulse protection module comprising a coaxial cavity low-pass filter, a gas discharge tube, a high-power TVS (Transient Voltage Suppressors) tube and a low-power TVS tube, wherein the two ends of the coaxial cavity low-pass filter are connected to coaxial ports through copper leads, respectively; the gas discharge tube and the high-power TVS tube are connected in series and then connected between the copper lead at one end of the coaxial cavity low-pass filter and a ground wire; and the low-power TVS tube is connected between the copper lead at the other end of the coaxial cavity low-pass filter and the ground wire. In the coaxial connection manner, the module can be conveniently mounted on a coaxial signal wire between an outdoor cable (including an antenna) and an indoor electronic device so as to discharge ultra wide band electromagnetic pulses coupled to the signal cable; therefore, the module is capable of protecting HF / VHF frequency-range sensitive devices from the damage of the pulse energy.

Description

technical field [0001] The invention belongs to the technical field of strong electromagnetic pulse protection, and in particular relates to an ultra-wideband electromagnetic pulse protection module with wide applicability for HF / VHF frequency band sensitive equipment, which can be used for HF / VHF frequency band electronic equipment with a steep rise time (less than 1ns) ) for UWB EMP protection. Background technique [0002] Ultra-broadband electromagnetic pulse refers to a strong electromagnetic pulse with a rising edge time less than 1ns. Due to its extremely fast rising edge time, its spectral energy may be distributed in the range from 10MHz to several GHz, or even exceed 10GHz. Covering the working frequency band of most sensitive equipment at present, the ultra-wideband electromagnetic pulse can generate strong coupling with the antenna of sensitive equipment and enter the RF front-end and cause damage to the equipment. In addition, due to the high-frequency componen...

AI Technical Summary

Problems solved by technology

For ultra-broadband electromagnetic pulses, due to its extremely fast rise time (up to 0.1ns, pulse width is only 1ns), and the response time of the fastest suppression device TVS tube is only 1ns, its rise time is 0.1ns, ultra-broadband electromagnetic pulse with a pulse width of 1ns basically does not have any protective effect (most of the electromagnetic pulse energy has entered the subsequent circuit through the suppression device before the suppression device starts to respond)

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