Radio frequency signal thunder and lightning electromagnetic pulse multistage bidirectional protection device

Abstract

The invention relates to the technical field of thunder and lightning electromagnetic pulse protection, particularly to a radio frequency signal particularly to thunder and lightning electromagnetic pulse multistage bidirectional protection device, which comprises a metal body, a first radio frequency port and a second radio frequency port, wherein the first radio frequency port and the second radio frequency port are arranged on two sides of the metal body, the metal body is provided with a cavity, and a thunder and lightning protection circuit is arranged in the cavity. According to the invention, the transient suppression diode is used for multi-stage protection, the response speed is improved, and the response speed is picosecond level, so that the reliability of various radio frequency links is improved, and the invasion and impact of thunder and lightning electromagnetic pulses and thunder and lightning surges on key parts or equipment on the radio frequency links can be effectively prevented.

Description

technical field [0001] The invention relates to the technical field of lightning electromagnetic pulse protection, in particular to a multi-stage bidirectional protection device for radio frequency signal lightning electromagnetic pulse. Background technique [0002] Lightning electromagnetic pulse is a kind of strong transient electromagnetic pulse accompanied by lightning, which is the most serious source of natural electromagnetic interference. The lightning electromagnetic pulse generated at the moment of lightning discharge has the characteristics of large steepness, large peak current, strong electric field, long response time, low starting point of spectrum coverage, relatively narrow frequency band (100Hz-100MHz), and huge energy. , Exposed interconnection cables, buried cables or exposed metals induce strong induced overcurrent and overvoltage, resulting in hazards such as voltage and current surges, high voltage breakdown and transient strong electromagnetic pulse ...

AI Technical Summary

Problems solved by technology

However, most of the technical and engineering applications are mostly aimed at the protection of the power system, and most of the RF coaxial category is limited to a single gas discharge tube (GDT) and a quarter-wavelength stub (QWS) technology. However, the protection technology of gas discharge tube (GDT) has disadvantages such as slow response speed, high residual voltage, poor reliability, and high maintenance cost; the response speed and residual voltage of QWS protection technology have been improved, but the working bandwidth is very narrow and the application cost is high.

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