An electromagnetic pulse protection device

Abstract

The invention relates to the field of electromagnetic protection and aims at providing an electromagnetic pulse protection device, comprising a first level protection device, a radio frequency switch, a second level protection device, a protection device, a first single-pole double-throw switch and a second single-pole double-throw switch. The first level protection device comprises a waveguide plasma amplitude limiter and a broadband filter. The second level protection device comprises an amplitude limiter assembly. The protection device comprises a notch filter assembly. An antenna interface, the first level protection device, the second level protection device and the protection device are connected in sequence through a radio frequency cable. The first single-pole double-throw switch and the second single-pole double-throw switch are connected and then are connected with the notch filter assembly in parallel. The first single-pole double-throw switch is connected with the amplitude limiter assembly. The second single-pole double-throw switch is connected with a receiving front end. The device has the beneficial effects that high level signal interference between strong electromagnetic pulse and devices is suppressed at the same time, and under the condition that interference signal frequency points and a bandwidth are known, the function that a radio frequency system still can work is ensured.

Description

Technical field [0001] The invention relates to the field of electromagnetic protection, in particular to a device capable of protecting strong electromagnetic pulses in a complex electromagnetic environment. Background technique [0002] With the development of electromagnetic pulse technology, the electromagnetic pulse radiation field strength reaches hundreds of kV / m, and the pulse rise time is ns level. The electromagnetic pulse voltage and current induced in the communication equipment can instantly break down or burn down the communication equipment; The half-decay point frequency of lightning pulses is 500Hz, while the half-decay point frequency of electromagnetic pulses is 1MHz; therefore, electromagnetic pulses produce not only transient high-energy shock problems, but also high-frequency and high-intensity electromagnetic interference problems. Strong electromagnetic pulse protection is required for communication electronic equipment. [0003] At present, the main ideas ...

AI Technical Summary

Problems solved by technology

However, the delay circuit often brings a large insertion loss, which affects the performance of the whole machine and has a great impact on the performance of the communication system in the future.

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