Filtering type strong transient electromagnetic pulse protection structure

Abstract

The invention discloses a filtering type strong transient electromagnetic pulse protection structure, and relates to the technical field of strong electromagnetic pulse protection. According to the technical key points, the device comprises a metal shielding box body, a radio frequency filter circuit assembly, a primary high-pulse energy absorption module, a secondary high-pulse energy absorption module and a fine-level pulse energy absorption module, a metal inner cavity is formed in the metal shielding box body, and the metal shielding box body is provided with a radio frequency input end and a radio frequency output end which are communicated with the interior of the metal inner cavity; the radio frequency filter circuit assembly is arranged in the metal inner cavity and is electrically connected between the radio frequency input end and the radio frequency output end; and the primary high pulse energy absorption module, the secondary high pulse energy absorption module and the fine pulse energy absorption module are electrically connected between the radio frequency filter circuit assembly and the inner wall of the metal shielding box body in sequence from the radio frequency input end to the radio frequency output end, and the electromagnetic pulse protection structure has the advantage of saving space and cost of equipment.

Description

technical field [0001] The invention relates to the technical field of strong electromagnetic pulse protection, more specifically, it relates to a filtering type strong transient electromagnetic pulse protection structure. Background technique [0002] With the promotion and application of 5G communication technology and the rapid development of radio frequency and microwave technology to higher frequencies, the number of wireless device users is increasing day by day, and various wireless equipment and facilities are widely used in industrial and agricultural production, scientific research, outer space detection, and national defense construction. In engineering application fields such as homeland security and defense, the transceiver systems of various wireless equipment and facilities are placed in a complex electromagnetic environment. [0003] The wireless transceiver system equipment, especially the antenna and coaxial feeder, are exposed outside the equipment, and ar...

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Problems solved by technology

[0003] The wireless transceiver system equipment, especially the antenna and coaxial feeder, are exposed outside the equipment, and are extremely vulnerable to various strong transient electromagnetic pulses, and various transient strong electromagnetic pulses are introduced into the transceiver system through the antenna and feeder, causing critical Sensitive RF front-end equipment is damaged, which affects the normal operation of the wireless transceiver system

[0004] At present, in the protection of strong transient electromagnetic pulses, the narrowband radio frequency link protection technology of microsecond level (us) slow frontier (hereinafter referred to as "slow edge") strong electromagnetic pulse (such as lightning electromagnetic pulse) is relatively mature, while for other types of Nanosecond (ns) and below fast frontier (hereinafter referred to as "fast edge") strong electromagnetic pulse protection technology is still in its infancy. Fast edge and slow edge protection are usually independent functional modules, which makes the application inconvenient. The fast edge protection module cannot bear The energy of the slow-edge strong pulse, the response speed of the slow-edge module is very slow and cannot suppress the fast-edge strong electromagnetic pulse in time; at the same time, adding a special protection module to the RF front-end will sacrifice the performance indicators of the system to a certain extent and increase the complexity of the RF front-end

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