Radio-frequency front end protecting unit

Abstract

The invention discloses a radio-frequency front end protecting unit which comprises a coupler (1), a delaying unit (2), a detecting circuit (3), a driving circuit (4) and an amplitude limiter / switch (5); when being input into a protecting circuit, the electromagnetic energy is divided into two parts by the coupler; one part of the electromagnetic energy enters the detecting circuit, and the other part of the electromagnetic energy enters the delaying unit; when the electromagnetic energy exceeds a setting threshold, the detecting circuit outputs driving signals, so that the amplitude limiter / switch (5) connected at an output port of the delaying unit acts to cut off the output of the delaying unit and prevent the electromagnetic energy from entering a radio frequency circuit to be protected. The radio frequency front end protecting unit solves the problem of quick response of a radio frequency front end protecting circuit of wireless electronic equipment, so that an electromagnetic protecting module with zero time response can be realized. The radio frequency front end protecting unit can be widely applied to anti-saturation and anti-damage protection of radio frequency front ends of the wireless electronic equipment.

Description

technical field [0001] The invention relates to a radio frequency front-end protection device for wireless equipment, in particular to an anti-saturation and anti-damage protection device for wireless receiving equipment. It can be applied to electromagnetic protection of wireless equipment. Background technique [0002] New concept weapons such as high-power and ultra-broadband electromagnetic pulses continue to emerge. The initial stage of future warfare will be electromagnetic warfare with the main purpose of destroying the enemy's accusation and communication detection systems. Once war breaks out, information systems will become the main target of strong electromagnetic pulse weapons. Strong electromagnetic pulse weapons destroy sensitive electronic equipment and systems with their high-intensity, ultra-wide-spectrum electromagnetic pulse energy released instantly, and become the "number one killer" of information systems. After the high-power electromagnetic pulse is...

AI Technical Summary

Problems solved by technology

After the high-power electromagnetic pulse is coupled into the system, it will directly cause electrical breakdown, thermal fusing or thermal stress destruction of semiconductor devices and circuits in the internal RF microwave front-end module

[0003] Restricted by the principle and device performance, the current technologies and products that can be used for RF front-end protection have the problem of insufficient response time

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