Electromagnetic energy protection module and radio frequency transceiver link based thereon

Abstract

The present invention provides an electromagnetic energy protection module and a radio frequency transceiver link based thereon, comprising a dual directional coupler, a detection circuit and a protection circuit; the dual directional coupler includes four ports, which are a first port and a second port respectively. , the third port and the fourth port, wherein the first port corresponds to the antenna on the shared channel for sending and receiving, the second port corresponds to the transmitting branch or the receiving branch connecting the shared channel for sending and receiving, and the third port and the second port are connected with A detection circuit and a protection circuit, the fourth port is connected to a matching load; the third port of the dual directional coupler takes out electromagnetic energy from the transceiver shared channel and sends it to the detection circuit for detection, when the third port of the dual directional coupler is from the transceiver shared channel The electromagnetic energy extracted from the upper reaches the set threshold value, and after detection by the detection circuit, the drive protection circuit is turned on. The invention is based on the electromagnetic protection of the transmission and reception shared channel, and can be directly loaded between the antenna and the device, so as to complete the strong electromagnetic reinforcement.

Description

technical field [0001] The invention relates to the technical field of electromagnetic protection, in particular to an electromagnetic energy protection module and a radio frequency transceiver link based thereon. Background technique [0002] Strong electromagnetic energy attack has high energy intensity, high peak value, adjustable spectrum width, wide range of action, and has strong controllability, small restriction and high strike efficiency, and is subject to more and more military powers. favor. Entry of strong electromagnetic energy from the antenna can directly or indirectly weaken or even paralyze the command information system, resulting in confusion in battlefield perception, disordered command coordination, decreased efficiency of frequency-use equipment, and even misleading command decisions. The shared channel for transmitting and receiving at the back end of the antenna is the only way for strong electromagnetic energy. The traditional protection method does...

AI Technical Summary

Problems solved by technology

When the energy flowing in from the antenna end is small, although the coupling degree of the coupling end is large, the total energy extracted is not enough to make the protection branch conduct. At this time, the energy received by the antenna can pass through the protection module with relatively low loss; When the energy is large, the total energy taken out from the coupling port is large, which can drive the protection branch to open. At this time, most of the energy is reflected and cannot enter the receiving branch, which will damage the sensitive parts of the receiving branch.

[0004] The design idea of ​​the existing protection module is based on the limiter, which can only be used for the protection of the receiving branch, and as the electromagnetic energy radiated in space becomes larger and larger, it is difficult for the simple limiter to deal with such a strong energy impact

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