Electromagnetic energy protection module and radio frequency transceiving link based on same

Abstract

The invention provides an electromagnetic energy protection module and a radio frequency transceiving link based on the electromagnetic energy protection module. The electromagnetic energy protection module comprises a bi-directional coupler, a detection circuit and a protection circuit, the bi-directional coupler comprises four ports, namely a first port, a second port, a third port and a fourth port, the first port is correspondingly connected with an antenna on the receiving and transmitting common channel, the second port is correspondingly connected with a transmitting branch or a receiving branch of the receiving and transmitting common channel, and the third port is correspondingly connected with a receiving branch of the receiving and transmitting common channel. A detection circuit and a protection circuit are connected between the third port and the second port, and the fourth port is connected with a matched load; the third port of the bi-directional coupler takes out the electromagnetic energy from the transmitting-receiving common channel and sends the electromagnetic energy to the detection circuit for detection, and when the electromagnetic energy taken out from the transmitting-receiving common channel by the third port of the bi-directional coupler reaches a set threshold value, the driving protection circuit is started after the electromagnetic energy is detected by the detection circuit. The device is based on transmitting and receiving shared channel electromagnetic protection and can be directly loaded between an antenna and equipment, so that strong electromagnetic reinforcement is completed.

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, strong controllability, low restriction and high strike efficiency, and is favored by more and more military powers. favor. The entry of strong electromagnetic energy from the antenna can directly or indirectly weaken or even cause the command information system to be paralyzed, resulting in confusion in battlefield perception, disordered command coordination, and decreased effectiveness of frequency equipment, affecting 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 pr...

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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