Radio frequency front-end comprehensive electromagnetic protection circuit

A protection circuit and radio frequency front-end technology, which is applied in the direction of electric heating fuel, household heating, lighting and heating equipment, etc., to achieve the effects of low insertion loss, optimized low-pass filter characteristics, and fast response speed

Active Publication Date: 2020-08-21
ARMY ENG UNIV OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved in the present invention is to provide a radio frequency front-end integrated electromagnetic protection circuit to solv...

Method used

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  • Radio frequency front-end comprehensive electromagnetic protection circuit
  • Radio frequency front-end comprehensive electromagnetic protection circuit
  • Radio frequency front-end comprehensive electromagnetic protection circuit

Examples

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Embodiment Construction

[0052] The present invention will be described in further detail below in conjunction with the examples.

[0053] Such as figure 1 As shown, the embodiment of the present invention provides a schematic structural diagram of a radio frequency front-end integrated electromagnetic protection circuit, which includes an input matching circuit 1, an expansion protection circuit 2, a first inter-stage matching circuit 3, a switch protection circuit 4, and a third inter-stage matching circuit. Circuit 6, limiter protection circuit 7, output matching circuit 9 and coupling detection circuit 10.

[0054] In Embodiment 1, the integrated electromagnetic protection circuit of the radio frequency front end is designed to be bidirectional, which can be directly applied between the antenna and the radio frequency front end without affecting the normal sending and receiving communication.

[0055] In another embodiment 2, the integrated electromagnetic protection circuit of the radio frequen...

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PUM

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Abstract

The invention relates to a radio frequency front-end comprehensive electromagnetic protection circuit, which comprises an input matching circuit, a capacity expansion protection circuit, a switch protection circuit, an amplitude limiting protection circuit, first to fourth inter-stage matching circuits, an output matching circuit and a coupling detection circuit; the first end of the input matching circuit serves as an input end, and the second end of the input matching circuit is connected with the first end of the capacity expansion protection circuit. The capacity expansion protection circuit at least comprises two capacity expansion branches; the switch protection circuit comprises more than one conduction unit. The amplitude limiting protection circuit comprises more than one amplitude limiting unit; the coupling detection circuit comprises a directional coupler, a detection diode, a third inductor and a choke inductor. The circuit has a continuous wave and transient strong electromagnetic pulse comprehensive protection capability, and the power capacity and the through-current capability of a large signal at the radio frequency front end under a strong field continuous wave and a strong electromagnetic pulse are improved.

Description

technical field [0001] The invention relates to the field of electromagnetic protection, in particular to a comprehensive protection circuit for radio frequency front-end continuous wave and transient strong electromagnetic pulse. Background technique [0002] With the competition for spectrum resources by electrical and electronic equipment, the electromagnetic environment is getting worse and worse, which is characterized by high spectrum density, high energy intensity, and multiple signal styles. In addition to various continuous wave signals in space, there are also various intentional and unintentional electromagnetic pulses. In particular, strong electromagnetic pulse weapons have become the object of competition for development by various countries. After decades of development, a large number of foreign advanced strong electromagnetic pulse weapons have equipped troops, posing a huge threat to my country's electricity, communications, finance, energy, and transportat...

Claims

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Application Information

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IPC IPC(8): H05B6/06F24C7/08
CPCF24C7/08H05B6/06
Inventor 王玉明陈亚洲孟兆祥马立云毕军建谭志良宋培姣
Owner ARMY ENG UNIV OF PLA
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