A multi-level electromagnetic shielding cavity assembly for a radio frequency connector

Abstract

The present application provides a multi-level electromagnetic shielding cavity component of a radio frequency connector, comprising: an electromagnetic shielding body, a connector accommodating cavity is provided in the electromagnetic shielding body, and an electromagnetic cancellation cavity is provided in the middle part of the electromagnetic shielding body in the thickness direction; an external detection probe is provided outside the electromagnetic shielding body; an external cancellation micro-antenna module is provided in the electromagnetic cancellation cavity; a main control module is connected to the external detection probe and the external cancellation micro-antenna module; when in a working state, the external interference electromagnetic parameters of the external interference electromagnetic wave are detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body, and the external cancellation micro-antenna module is started based on the external interference electromagnetic parameters and the external interference residual energy to generate external cancellation electromagnetic waves to cancel the external interference residual energy, so as to solve the problems of poor shielding effect, susceptibility to external electromagnetic wave interference, and easy damage of the existing radio frequency connectors.

Description

Technical Field

[0001] The present invention relates to the field of radio communication technology, and in particular to a multi-stage electromagnetic shielding cavity component of a radio frequency connector. Background Art

[0002] An RF connector is an electrical connector that is generally used in conjunction with a coaxial cable. Since the cable is used to transmit power or information, in order to avoid mutual interference of electromagnetic waves, the RF connector is required to have good shielding performance. However, during the use of RF connectors, there are problems such as poor shielding effect, susceptibility to external electromagnetic wave interference, and easy damage. Summary of the invention

[0003] In response to the above technical problems, the embodiments of the present application propose a multi-level electromagnetic shielding cavity assembly for an RF connector, which can solve the problems of poor shielding effect, susceptibility to external electromagnetic wave interference, and easy damage of existing RF connectors.

[0004] The embodiment of the present application provides a multi-level electromagnetic shielding cavity assembly of a radio frequency connector, comprising:

[0005] An electromagnetic shielding body, wherein a connector accommodating cavity is provided in the electromagnetic shielding body, and an electromagnetic compensation cavity is provided in the middle of the electromagnetic shielding body in the thickness direction, wherein the connector accommodating cavity is used to place a radio frequency connector;

[0006] An external detection probe is arranged outside the electromagnetic shielding body;

[0007] An external cancellation micro-antenna module is disposed in the electromagnetic cancellation cavity;

[0008] A main control module connected to the external detection probe and the external offset micro-antenna module;

[0009] When in the working state, the external interference electromagnetic parameters of the external interference electromagnetic wave are detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body. Based on the external interference electromagnetic parameters and the external interference residual energy, the external cancellation micro-antenna module is started to generate external cancellation electromagnetic waves to cancel the external interference residual energy.

[0010] In some embodiments, the electromagnetic shielding body includes an outer shielding body and an inner shielding body disposed within the outer shielding body;

[0011] The outer shielding body comprises an outer electric shielding body and an outer magnetic shielding body arranged inside the outer electric shielding body, and the inner shielding body comprises an inner electric shielding body and an inner magnetic shielding body arranged outside the inner electric shielding body, wherein the electromagnetic cancellation cavity is arranged between the outer magnetic shielding body and the inner magnetic shielding body.

[0012] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes:

[0013] An internal detection probe is arranged in the connector accommodating cavity;

[0014] An internal cancellation antenna module is provided on the external magnetic shielding body and is connected to the main control module;

[0015] When in the working state, the internal interference electromagnetic parameters of the internal interference electromagnetic wave are detected by the internal detection probe, and the internal interference residual energy when the internal interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the internal interference electromagnetic parameters and the physical parameters of the internal shielding body. Based on the internal interference electromagnetic parameters and the internal interference residual energy, the internal cancellation antenna module is started to generate internal cancellation electromagnetic waves to cancel the internal interference residual energy.

[0016] In some embodiments, the external cancellation micro-antenna module and the internal cancellation antenna module each include micro-antennas of multiple frequencies, and the multiple micro-antennas are arranged at intervals on the external magnetic shielding body and the internal magnetic shielding body.

[0017] In some embodiments, the main control module includes:

[0018] An energy storage unit connected to the electromagnetic shielding body;

[0019] The main control unit is connected to the energy storage unit, the external cancellation micro-antenna module, the internal cancellation antenna module, the external detection probe and the internal detection probe.

[0020] In some embodiments, the energy storage unit comprises:

[0021] A thermoelectric sheet is provided on the external magnetic shielding body and / or the internal magnetic shielding body;

[0022] A flow guiding device connected to the outer shield and / or the inner shield;

[0023] A storage battery is connected to the thermoelectric sheet, the flow guiding device and the main control unit.

[0024] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a flexible shielding body, which is disposed on the electromagnetic shielding body and located at both ends of the connector accommodating cavity, and a cable hole is provided on the flexible shielding body.

[0025] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a flexible shielding partition, which is disposed in the electromagnetic cancellation cavity and located at the connection between the electromagnetic shielding body and the flexible shielding body.

[0026] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a conductive shielding tape, and the conductive shielding tape is used to seal the connection between the cable in the cable hole and the cable hole.

[0027] In some embodiments, the electromagnetic shielding body is further provided with a wear-resistant coating.

[0028] The present application provides a multi-stage electromagnetic shielding cavity component of a radio frequency connector. By placing a radio frequency connector in the electromagnetic shielding body, and arranging the external detection probe outside the electromagnetic shielding body, and arranging the external cancellation micro-antenna module and the main control module in the electromagnetic cancellation cavity, the external interference electromagnetic parameters of the external interference electromagnetic wave can be detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body. Based on the external interference electromagnetic parameters and the external interference residual energy, the external cancellation micro-antenna module is started to generate external cancellation electromagnetic waves to cancel the external interference residual energy. The problems of poor shielding effect, susceptibility to external electromagnetic wave interference, and easy damage of existing radio frequency connectors can be solved, and the shielding effect can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Hereinafter, the present invention will be described in more detail based on embodiments and with reference to the accompanying drawings.

[0030] Figure 1 It is a front cross-sectional view of a multi-stage electromagnetic shielding cavity assembly of a radio frequency connector provided by an embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of splicing an electromagnetic shielding body provided by an embodiment of the present invention.

[0032] Reference numerals:

[0033] 110, outer shield; 1101, outer electric shield; 1102, outer magnetic shield; 120, inner shield; 1201, inner magnetic shield; 1202, inner electric shield; 130, connector accommodating cavity; 140, electromagnetic compensation cavity;

[0034] 210. Micro antenna;

[0035] 310. Thermoelectric sheet;

[0036] 40. flexible shielding body; 410. cable hole; 420. flexible compensation cavity;

[0037] 50. Flexible shielding partition;

[0038] 60. RF connector. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] RF connectors are generally considered to be a type of component that is attached to a cable or installed on an instrument, and serves as a component that electrically connects or separates a transmission line. It is a mechatronics product. Simply put, it mainly acts as a bridge. A cable is made of one or more mutually insulated conductors and an outer insulating protective layer. It is a wire that transmits electricity or information from one place to another. When current flows through a conductor (i.e., a cable), a magnetic field is formed around the conductor; when an alternating current passes through a conductor, an alternating electromagnetic field is formed around the conductor, which is called an electromagnetic wave. Electromagnetic leakage is prone to occur at the connection of the cable, that is, the electromagnetic waves generated by the current in the cable leak out, or external electromagnetic waves affect the current in the cable. Although existing RF connectors are usually used to connect cables, existing RF connectors have problems such as poor shielding, susceptibility to interference from external electromagnetic waves, and easy damage.

[0041] like Figure 1 , Figure 2 As shown, an embodiment of the present application provides a multi-level electromagnetic shielding cavity assembly of a radio frequency connector, comprising:

[0042] An electromagnetic shielding body, wherein a connector accommodating cavity 130 is provided in the electromagnetic shielding body, and an electromagnetic compensation cavity 140 is provided in the middle of the electromagnetic shielding body in the thickness direction, wherein the connector accommodating cavity 130 is used to place a radio frequency connector 60;

[0043] An external detection probe is arranged outside the electromagnetic shielding body;

[0044] An external cancellation micro-antenna module is disposed in the electromagnetic cancellation cavity 140;

[0045] A main control module connected to the external detection probe and the external offset micro-antenna module;

[0046] When in the working state, the external interference electromagnetic parameters of the external interference electromagnetic wave are detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity 140 is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body. Based on the external interference electromagnetic parameters and the external interference residual energy, the external cancellation micro-antenna module is started to generate external cancellation electromagnetic waves to cancel the external interference residual energy.

[0047] It should be noted that the electromagnetic shielding body is rectangular, and the corners of the electromagnetic shielding body can be arc transitions to reduce damage caused by bumps. The connector accommodating cavity 130 is located at the center of the electromagnetic shielding body, and the external detection probe is arranged on the outer surface of the electromagnetic shielding body for detecting external interference electromagnetic waves.

[0048] It should be noted that the external interference electromagnetic parameters may be the frequency, phase and amplitude of the external interference electromagnetic wave, and the physical parameters of the electromagnetic shielding body may be the material and thickness of the electromagnetic shielding body. Since the frequency of the electromagnetic wave remains basically unchanged during the transmission process, the phase and residual energy of the external interference electromagnetic wave when it is transmitted to the electromagnetic cancellation cavity 140 (that is, the external interference residual energy, the amplitude of the external interference electromagnetic wave represents its energy) can be calculated according to the frequency of the external interference electromagnetic wave and the material and thickness of the electromagnetic shielding body. Then, the external cancellation micro-antenna module is started by the main control module to generate an external cancellation electromagnetic wave with a frequency and energy corresponding to the external interference electromagnetic wave to cancel the external interference residual energy, thereby avoiding the influence of the external interference electromagnetic wave on the cable current in the RF connector 60, wherein the external detection probe may be an electromagnetic wave detection probe.

[0049] In some embodiments, the electromagnetic shielding body includes an outer shielding body 110 and an inner shielding body 120 disposed inside the outer shielding body 110;

[0050] The outer shielding body 110 includes an outer electric shielding body 1101 and an outer magnetic shielding body 1102 arranged on the inner side of the outer electric shielding body 1101 . The inner shielding body 120 includes an inner electric shielding body 1202 and an inner magnetic shielding body 1201 arranged on the outer side of the inner electric shielding body 1202 . The electromagnetic cancellation cavity 140 is arranged between the outer magnetic shielding body 1102 and the inner magnetic shielding body 1201 .

[0051] It should be noted that the outer electric shield 1101 and the inner electric shield 1202 are usually aluminum shields or copper shields with higher electrical conductivity, so that the outer electric shield 1101 and the inner electric shield 1202 can have better reflection effect; the outer magnetic shield 1102 and the inner magnetic shield 1201 are usually steel shields with higher magnetic permeability to increase the eddy current effect, wherein the external compensation micro antenna module is arranged on the outer magnetic shield 1102.

[0052] It should be noted that, usually, there are many types and quantities of the external interfering electromagnetic waves, and the intensities (i.e., energy levels) of the external interfering electromagnetic waves are different. Usually, electromagnetic waves with lower energy levels can be shielded when passing through the outer shielding body 110, and only a small amount of external interfering electromagnetic waves with high energy levels will enter the electromagnetic cancellation cavity 140, and be canceled by the external cancellation electromagnetic waves, thereby achieving targeted processing of external interfering electromagnetic waves of different energy levels.

[0053] It should be noted that if Figure 2As shown, the electromagnetic shielding body is a splicing structure, the seams of the outer electric shielding body 1101 and the outer magnetic shielding body 1102 are staggered, the seams of the inner electric shielding body 1202 and the inner magnetic shielding body 1201 are staggered, and the seams of the outer electric shielding body 1101 and the outer magnetic shielding body 1102 are also staggered with the seams of the inner electric shielding body 1202 and the inner magnetic shielding body 1201, wherein electromagnetic sealing gaskets are provided at the seams at various locations to prevent external interference electromagnetic waves from entering the connector accommodating cavity 130 through the seams,

[0054] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes:

[0055] An internal detection probe, disposed in the connector accommodating cavity 130;

[0056] An internal cancellation antenna module is provided on the external magnetic shielding body 1102 and is connected to the main control module;

[0057] When in the working state, the internal interference electromagnetic parameters of the internal interference electromagnetic wave are detected by the internal detection probe, and the internal interference residual energy when the internal interference electromagnetic parameters reach the electromagnetic cancellation cavity 140 is obtained based on the internal interference electromagnetic parameters and the physical parameters of the internal shielding body 120. Based on the internal interference electromagnetic parameters and the internal interference residual energy, the internal cancellation micro-antenna 210 module is started to generate internal cancellation electromagnetic waves to cancel the internal interference residual energy.

[0058] It should be noted that the internal detection probe user detects the internal interference electromagnetic parameters of the internal interference electromagnetic wave leaked from the RF connector 60, and the internal interference electromagnetic parameters are the frequency, phase and amplitude of the internal interference electromagnetic wave. The physical parameters of the inner shielding body 120 may be the material and thickness of the inner shielding body 120. Since the frequency of the electromagnetic wave is basically unchanged during the transmission process, the phase and residual energy (that is, the internal interference residual energy, the amplitude of the internal interference electromagnetic wave represents its energy) of the internal interference electromagnetic wave when it is transmitted to the electromagnetic cancellation cavity 140 can be calculated according to the frequency of the internal interference electromagnetic wave and the material and thickness of the inner shielding body 120. Then, the main control module is used to start the internal cancellation antenna module to generate an internal cancellation electromagnetic wave with a frequency and energy corresponding to the internal interference electromagnetic wave to cancel the internal interference residual energy, thereby avoiding the leakage of the internal interference electromagnetic wave. The internal detection probe may be an electromagnetic wave detection probe.

[0059] It should be noted that, usually, the types and quantities of the internal interfering electromagnetic waves are large, and the intensities (i.e., energy levels) of the internal interfering electromagnetic waves are different. Usually, electromagnetic waves with lower energy levels can be shielded when passing through the inner shielding body 120, and only a small amount of internal interfering electromagnetic waves with high energy levels will enter the electromagnetic cancellation cavity 140, and be canceled by the internal cancellation electromagnetic waves, thereby achieving targeted processing of internal interfering electromagnetic waves with different energy levels. Microwave absorbing materials may also be provided on the external magnetic shielding body 1102 and the internal magnetic shielding body 1201 to further absorb the interfering electromagnetic waves.

[0060] In some embodiments, the external cancellation micro-antenna module and the internal cancellation antenna module both include micro-antennas 210 of multiple frequencies, and the multiple micro-antennas 210 are arranged at intervals on the external magnetic shielding body 1102 and the internal magnetic shielding body 1201.

[0061] It should be noted that by setting up micro-antennas 210 of multiple frequencies, it is possible to offset the interference electromagnetic waves of most existing frequencies, wherein the multiple micro-antennas 210 are arranged at intervals in the length direction of the external magnetic shielding body 1102 and the internal magnetic shielding body 1201, and the multiple micro-antennas 210 are evenly distributed in the circumferential direction of the external magnetic shielding body 1102 and the internal magnetic shielding body 1201.

[0062] In some embodiments, the main control module includes:

[0063] An energy storage unit connected to the electromagnetic shielding body;

[0064] The main control unit is connected to the energy storage unit, the external cancellation micro-antenna module, the internal cancellation antenna module, the external detection probe and the internal detection probe.

[0065] In some embodiments, the energy storage unit comprises:

[0066] Thermoelectric sheet 310, disposed on the outer magnetic shielding body 1102 and / or the inner magnetic shielding body 1201;

[0067] A flow guiding device connected to the outer shielding body 110 and / or the inner shielding body 120;

[0068] The storage battery is connected to the thermoelectric sheet 310, the flow guiding device and the main control unit.

[0069] It should be noted that, by providing the flow guide device, the current on the outer shielding body 110 and the inner shielding body 120 can be stored in the battery, and by providing the thermoelectric sheet 310, the heat generated by the outer magnetic shielding body 1102 and the inner magnetic shielding body 1201 can be used to generate electricity, which can not only reduce the temperature of the outer magnetic shielding body 1102 and the inner magnetic shielding body 1201, but also reduce energy consumption. The thermoelectric sheet 310 is usually multiple, and the multiple thermoelectric sheets 310 are arranged at intervals on the outer magnetic shielding body 1102 and / or the inner magnetic shielding body 1201. A main battery can also be provided, and the main battery is used to power the main control unit, the inner detection probe, the outer detection probe, the outer cancellation micro-antenna module, and the inner cancellation antenna module.

[0070] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a flexible shielding body 40 , which is disposed on the electromagnetic shielding body and located at both ends of the connector accommodating cavity 130 , and a cable hole 410 is provided on the flexible shielding body 40 .

[0071] It should be noted that the flexible shielding body 40 can be conductive rubber and / or conductive foam. Usually, two flexible shielding bodies 40 are provided, one of which is connected to the outer shielding body 110, and the other of which is connected to the inner shielding body 120. A flexible compensation cavity 420 is formed between the two flexible shielding bodies 40. By providing the flexible shielding body 40, on the one hand, it can facilitate the threading of the cable, and on the other hand, it can also play a certain shielding role. The seam of the electromagnetic shielding body is located in the upper half of the electromagnetic shielding body, and the flexible shielding body 40 is usually connected to the electromagnetic shielding body in the lower half.

[0072] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a flexible shielding partition 50 , which is disposed in the electromagnetic cancellation cavity 140 and located at the connection between the electromagnetic shielding body and the flexible shielding body 40 .

[0073] It should be noted that the flexible shielding partition 50 may include a multi-layer shielding body, such as an aluminum shielding body and a steel shielding body, to separate the flexible shielding part, wherein the two side surfaces of the flexible compensation cavity 420 may be provided with micro antennas 210 of multiple frequencies to offset the interfering electromagnetic waves entering the flexible compensation cavity 420.

[0074] In some embodiments, the multi-stage electromagnetic shielding cavity assembly of the RF connector further includes a conductive shielding tape, and the conductive shielding tape is used to seal the connection between the cable in the cable hole 410 and the cable hole 410 .

[0075] In some embodiments, the electromagnetic shielding body is further provided with a wear-resistant coating.

[0076] It should be noted that by using the conductive shielding tape to seal the connection between the cable in the cable hole 410 and the cable hole 410, it is possible to prevent interfering electromagnetic waves from directly entering or leaking out of the electromagnetic shielding body. By also providing a wear-resistant coating outside the electromagnetic shielding body, it is possible to avoid damage to the electromagnetic shielding body and a reduction in shielding performance.

[0077] In summary, the embodiment of the present application provides a multi-stage electromagnetic shielding cavity assembly of an RF connector. By placing an RF connector 60 in the electromagnetic shielding body, and arranging the external detection probe outside the electromagnetic shielding body, and arranging the external cancellation micro-antenna module and the main control module in the electromagnetic cancellation cavity 140, the external interference electromagnetic parameters of the external interference electromagnetic wave can be detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity 140 is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body. Based on the external interference electromagnetic parameters and the external interference residual energy, the external cancellation micro-antenna module is started to generate external cancellation electromagnetic waves to cancel the external interference residual energy. This can solve the problems of poor shielding effect, susceptibility to external electromagnetic wave interference, and easy damage of the current RF connector 60, and improve the shielding effect.

[0078] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (apparatus, systems), and / or computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0079] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0080] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0081] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A multi-stage electromagnetic shielding cavity assembly of a radio frequency connector, characterized in that: include: An electromagnetic shielding body, wherein a connector accommodating cavity is provided in the electromagnetic shielding body, and an electromagnetic compensation cavity is provided in the middle of the electromagnetic shielding body in the thickness direction, wherein the connector accommodating cavity is used to place a radio frequency connector; An external detection probe is arranged outside the electromagnetic shielding body; An external cancellation micro-antenna module is disposed in the electromagnetic cancellation cavity; A main control module connected to the external detection probe and the external offset micro-antenna module; When in the working state, the external interference electromagnetic parameters of the external interference electromagnetic wave are detected by the external detection probe, and the external interference residual energy when the external interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the external interference electromagnetic parameters and the physical parameters of the electromagnetic shielding body. Based on the external interference electromagnetic parameters and the external interference residual energy, the external cancellation micro-antenna module is started to generate external cancellation electromagnetic waves to cancel the external interference residual energy. The external interference electromagnetic parameters are the frequency, phase and amplitude of the external interference electromagnetic wave, and the physical parameters of the electromagnetic shielding body are the material and thickness of the electromagnetic shielding body.

2. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 1, characterized in that: The electromagnetic shielding body comprises an outer shielding body and an inner shielding body arranged in the outer shielding body; The outer shielding body comprises an outer electric shielding body and an outer magnetic shielding body arranged inside the outer electric shielding body, and the inner shielding body comprises an inner electric shielding body and an inner magnetic shielding body arranged outside the inner electric shielding body, wherein the electromagnetic cancellation cavity is arranged between the outer magnetic shielding body and the inner magnetic shielding body.

3. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 2, characterized in that: Also includes: An internal detection probe is arranged in the connector accommodating cavity; An internal cancellation antenna module is provided on the external magnetic shielding body and is connected to the main control module; When in the working state, the internal interference electromagnetic parameters of the internal interference electromagnetic wave are detected by the internal detection probe, and the internal interference residual energy when the internal interference electromagnetic parameters reach the electromagnetic cancellation cavity is obtained based on the internal interference electromagnetic parameters and the physical parameters of the internal shielding body. Based on the internal interference electromagnetic parameters and the internal interference residual energy, the internal cancellation antenna module is started to generate internal cancellation electromagnetic waves to cancel the internal interference residual energy.

4. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 3, characterized in that: The external cancellation micro-antenna module and the internal cancellation antenna module both include micro-antennas of multiple frequencies, and the multiple micro-antennas are arranged at intervals on the external magnetic shielding body and the internal magnetic shielding body.

5. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 3, characterized in that: The main control module comprises: An energy storage unit connected to the electromagnetic shielding body; The main control unit is connected to the energy storage unit, the external cancellation micro-antenna module, the internal cancellation antenna module, the external detection probe and the internal detection probe.

6. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 5, characterized in that: The energy storage unit comprises: A thermoelectric sheet is provided on the outer magnetic shielding body and / or the inner magnetic shielding body; A flow guiding device connected to the outer shield and / or the inner shield; A storage battery is connected to the thermoelectric sheet, the flow guiding device and the main control unit.

7. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 1, characterized in that: It also includes a flexible shielding body, which is arranged on the electromagnetic shielding body and located at two ends of the connector accommodating cavity, and a cable hole is arranged on the flexible shielding body.

8. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 7, characterized in that: It also includes a flexible shielding partition, which is arranged in the electromagnetic compensation cavity and located at the connection between the electromagnetic shielding body and the flexible shielding body.

9. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to claim 7, characterized in that: It also includes a conductive shielding tape, which is used to seal the connection between the cable in the cable hole and the cable hole.

10. The multi-stage electromagnetic shielding cavity assembly of the radio frequency connector according to any one of claims 1 to 9, characterized in that: The electromagnetic shielding body is also provided with a wear-resistant coating.

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