CN106450617B - Novel broadband transient electromagnetic pulse suppressor - Google Patents
Novel broadband transient electromagnetic pulse suppressor Download PDFInfo
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- CN106450617B CN106450617B CN201611080142.9A CN201611080142A CN106450617B CN 106450617 B CN106450617 B CN 106450617B CN 201611080142 A CN201611080142 A CN 201611080142A CN 106450617 B CN106450617 B CN 106450617B
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- electromagnetic pulse
- transient electromagnetic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
The invention discloses a novel broadband transient electromagnetic pulse suppressor, which comprises: the device comprises a metal resonant cavity, a transient electromagnetic pulse absorption device, a blocking and amplitude limiting circuit, a broadband radio frequency signal coupling device and a broadband radio frequency signal coupling circuit, wherein the transient electromagnetic pulse absorption device and the blocking and amplitude limiting circuit are arranged in the metal resonant cavity; the resonance cavity comprises a main cavity and an upper cavity matched and sealed with the main cavity, one end of the transient electromagnetic pulse absorption device is connected to the main cavity, the transient electromagnetic pulse absorption device is connected with the radio-frequency signal coupling device in series, the radio-frequency signal coupling device is connected to ports at two ends of the suppressor through an impedance matching transmission line, and the ports at two ends of the suppressor are respectively provided with a connector. The transient electromagnetic pulse suppressor is arranged at the feed cable connecting position of the wireless equipment, and can effectively suppress the transient electromagnetic pulse interference to ensure that the wireless equipment works all day long. Meanwhile, connectors are arranged at two ends of the suppressor, so that the suppressor can be conveniently installed.
Description
Technical Field
The invention relates to the field of electromagnetic compatibility and electromagnetic interference suppression, which comprises a surge protection technology and a transient electromagnetic pulse protection technology, in particular to a novel broadband transient electromagnetic pulse suppressor.
Background
With the rapid development of new information technologies, wireless devices have become a solid foundation for human society informatization. Wireless devices, especially large wireless infrastructures, are subject to various transient electromagnetic pulse interferences, the most harmful of which are those from natural lightning and man-made strong transient electromagnetic pulses.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel broadband transient electromagnetic pulse suppressor which has quick response and can better absorb transient electromagnetic pulses.
The purpose of the invention is realized by the following technical scheme: a novel broadband transient electromagnetic pulse suppressor comprising: the device comprises a metal resonant cavity, a transient electromagnetic pulse absorption device and a radio frequency signal coupling device, wherein the transient electromagnetic pulse absorption device and the radio frequency signal coupling device are arranged in the metal resonant cavity and are connected to form a transient electromagnetic pulse suppression circuit and a radio frequency broadband frequency-selective network; the metal resonant cavity comprises a main cavity body and an upper cavity body matched with the main cavity body, one end of the transient electromagnetic pulse absorption device is connected to the main cavity body, the transient electromagnetic pulse absorption device is connected with the radio-frequency signal coupling device in series, two ends of the radio-frequency signal coupling device are connected to ports at two ends of the suppressor through impedance matching transmission lines, and connectors are further arranged at ports at two ends of the suppressor respectively.
Preferably, the transient electromagnetic pulse absorbing device is a voltage switching type device.
Preferably, the voltage switching device comprises a first distributed capacitor, and the rf signal coupling device comprises a lumped capacitor, and the first distributed capacitor is connected in series with the lumped capacitor.
Preferably, the first distributed capacitor is further connected in series with a second distributed capacitor of the resonant cavity and the lumped capacitor of the frequency signal coupling device to form a radio frequency broadband frequency-selective network.
Preferably, the main chamber and the upper chamber comprise a rectangular body, a circular body, or a combination thereof.
Preferably, the main cavity and the upper cavity are connected through a fastener.
Preferably, a waterproof groove is formed in a connection fitting surface of the main cavity and the upper cavity, and a waterproof conductive rubber ring is arranged in the waterproof groove.
Preferably, the waterproof conductive rubber ring is of an O-shaped structure.
Preferably, the connector and the port are fixed by a flange.
Preferably, the connection between the connector and the port is fixed in a pressing tight fit manner.
The transient electromagnetic pulse absorption device and the radio frequency signal coupling device are arranged in the cavity, and the transient electromagnetic pulse absorption device and the radio frequency signal coupling device form a broadband radio frequency selective network and a transient electromagnetic pulse absorption suppression circuit together with the cavity through the matching of distribution parameters and collective parameters of the transient electromagnetic pulse absorption device and the radio frequency signal coupling device. The transient electromagnetic pulse suppressor is arranged at the feed cable connection position of the wireless equipment, so that the interference can be effectively suppressed, and the all-weather work of the wireless equipment is ensured. Meanwhile, connectors are arranged at two ends of the suppressor, so that the suppressor can be conveniently installed.
Drawings
FIG. 1 is an external structural view of a suppressor according to example 1 of the present invention,
figure 2 is a schematic diagram of the suppressor structure of example 1 of the present invention,
fig. 3 is a schematic view of the suppressor structure of embodiment 1 of the present invention.
Detailed Description
The invention is further described with reference to the drawings and the preferred embodiments.
Example one
Fig. 1-3 show an embodiment of the present invention, which is a novel broadband transient electromagnetic pulse suppressor, including: the device comprises a metal resonant cavity 10, and a transient electromagnetic pulse absorption device 13 and a radio frequency signal coupler 14 which are arranged in the metal resonant cavity; the metal resonant cavity 10 includes a main cavity 11 and an upper cavity 12 opposite to the main cavity 11, one end of the transient electromagnetic pulse absorber 13 is connected to the main cavity 11, the transient electromagnetic pulse absorber 13 is connected in series with the radio frequency signal coupler 14, the radio frequency signal coupler 14 is connected to ports at two ends of the suppressor through an impedance matching transmission line 15, and the ports at two ends of the suppressor are further respectively provided with a connector 19. Because the transient electromagnetic pulse absorption device 13 and the radio frequency signal coupling device 14 are arranged in the cavity, the transient electromagnetic pulse absorption device and the radio frequency signal coupling device form a broadband radio frequency selection network and a transient electromagnetic pulse absorption suppression circuit together with the cavity through the matching of the distribution parameters and the collective parameters of the two. The transient electromagnetic pulse suppressor is arranged at the feed cable connecting position of the wireless equipment, so that the interference can be effectively suppressed to ensure that the wireless equipment works all day long. Meanwhile, connectors are arranged at two ends of the suppressor, so that the suppressor can be conveniently installed.
In this embodiment, as shown in fig. 2, the transient electromagnetic pulse absorbing device 13 may be selected as a voltage switching type device. Because the energy distribution of the transient electromagnetic pulse is generally between DC and 1MHz, when the intensity of the transient electromagnetic pulse exceeds the conducting voltage of the voltage switch device, the switch device is conducted, more than 90 percent of the energy of the transient electromagnetic pulse is instantly discharged to the ground through the metal cavity, in addition, the distributed capacitance of the voltage switch device and the capacitance of the blocking radio frequency coupling device form a capacitance series voltage division circuit together, and most of the peak of the transient electromagnetic pulse is loaded on the switch device. Therefore, the peak of the transient electromagnetic pulse is effectively limited within a certain range (such as lower than 200 VDC), and the back-end facilities are protected from the peak impact of the transient electromagnetic pulse.
In this embodiment, the voltage switching device comprises a first distributed capacitor 17, the rf signal coupling device comprises a series capacitor 16, and the first distributed capacitor 17 is connected in series with the series capacitor 16. And a second distributed capacitor (not shown) of the resonant cavity together form a radio frequency broadband frequency-selective network, so that broadband radio frequency signals are transmitted with small loss and are matched in impedance. The novel suppressor can maintain good radio frequency performance such as return loss superior to 26dB and insertion loss superior to 0.1dB in a working broadband, and is slightly influenced by the change of ambient temperature.
In this embodiment, the main cavity 11 and the upper cavity 12 are connected by a fastener. Wherein the fastener may be a screw, a snap device, or the like. The metal resonant cavity can be a cuboid or a cylinder, and the upper cavity and the lower cavity are tightly matched to achieve the functions of frequency selection and impedance matching improvement.
In this embodiment, a waterproof groove is arranged on the connection fitting surface of the main cavity and the upper cavity, and a waterproof conductive rubber ring is arranged in the waterproof groove. The waterproof conductive rubber ring arranged in the waterproof groove can well play a waterproof role, and meanwhile, the conductive performance is achieved, so that the conductive rubber ring can effectively contact with the conductive rubber ring to achieve an inhibiting effect. The waterproof conductive rubber ring can adopt an O-shaped structure and has a better waterproof effect.
In this embodiment, the connector 19 is fixed to the port by a flange. As another alternative, the connection between the connector 19 and the port is secured by a press-fit.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. A novel broadband transient electromagnetic pulse suppressor, comprising: the device comprises a metal resonant cavity, a transient electromagnetic pulse absorption device and a radio frequency signal coupling device, wherein the transient electromagnetic pulse absorption device and the radio frequency signal coupling device are arranged in the metal resonant cavity and are connected to form a transient electromagnetic pulse suppression circuit and a radio frequency broadband frequency-selective network; the metal resonant cavity comprises a main cavity and an upper cavity matched with the main cavity, one end of the transient electromagnetic pulse absorption device is connected to the main cavity, the transient electromagnetic pulse absorption device is connected with the radio-frequency signal coupling device in series, two ends of the radio-frequency signal coupling device are connected to ports at two ends of the suppressor through impedance matching transmission lines, and connectors are further arranged at the ports at two ends of the suppressor respectively;
the transient electromagnetic pulse absorbing device is a voltage switch-type device, the voltage switch-type device comprises a first distributed capacitor, the radio-frequency signal coupling device comprises a lumped capacitor, the first distributed capacitor is connected with the lumped capacitor in series, the first distributed capacitor is connected with a second distributed capacitor of the resonant cavity in parallel, and the first distributed capacitor is connected with the lumped capacitor in series to form the radio-frequency broadband frequency-selective network.
2. The novel broadband transient electromagnetic pulse suppressor of claim 1, wherein said main cavity and said upper cavity are connected by a fastener, and said metal resonator cavity is a rectangular parallelepiped or a cylinder.
3. The novel broadband transient electromagnetic pulse suppressor according to claim 1, wherein a waterproof groove is arranged on the connecting and matching surface of said main cavity and said upper cavity, and a waterproof conductive rubber ring is arranged in said waterproof groove.
4. The novel broadband transient electromagnetic pulse suppressor of claim 3, wherein said waterproof conductive rubber ring is of an O-shaped configuration.
5. The novel broadband transient electromagnetic pulse suppressor of claim 1, wherein said connection between said connector and said port is by flange fixation.
6. The novel broadband transient electromagnetic pulse suppressor of claim 1 wherein said connection between said connector and said port is secured by an interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611080142.9A CN106450617B (en) | 2016-11-30 | 2016-11-30 | Novel broadband transient electromagnetic pulse suppressor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611080142.9A CN106450617B (en) | 2016-11-30 | 2016-11-30 | Novel broadband transient electromagnetic pulse suppressor |
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| Publication Number | Publication Date |
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| CN106450617A CN106450617A (en) | 2017-02-22 |
| CN106450617B true CN106450617B (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611080142.9A Active CN106450617B (en) | 2016-11-30 | 2016-11-30 | Novel broadband transient electromagnetic pulse suppressor |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110556804B (en) * | 2019-09-26 | 2024-06-07 | 深圳市速联技术有限公司 | Comprehensive protective device for radio frequency coaxial strong transient electromagnetic pulse |
| CN110556805A (en) * | 2019-09-26 | 2019-12-10 | 深圳市速联技术有限公司 | Ultra-wideband radio frequency coaxial lightning electromagnetic pulse protection method and device |
| CN111601493B (en) * | 2020-06-28 | 2021-02-23 | 深圳市速联技术有限公司 | Method and device for protecting strong electromagnetic pulse of radio frequency link |
| CN112994715B (en) * | 2021-02-03 | 2022-02-18 | 深圳市速联技术有限公司 | Ultra-wideband radio frequency link strong electromagnetic pulse protection method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201408889Y (en) * | 2009-03-20 | 2010-02-17 | 中航光电科技股份有限公司 | Connector with electromagnetic pulse resistance |
| CN205029337U (en) * | 2015-09-08 | 2016-02-10 | 中国石油天然气股份有限公司 | Protector for antenna feed system |
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| CN106450617A (en) | 2017-02-22 |
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