CN115173137A - Antenna feeder thunder and lightning electromagnetic pulse protection device with switching function - Google Patents
Antenna feeder thunder and lightning electromagnetic pulse protection device with switching function Download PDFInfo
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- CN115173137A CN115173137A CN202211020255.5A CN202211020255A CN115173137A CN 115173137 A CN115173137 A CN 115173137A CN 202211020255 A CN202211020255 A CN 202211020255A CN 115173137 A CN115173137 A CN 115173137A
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- shell
- equivalent impedance
- conductor
- electromagnetic pulse
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R31/00—Coupling parts supported only by co-operation with counterpart
- H01R31/06—Intermediate parts for linking two coupling parts, e.g. adapter
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/53—Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
- H01R13/6473—Impedance matching
- H01R13/6474—Impedance matching by variation of conductive properties, e.g. by dimension variations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
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- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses an antenna feeder lightning electromagnetic pulse protection device with a switching function, which comprises a shell and a discharge device, wherein the shell comprises a shell and a conductor arranged in an axial through hole of the shell; the electric conductor is in an asymmetric stepped structure, the middle part of the electric conductor is milled flat to form a contact surface, and the discharge device penetrates through the shell along the radial direction of the shell to be detachably connected with the shell and is electrically connected with the contact surface of the electric conductor; the first end and the second end of the conductor both adopt a stepped impedance transformation structure. The invention realizes the switching function of different types of interfaces, and saves the use cost and the space cost for communication equipment while meeting the lightning electromagnetic pulse protection requirement compared with the conventional lightning electromagnetic pulse protection component adopting a uniform radio frequency interface.
Description
Technical Field
The invention relates to the technical field of strong electromagnetic protection, in particular to an antenna feeder line lightning electromagnetic pulse protection device with a switching function.
Background
The communication equipment is an indispensable key electronic information device in modern war, and the application of its battle is extremely extensive, takes typical communication radio station as an example (mainly comprises antenna, antenna feeder and transceiver on the structure), and is easily suffered by the threat of thunder and lightning electromagnetic pulse environment when the actual operation is used. The lightning electromagnetic pulse is a common strong electromagnetic pulse which is naturally generated, and is easily coupled into an electronic module inside the communication equipment through an antenna of the communication equipment, so that the communication equipment is influenced by different degrees, such as interference, performance degradation and even damage. Generally, in order to overcome the above-mentioned threat, a protection method is adopted to add a lightning electromagnetic pulse protection component on an antenna feeder connecting an antenna and a transceiver so as to discharge electromagnetic pulse energy to the ground, thereby playing a role in protecting backend equipment. With the miniaturization, integration and modularization of communication systems, more and more communication equipment is adopting push-in blind-mate rf connectors (e.g., BMA connectors), and in many applications, BMA rf connectors are gradually replacing conventional screw-in rf connectors (e.g., BNC connectors, N connectors and TNC connectors), which makes different types of rf connectors simultaneously used in antenna systems. In order to match different types of connectors, a large number of radio frequency adapters have to be used for switching, which undoubtedly increases the use cost and the waste of space.
Disclosure of Invention
The invention aims to provide an antenna feeder lightning electromagnetic pulse protection device with a switching function, which is used for solving the problems of cost increase and space occupation caused by the need of adding a radio frequency adapter when different types of radio frequency connectors are simultaneously used in an antenna system in the prior art.
The invention solves the problems through the following technical scheme:
an antenna feeder lightning electromagnetic pulse protection device with a switching function comprises a shell and a discharge device, wherein the shell comprises a shell and a conductor arranged in an axial through hole of the shell, the conductor is fixed with the inner wall of the shell through an insulation sleeve, a first interface is formed by the first end of the conductor and the first end of the shell, and a second interface is formed by the second end of the conductor and the second end of the shell; the electric conductor is in an asymmetric stepped structure, the middle part of the electric conductor is milled flat to form a contact surface, and the discharge device penetrates through the shell along the radial direction of the shell to be detachably connected with the shell and is electrically connected with the contact surface of the electric conductor; the first end and the second end of the conductor both adopt a stepped impedance transformation structure.
The two ends of the conductor respectively form a first interface and a second interface with the two ends of the shell, and the first interface and the second interface are different types of radio frequency interfaces to realize the switching function of the different types of interfaces. When the electromagnetic pulse interference of thunder and lightning passes through the product, the discharge element in the discharge device is broken down, a path is formed between the inner conductor and the shell, and the shell is connected with the ground, so that the electromagnetic pulse energy is discharged to the ground, and the effect of protecting rear-end equipment is achieved. The structure adopts an asymmetric stepped impedance matching structure, so that the insertion loss of the impedance matching structure can keep a lower value in a wider working frequency band, and the axial size of the inner conductor is shortened, thereby reducing the volume of the whole assembly.
The electric conductor is divided into a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, a seventh step and an eighth step, the equivalent impedance of the first step is 50 omega, the equivalent impedance of the second step is 50 omega, the equivalent impedance of the third step is 50 omega, the equivalent impedance of the fourth step is 70 omega-80 omega, the equivalent impedance of the fifth step is 75 omega-85 omega, the equivalent impedance of the sixth step is 90 omega-100 omega, the equivalent impedance of the seventh step is 70 omega-80 omega, and the equivalent impedance of the eighth step is 50 omega.
The technical indexes that can be realized are as follows:
1) Within the short wave frequency range (3 MHz-30 MHz), the return loss is better than 38dB, and the insertion loss is less than 0.1dB;
2) In an ultra-short wave frequency range (30 MHz-300 MHz), the return loss is better than 28dB, and the insertion loss is less than 0.15dB;
3) In the frequency range of DC-800MHz, the return loss is better than 20dB, the insertion loss is less than 0.24dB, and the first end or the second end of the conductor is provided with a conductive tube which is electrically connected with the conductor.
The discharge device comprises a rotary seat, a clamping fixture, a contact piece, a discharge tube, a contact seat and a first insulating sleeve, wherein the upper side of the rotary seat is provided with a screw cap, the lower side of the rotary seat is of a hollow structure with threads, the clamping fixture is connected with one end of the discharge tube through the contact piece and is placed in the hollow structure of the rotary seat, the other end of the discharge tube is connected with one end of the contact seat and is placed in the first insulating sleeve, and the other end of the contact seat is connected with the contact surface.
When the electromagnetic pulse interference of thunder and lightning passes through the product, the discharge tube is broken down, a path is formed between the inner conductor and the shell, and as the shell is connected with the ground, the electromagnetic pulse energy is released to the ground to play a role in protecting rear-end equipment, and meanwhile, gas discharge tubes with different discharge characteristics can be adopted in the discharge device, so that the rapid release of 8/20 thunder and lightning current waveforms with the peak current of 20kA is realized, and the residual voltage is kept at a lower level.
The shell is provided with a fixing piece for being fixedly connected with other equipment.
The fixing piece is a flange plate.
The shell is made of metal materials.
One end of the conductor adopts a stepped impedance transformation structure, and the other end of the conductor is replaced by a gradual change type impedance matching structure.
Preferably, the conductor is divided into a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, a seventh step, an eighth step and a ninth step, the equivalent impedance of the first step is 50 Ω, the equivalent impedance of the second step is 50 Ω, the equivalent impedance of the third step is 50 Ω, the equivalent impedance of the fourth step is 70 Ω -80 Ω, the equivalent impedance of the fifth step is 75 Ω -85 Ω, the equivalent impedance of the sixth step is 90 Ω -100 Ω, the equivalent impedance of the seventh step is 50 Ω, the equivalent impedance of the eighth step is 50 Ω, and the equivalent impedance of the ninth step is 35 Ω -40 Ω.
The realized technical indexes are as follows:
1) Within the short wave frequency range (3 MHz-30 MHz), the return loss is better than 35dB, and the insertion loss is less than 0.02dB;
2) In an ultra-short wave frequency range (30 MHz-300 MHz), the return loss is better than 30dB, and the insertion loss is less than 0.15dB;
3) In the DC-1GHz frequency range, the return loss is better than 20dB, and the insertion loss is less than 0.7dB.
Furthermore, when the first interface and the second interface adopt another interface type, for example, the first interface adopts a BMA interface, the second interface adopts a TNC interface, and the stepped equivalent impedance value or the equivalent impedance range is adopted, the implemented technical indexes include:
1) Within the short wave frequency range (3 MHz-30 MHz), the return loss is better than 35dB, and the insertion loss is less than 0.02dB;
2) In an ultra-short wave frequency range (30 MHz-300 MHz), the return loss is better than 30dB, and the insertion loss is less than 0.15dB;
3) In the frequency range of DC-660MHz, the return loss is better than 20dB, and the insertion loss is less than 0.25dB.
Compared with the prior art, the invention has the following advantages and beneficial effects:
(1) The invention realizes the switching function of different types of interfaces, and compared with the conventional lightning electromagnetic pulse protection component adopting a uniform radio frequency interface, the lightning electromagnetic pulse protection component meets the lightning electromagnetic pulse protection requirement and saves the use cost and the space cost for communication equipment.
(2) The invention adopts an asymmetric stepped impedance matching structure in structure, so that the insertion loss can be kept at a lower value in a wider working frequency band, and the axial size of the inner conductor is shortened, thereby reducing the volume of the whole assembly.
(3) The invention can adopt gas discharge tubes with different discharge characteristics to realize the rapid discharge of 8/20 lightning current waveform with 20kA peak current, and the residual voltage is kept at a lower level.
Drawings
FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a discharge device according to the present invention;
FIG. 4 is an exploded view of the discharge device of the present invention;
FIG. 5 is a schematic structural view of an electrical conductor of the present invention;
FIG. 6 is a schematic diagram of equivalent impedance of the first embodiment of the present invention;
FIG. 7 is a graph of measured return loss and insertion loss data for a first embodiment of the invention;
FIG. 8 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 9 is a cross-sectional view of a second embodiment of the present invention;
FIG. 10 is a schematic diagram of equivalent impedance of a second embodiment of the present invention;
FIG. 11 is a graph of measured return loss and insertion loss data for a second embodiment of the present invention;
FIG. 12 is a schematic structural view of a third embodiment of the present invention;
FIG. 13 is a cross-sectional view of a third embodiment of the present invention;
figure 14 is a graph of return loss and insertion loss data measured in a third embodiment of the present invention.
Wherein, 1-shell; 2-a discharge device; 3-a first interface; 4-a second interface; 11-a housing; 12-an electrical conductor; 13-a conductive tube; 14-a second insulating sleeve; 15-a third insulating sleeve; 16-a fourth insulating sleeve; 17-a flange plate; 21-a rotating base; 22-clamping the clamp; 23-a contact patch; 24-a discharge vessel; 25-a contact base; 26-a first insulating sleeve; 121-insert pin; 122-a jack.
Detailed Description
The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.
Example 1:
referring to fig. 1 and 2, an antenna feeder lightning electromagnetic pulse protection device with a switching function includes a housing 1 and a discharge device 2, where the housing 1 includes an outer shell 11 and a conductor 12 disposed in an axial through hole of the housing 1, the conductor 12 is fixed to an inner wall of the outer shell 11 through an insulating sleeve, a first end of the conductor 12 and a first end of the outer shell 11 form a first interface 3, and a second end of the conductor 12 and a second end of the outer shell 11 form a second interface 4; the electric conductor 12 is in an asymmetric stepped structure, the middle part of the electric conductor 12 is milled flat to form a contact surface, the discharge device 2 penetrates through the shell 1 along the radial direction of the shell 1 to be detachably connected with the shell 11 and is electrically connected with the contact surface of the electric conductor 12, and the discharge device 2 is insulated from the shell 11; the first end and the second end of the conductor 12 both adopt a stepped impedance transformation structure.
The two ends of the conductor 12 and the two ends of the housing 1 form a first interface 3 and a second interface 4 respectively, and the first interface 3 and the second interface 4 are radio frequency interfaces of different types, so that the switching function of the interfaces of different types is realized. When the electromagnetic pulse interference of thunder and lightning passes through the product, the discharge element in the discharge device 2 is broken down, a path is formed between the conductor 12 and the shell 11, and the electromagnetic pulse energy is discharged to the ground due to the connection of the shell 11 and the ground, so that the function of protecting rear-end equipment is achieved. The structure adopts an asymmetric stepped impedance matching structure, so that the insertion loss of the impedance matching structure can keep a lower value in a wider working frequency band, and the axial size of the inner conductor is shortened, thereby reducing the volume of the whole device. The first interface 3 and the second interface 4 can be connected with an antenna feeder line, a transceiver and other devices to realize lightning electromagnetic pulse protection.
Preferably, as shown in fig. 5, two ends of the conductive body 12 are a pin 121 and a jack 122, respectively, the pin 121 and one end of the housing 1 form a first interface 3, the jack 122 and the other end of the housing 1 form a second interface 4, and the first interface 3 and the second interface 4 are different types of radio frequency interfaces to implement switching functions of different types of interfaces. As shown in fig. 1, the first interface 3 is a BMA interface, and the second interface 4 is an N interface, but the invention is not limited thereto. Similarly, the two ends of the conductive body 12 may be pins or sockets, or other connecting structures, as long as they can form connector interfaces with the two ends of the housing 1, which is not limited in the present invention.
Preferably, as shown in fig. 6, the conductive body 12 is divided into a first step A1, a second step A2, a third step A3, a fourth step A4, a fifth step A5, a sixth step A6, a seventh step A7 and an eighth step A8, the equivalent impedance of the first step A1 is 50 Ω, the equivalent impedance of the second step A2 is 50 Ω, the equivalent impedance of the third step A3 is 50 Ω, the equivalent impedance of the fourth step A4 is 70 Ω -80 Ω, the equivalent impedance of the fifth step A5 is 75 Ω -85 Ω, the equivalent impedance of the sixth step A6 is 90 Ω -100 Ω, the equivalent impedance of the seventh step A7 is 70 Ω -80 Ω, and the equivalent impedance of the eighth step A8 is 50 Ω.
The technical indexes that can be realized are as follows:
1) 3MHz-30MHz in the short wave frequency range, return loss is better than 38dB, and insertion loss is less than 0.1dB;
2) The ultra-short wave frequency range is 30MHz-300MHz, the return loss is better than 28dB, and the insertion loss is less than 0.15dB;
3) In the DC-800MHz frequency range, return loss is better than 20dB, and insertion loss is less than 0.24dB, as shown in FIG. 7.
Preferably, the first end or the second end of the conductor 12 is provided with a conductive tube 13, and the conductive tube 13 is electrically connected with the conductor 12. The conductor 12 is fixed with the inside of the housing 11 by an insulating sleeve, the insulating sleeve includes a second insulating sleeve 14, a third insulating sleeve 15 and a fourth insulating sleeve 16, as shown in fig. 2, the conductive tube 13 is arranged outside one end of the conductor 12 for clamping the second insulating sleeve 14. The conductive tube 13 and the conductor 12 are made of conductive materials.
Preferably, as shown in fig. 3 and 4, the discharge device 2 includes a rotating base 21, a clamping fixture 22, a contact piece 23, a discharge tube 24, a contact base 25 and a first insulating sleeve 26, the upper side of the rotating base 21 is a nut, the lower side of the rotating base 21 is a hollow structure with threads, the clamping fixture 22 is connected with one end of the discharge tube 24 through the contact piece 23 and is placed in the hollow structure of the rotating base 21, the other end of the discharge tube 24 is connected with one end of the contact base 25 and is placed in the first insulating sleeve 26, the other end of the contact base 25 is connected with the contact surface, and the first insulating sleeve 26 is connected with the outer shell 11.
When the lightning electromagnetic pulse interference passes through the product, the discharge tube 24 is broken down, a path is formed between the conductor 12 and the outer shell 11, and the outer shell 11 is connected with the ground, so that the electromagnetic pulse energy is discharged to the ground to play a role of protecting rear-end equipment, meanwhile, gas discharge tubes with different discharge characteristics can be adopted in the discharge device 2, the rapid discharge of 8/20 lightning current waveform with the peak current of 20kA is realized, and the residual voltage is kept at a lower level.
Preferably, the housing 1 is provided with a fixing member 17 for fixedly connecting with other equipment. Preferably, the fixing member 17 is a flange, and may be integrally formed with the housing 1. The shell 1 is made of metal materials.
Example 2:
on the basis of embodiment 1, one end of the conductive body 12 adopts a stepped impedance transformation structure, and the other end is replaced by a gradual impedance matching structure, and the tapered cavity is inserted between two cylindrical cavities to enable the outer conductors at the left and right ends of the cavities to be connected in a transition manner, as shown in fig. 9.
As shown in fig. 10, when the first interface 3 adopts a BMA interface, and the second interface 4 adopts a BNC interface, the electrical conductor 12 is divided into a first step A1, a second step A2, a third step A3, a fourth step A4, a fifth step A5, a sixth step A6, a seventh step A7, an eighth step A8, and a ninth step A9, where the equivalent impedance of the first step A1 is 50 Ω, the equivalent impedance of the second step A2 is 50 Ω, the equivalent impedance of the third step A3 is 50 Ω, the equivalent impedance of the fourth step A4 is 70 Ω to 80 Ω, the equivalent impedance of the fifth step A5 is 75 Ω to 85 Ω, the equivalent impedance of the sixth step A6 is 90 Ω to 100 Ω, the equivalent impedance of the seventh step A7 is 50 Ω, the equivalent impedance of the eighth step A8 is 50 Ω, and the equivalent impedance of the ninth step A9 is 35 to 40.
The realized technical indexes are as follows:
1) Within the short wave frequency range (3 MHz-30 MHz), the return loss is better than 35dB, and the insertion loss is less than 0.02dB;
2) In an ultra-short wave frequency range (30 MHz-300 MHz), the return loss is better than 30dB, and the insertion loss is less than 0.15dB;
3) In the DC-1GHz frequency range, the return loss is better than 20dB, and the insertion loss is less than 0.7dB. As shown in fig. 11.
Fig. 8 and 9 are schematic structural diagrams illustrating that the first interface 3 adopts a BMA interface, the second interface 4 adopts a BNC interface, and the BNC terminal adopts a gradual impedance matching principle, but the present invention is not limited to the two interfaces.
Example 3:
on the basis of embodiment 2, the first interface 3 adopts a BMA interface, and the second interface 4 adopts a TNC interface, and at this time, the equivalent impedance ranges of the first step to the ninth step are the same, and the realized technical indexes are as follows:
1) Within the short wave frequency range (3 MHz-30 MHz), the return loss is better than 35dB, and the insertion loss is less than 0.02dB;
2) In an ultra-short wave frequency range (30 MHz-300 MHz), the return loss is better than 30dB, and the insertion loss is less than 0.15dB;
3) In the frequency range of DC-660MHz, the return loss is better than 20dB, and the insertion loss is less than 0.25dB. As shown in fig. 14.
Fig. 12 and fig. 13 are schematic structural diagrams illustrating that the first interface 3 adopts a BMA interface, the second interface 4 adopts a TNC interface, and the TNC terminal adopts a gradual impedance matching principle, but the present invention is not limited to the two interfaces.
The invention realizes the switching function of different interfaces, including but not limited to the switching of the BMA radio frequency interface to other interfaces (an N radio frequency interface, a BNC radio frequency interface or a TNC radio frequency interface), and realizes the functions of electromagnetic energy discharge and back-end equipment protection.
Although the invention has been described herein with reference to the illustrated embodiments thereof, which are intended to be the only preferred embodiments of the invention, it is not intended that the invention be limited thereto, since many other modifications and embodiments will be apparent to those skilled in the art and will be within the spirit and scope of the principles of this disclosure.
Claims (9)
1. The lightning electromagnetic pulse protection device is characterized by comprising a shell and a discharge device, wherein the shell comprises a shell and a conductor arranged in an axial through hole of the shell, the conductor is fixed with the inner wall of the shell through an insulating sleeve, a first interface is formed by the first end of the conductor and the first end of the shell, and a second interface is formed by the second end of the conductor and the second end of the shell; the electric conductor is in an asymmetric stepped structure, the middle part of the electric conductor is milled flat to form a contact surface, and the discharge device penetrates through the shell along the radial direction of the shell to be detachably connected with the shell and is electrically connected with the contact surface of the electric conductor; the first end and the second end of the conductor both adopt a stepped impedance transformation structure.
2. The lightning electromagnetic pulse protection device of an antenna feeder with a switching function as claimed in claim 1, wherein the electrical conductor is divided into a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, a seventh step and an eighth step, the equivalent impedance of the first step is 50 Ω, the equivalent impedance of the second step is 50 Ω, the equivalent impedance of the third step is 50 Ω, the equivalent impedance of the fourth step is 70 Ω -80 Ω, the equivalent impedance of the fifth step is 75 Ω -85 Ω, the equivalent impedance of the sixth step is 90 Ω -100 Ω, the equivalent impedance of the seventh step is 70 Ω -80 Ω, and the equivalent impedance of the eighth step is 50 Ω.
3. The antenna feeder lightning electromagnetic pulse protection device with the switching function as claimed in claim 1, wherein a conductive tube is disposed at the first end or the second end of the conductor, and the conductive tube is electrically connected to the conductor.
4. The antenna feeder lightning electromagnetic pulse protector with switching function according to claim 1, wherein the discharging device comprises a rotary base, a clamping fixture, a contact piece, a discharge tube, a contact base and a first insulating sleeve, the upper side of the rotary base is a nut, the lower side of the rotary base is a hollow structure with threads, the clamping fixture is connected with one end of the discharge tube through the contact piece and placed in the hollow structure of the rotary base, the other end of the discharge tube is connected with one end of the contact base and placed in the first insulating sleeve, and the other end of the contact base is connected with the contact surface.
5. An antenna feeder lightning electromagnetic pulse protection device with a switching function as claimed in claim 1, wherein a fixing member is disposed on the housing for fixedly connecting with other equipment.
6. The antenna feeder lightning electromagnetic pulse protector with switching function of claim 5, wherein the fixing member is a flange.
7. The antenna feeder lightning electromagnetic pulse protection device with switching function as claimed in claim 1, wherein the housing is made of metal.
8. The antenna feeder lightning electromagnetic pulse protector with switching function according to any one of claims 1, 3-7, characterized in that one end of the conductor adopts a stepped impedance transformation structure, and the other end is replaced by a gradual impedance matching structure.
9. The lightning electromagnetic pulse protection device of an antenna feeder with a switching function as claimed in claim 8, wherein the electrical conductor is divided into a first step, a second step, a third step, a fourth step, a fifth step, a sixth step, a seventh step, an eighth step and a ninth step, the equivalent impedance of the first step is 50 Ω, the equivalent impedance of the second step is 50 Ω, the equivalent impedance of the third step is 50 Ω, the equivalent impedance of the fourth step is 70 Ω -80 Ω, the equivalent impedance of the fifth step is 75 Ω -85 Ω, the equivalent impedance of the sixth step is 90 Ω -100 Ω, the equivalent impedance of the seventh step is 50 Ω, the equivalent impedance of the eighth step is 50 Ω, and the equivalent impedance of the ninth step is 35 Ω -40 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020255.5A CN115173137A (en) | 2022-08-24 | 2022-08-24 | Antenna feeder thunder and lightning electromagnetic pulse protection device with switching function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020255.5A CN115173137A (en) | 2022-08-24 | 2022-08-24 | Antenna feeder thunder and lightning electromagnetic pulse protection device with switching function |
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| Publication Number | Publication Date |
|---|---|
| CN115173137A true CN115173137A (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211020255.5A Pending CN115173137A (en) | 2022-08-24 | 2022-08-24 | Antenna feeder thunder and lightning electromagnetic pulse protection device with switching function |
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| CN (1) | CN115173137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117810693A (en) * | 2024-03-01 | 2024-04-02 | 成都信息工程大学 | Novel antenna feeder direct lightning striking/induction lightning protection device based on waveguide |
-
2022
- 2022-08-24 CN CN202211020255.5A patent/CN115173137A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117810693A (en) * | 2024-03-01 | 2024-04-02 | 成都信息工程大学 | Novel antenna feeder direct lightning striking/induction lightning protection device based on waveguide |
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