CN115764440A - Lightning protection connector for high-bandwidth radio-frequency signals - Google Patents
Lightning protection connector for high-bandwidth radio-frequency signals Download PDFInfo
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- CN115764440A CN115764440A CN202211381835.7A CN202211381835A CN115764440A CN 115764440 A CN115764440 A CN 115764440A CN 202211381835 A CN202211381835 A CN 202211381835A CN 115764440 A CN115764440 A CN 115764440A
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- radio frequency
- gas discharge
- discharge tube
- tube assembly
- connecting groove
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a lightning protection connector for high-bandwidth radio frequency signals, which comprises a middle shell, wherein one end of the middle shell is connected with a first radio frequency interface shell, the other end of the middle shell is connected with a second radio frequency interface shell, and a compensation cavity is arranged in the middle of the middle shell. A contact element penetrates through the compensation cavity, one end of the contact element is connected with a first radio frequency interface, and the other end of the contact element is connected with a second radio frequency interface; a gas discharge tube assembly disposed within the compensation cavity in a direction perpendicular to the contact. The connector designed by the invention has the capabilities of strong vibration resistance, water resistance, dust prevention, salt fog prevention, mold prevention, high use temperature range and the like, and can be used in severe environment for a long time.
Description
Technical Field
The invention relates to the technical field of radio frequency signal lightning protection, in particular to a lightning protection connector for a high-bandwidth radio frequency signal.
Background
With the advent of the information age, microelectronic devices have been widely used in various fields, wherein secondary effects caused by lightning currents become more prominent and the range of danger is larger, resulting in immeasurable losses, wherein the most serious disasters include electronic and electrical devices in the fields of communication, radio and television, finance, medical treatment and the like.
The radio frequency lightning protection connector can be arranged between an antenna feeder line and equipment of the system, has the functions of transmitting radio frequency signals and restraining lightning surges, has the advantages of simple structure, convenient use, firmness, reliability, wide use frequency band and the like, and can be used for directly disconnecting a plug and a socket of the original radio frequency connector and connecting the radio frequency lightning protection connector.
At present, the common principles of radio frequency signal lightning protection include the gas discharge tube principle and the 1/4 wavelength principle. The principle of the gas discharge tube is that once pulse overvoltage reaches pulse breakdown voltage of the discharge tube, interelectrode electric field strength exceeds breakdown strength of gas, gap discharge is caused, gas in the discharge tube is ionized, the discharge tube is conducted, and the original open circuit state is changed into the principle of approximate short circuit, so that lightning surge on a transmission line is restrained. The radio frequency signal protection bandwidth of the 1/4 wavelength principle is narrow, while the radio frequency signal protection bandwidth of the gas discharge tube principle is wide, but the radio frequency signal protection bandwidth can generally realize DC-3 GHz, but when the radio frequency signal transmission bandwidth reaches DC-5 GHz or above, the lightning protection function of the radio frequency signal protection bandwidth can cause the problem that the radio frequency signal cannot be normally transmitted.
Disclosure of Invention
The invention aims to design a lightning protection connector for high-bandwidth radio-frequency signals, which can solve the problem that the radio-frequency signals cannot be normally transmitted when the frequency is DC-5 GHz or above; meanwhile, the connector designed by the invention has the capabilities of strong vibration resistance, water resistance, dust prevention, salt mist resistance, mould prevention, high use temperature range and the like, and can be used in severe environment for a long time.
The technical scheme for realizing the purpose of the invention is as follows: a lightning protected connector for high bandwidth radio frequency signals, comprising:
the middle shell is connected with a first radio frequency interface shell at one end and a second radio frequency interface shell at the other end, and a compensation cavity is arranged in the middle of the middle shell.
A contact element penetrates through the compensation cavity, one end of the contact element is connected with a first radio frequency interface, and the other end of the contact element is connected with a second radio frequency interface;
a gas discharge tube assembly disposed within the compensation cavity in a direction perpendicular to the contact.
In an embodiment of the middle housing, the middle housing is provided with a first connecting groove, a second connecting groove, a third connecting groove and a fourth connecting groove, which are communicated with the compensation cavity.
The first connecting groove and the second connecting groove are located on the same axis, and the third connecting groove is used for installing and fixing the gas discharge tube assembly.
Furthermore, a diode screw is connected to the third connecting groove in a threaded manner, the diode screw is in contact with an electrode at the upper end of the gas discharge tube assembly, and an electrode at the lower end of the gas discharge tube assembly is in contact with a gas discharge tube assembly limiting table processed on the contact element.
Still further, the lightning protection connector includes a crimp terminal mounted on the fourth connection groove via a ground screw.
Preferably, a spring washer is disposed between the grounding screw and the crimp terminal, and a first sealing member is disposed between the third connecting groove and the diode screw.
In another embodiment of the middle housing, a second sealing member is disposed at a connection between the middle housing and the first and second radio frequency interface housings.
In one embodiment of the contact member, a gas discharge tube assembly limiting table is machined on the contact member at a position, which is located in the compensation cavity and close to one side of the gas discharge tube assembly, and an insulating member limiting table is respectively machined on two sides of the gas discharge tube assembly limiting table.
In one embodiment of the gas discharge tube assembly, the gas discharge tube assembly comprises 2 gas discharge tubes connected in series, and the interelectrode capacitance of the gas discharge tube assembly is less than or equal to 0.6pF.
In a modified embodiment of the lightning protection connector, the first radio frequency interface and the second radio frequency interface are standard radio frequency interfaces of any one of an N type, a TNC type and an SMA type.
In a modified embodiment of the lightning protection connector, the intermediate shell, the first radio frequency interface shell and the second radio frequency interface shell are made of copper alloy nickel plating or ternary alloy.
Compared with the prior art, the invention has the beneficial effects that: according to the lightning protection connector, 2 gas discharge tube assemblies are welded in series, the interelectrode capacitance of the gas discharge tube assemblies is lower than 0.6pF, meanwhile, the gas discharge tube assemblies and the compensation cavity in the middle shell are mutually matched in a compensation mode, the fact that the frequency range of radio-frequency signals transmittable by the connector is up to DC-5 GHz, the voltage standing wave ratio is smaller than or equal to 1.2, and the insertion loss is smaller than or equal to 0.15dB is guaranteed.
Meanwhile, the lightning protection connector designed by the invention has the capabilities of strong vibration resistance, water resistance, dust resistance, salt mist resistance, mould resistance, high service temperature range and the like through the spring washer, the first sealing element, the second sealing element, the insulating element limiting table and the like, and can be used in severe environments for a long time.
Drawings
In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings used in the description of the embodiment will be briefly introduced below.
FIG. 1 is a perspective view of a lightning protection connector in an embodiment;
FIG. 2 is a schematic cross-sectional view of a lightning protection connector in an embodiment;
FIG. 3 is a schematic view of an intermediate housing in an embodiment;
FIG. 4 is a schematic view of a contact in an embodiment;
FIG. 5 is a schematic view of a diode screw in an embodiment;
wherein, 1, a contact element; 1-1, an insulating part limiting table; 1-2, a gas discharge tube assembly limiting table; 2. a middle housing; 3. a gas discharge tube assembly; 2-1, a first connecting groove; 2-2, a second connecting groove; 2-3, a third connecting groove; 2-4, a fourth connecting groove; 2-5, compensating the cavity; 4. a diode screw; 4-1, an annular groove; 5. a first seal member; 6. a second seal member; 7. a second radio frequency interface; 8. a spring washer; 9. a ground screw; 10. a crimp terminal; 11. a first radio frequency interface; 100. a first radio frequency interface housing; 200. a second radio frequency interface housing; 300. an insulating member.
Detailed Description
The invention will be further described with reference to specific embodiments, and the advantages and features of the invention will become apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
The present embodiment discloses a lightning protection connector for high bandwidth radio frequency signals, and as shown in fig. 1, the lightning protection connector includes a contact 1, a middle housing 2, a gas discharge tube assembly 3, a first radio frequency interface housing 100, and a second radio frequency interface housing 200.
As shown in fig. 2 and 3, the middle housing 2 has one end connected to the first radio frequency interface housing 100 and the other end connected to the second radio frequency interface housing 200. In this embodiment, the middle housing 2 is connected to the first radio frequency interface housing 100 and the second radio frequency interface housing 200 in an interference connection manner, which may be connected in a fastening manner or a threaded connection manner, and the connection manner is not limited in this embodiment.
Referring to fig. 2 and 3, a compensation cavity 2-5 is arranged in the middle of the middle housing 2, the contact element 1 penetrates through the compensation cavity 2-5, and one end of the contact element 1 is connected with a first radio frequency interface 11 while the other end is connected with a second radio frequency interface 7.
Referring to fig. 2, the gas discharge tube assembly 3 is disposed within the compensation chamber 2-5 in a direction perpendicular to the contact member 1. More specifically, the gas discharge tube assembly 3 has an upper end electrode fixed to the intermediate housing 2 and a lower end electrode in contact with the contact 1.
In an embodiment of the middle shell 2, referring to fig. 3, the middle shell 2 is provided with a first connecting groove 2-1, a second connecting groove 2-2, a third connecting groove 2-3, and a fourth connecting groove 2-4, which are communicated with the compensation cavity 2-5. In this embodiment, the first connecting groove 2-1 and the second connecting groove 2-2 may be holes formed along a radial direction of the compensation chamber 2-5, and the third connecting groove 2-3 and the fourth connecting groove 2-4 may be holes formed along a longitudinal direction of the compensation chamber 2-5.
More specifically, the first connecting groove 2-1 and the second connecting groove 2-2 are located on the same axis, and are used for penetrating the contact 1 through the compensation cavity 2-5. The third connecting groove 2-3 and the fourth connecting groove 2-4 may be located on the same axis or on different axes, and the third connecting groove 2-3 is used for mounting and fixing the gas discharge tube assembly 3.
Further, as shown in fig. 1 and 2, a diode screw 4 is screwed into the third connecting groove 2-3, and the diode screw 4 contacts with the upper electrode of the gas discharge tube assembly 3, and the lower electrode of the gas discharge tube assembly 3 contacts with the gas discharge tube assembly stopper 1-2 formed on the contact member 1. Preferably, as shown in fig. 5, an annular groove 4-1 is formed on the diode screw 4, a first sealing member 5 is fitted in the annular groove 4-1, and the first sealing member 5 is an O-ring, such as an O-rubber ring.
Further, referring to fig. 2, the lightning protection connector comprises a crimp terminal 10, the crimp terminal 10 being mounted on said fourth connection groove 2-4 via a ground screw 9.
Further, referring to fig. 2, the grounding screw 9 is in contact with the middle housing 2, and a spring washer 8 is disposed between the grounding screw 9 and the press-contact terminal 10 for fastening, wherein the spring washer 8 is made of stainless steel wire to prevent salt fog corrosion, and the same as that of the spring washer 8The cross-sectional area of the crimp terminal 10 is 4mm when in use 2 The ground lead is used for discharging transient lightning energy.
In another embodiment of the middle housing 2, as shown in fig. 2, a second sealing element 6 is disposed at a connection between the middle housing 2 and the first radio frequency interface housing 100 and a connection between the middle housing and the second radio frequency interface housing 200, and the second sealing element 6 is an O-ring, such as an O-ring rubber.
In one embodiment of the contact member 1, the contact member 1 is of an integral structure design, and referring to fig. 4, a gas discharge tube assembly limiting table 1-2 is machined on the contact member 1 at a position inside the compensation cavity 2-5 and close to one side of the gas discharge tube assembly 3, and an insulating member limiting table 1-1 is respectively machined on two sides of the gas discharge tube assembly limiting table 1-2.
In one embodiment of the contact 1, referring to fig. 2, an insulating member 300 is sleeved between the contact 1 and the middle housing 2, the first radio frequency interface housing 100, and the second radio frequency interface housing 200.
In one embodiment of the gas discharge tube assembly 3, the gas discharge tube assembly 3 comprises 2 gas discharge tubes connected in series, and the interelectrode capacitance of the gas discharge tube assembly 3 is less than or equal to 0.6pF.
In a modified embodiment of the lightning protection connector, the first radio frequency interface 11 and the second radio frequency interface 7 are standard radio frequency interfaces of any one of an N type, a TNC type, and an SMA type.
In a modified embodiment of the lightning protection connector, the intermediate shell 2, the first rf interface shell and the second rf interface shell are made of high-strength copper alloy (such as copper alloy nickel plating) or ternary alloy, so that the overall structural strength of the product is high.
According to the lightning protection connector designed by the invention, 2 gas discharge tubes are adopted for the gas discharge tube assembly 3 to be welded in series, the interelectrode capacitance of the gas discharge tube assembly can be lower than 0.6pF, meanwhile, the gas discharge tube assembly and a compensation cavity in the middle shell are mutually compensated and matched, the frequency band of a radio frequency signal which can be transmitted by the connector can reach DC-5 GHz, the voltage standing wave ratio is less than or equal to 1.2, and the insertion loss is less than or equal to 0.15dB.
Meanwhile, the lightning protection connector designed by the invention has the capabilities of strong vibration resistance, water resistance, dust resistance, salt mist resistance, mould resistance, high use temperature range and the like through the spring washer, the first sealing element, the second sealing element, the insulating element limiting table and the like, and can be used in a severe environment for a long time (more than 96 hours) to prevent the connector from being corroded by salt mist.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, which is intended to cover any modifications, equivalents, improvements, etc. within the spirit and scope of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A lightning protected connector for high bandwidth radio frequency signals, comprising:
the radio frequency connector comprises a middle shell (2), wherein one end of the middle shell (2) is connected with a first radio frequency interface shell, the other end of the middle shell is connected with a second radio frequency interface shell, and a compensation cavity (2-5) is arranged in the middle of the middle shell (2);
a contact element (1) penetrates through the compensation cavity (2-5), one end of the contact element (1) is connected with a first radio frequency interface (11), and the other end of the contact element is connected with a second radio frequency interface (7);
a gas discharge tube assembly (3), the gas discharge tube assembly (3) being disposed within the compensation cavity (2-5) in a direction perpendicular to the contact member (1).
2. The lightning protected connector for high bandwidth radio frequency signals according to claim 1, wherein: the middle shell (2) is provided with a first connecting groove (2-1), a second connecting groove (2-2), a third connecting groove (2-3) and a fourth connecting groove (2-4) which are communicated with the compensation cavity (2-5);
the first connecting groove (2-1) and the second connecting groove (2-2) are positioned on the same axis, and the third connecting groove (2-3) is used for installing and fixing the gas discharge tube assembly (3).
3. The lightning protected connector for high bandwidth radio frequency signals according to claim 2, characterized by: and a diode screw (4) is connected to the third connecting groove (2-3) in a threaded manner, the diode screw (4) is in contact with an upper end electrode of the gas discharge tube assembly (3), and a lower end electrode of the gas discharge tube assembly (3) is in contact with a gas discharge tube assembly limiting table (1-2) processed on the contact element (1).
4. The lightning protected connector for high bandwidth radio frequency signals according to claim 3, wherein: the lightning protection connector comprises a crimp terminal (10), the crimp terminal (10) being mounted on the fourth connection groove (2-4) via a ground screw (9).
5. The lightning protected connector for high bandwidth radio frequency signals according to claim 4, wherein: a spring washer (8) is arranged between the grounding screw (9) and the crimping terminal (10), and a first sealing piece (5) is arranged between the third connecting groove (2-3) and the diode screw (4).
6. The lightning protection connector for high bandwidth radio frequency signals according to claim 1, characterized by: and second sealing pieces (6) are arranged at the joints of the middle shell (2) and the first radio frequency interface shell and the second radio frequency interface shell.
7. The lightning protection connector for high bandwidth radio frequency signals according to claim 1, characterized by: and a gas discharge tube assembly limiting table (1-2) is processed at a position, which is positioned in the compensation cavity (2-5) and close to one side of the gas discharge tube assembly (3), on the contact element (1), and an insulating part limiting table (1-1) is respectively processed at two sides of the gas discharge tube assembly limiting table (1-2).
8. The lightning protected connector for high bandwidth radio frequency signals according to claim 1, wherein: the gas discharge tube assembly (3) comprises 2 gas discharge tubes connected in series, and the interelectrode capacitance of the gas discharge tube assembly (3) is less than or equal to 0.6pF.
9. The lightning protected connector for high bandwidth radio frequency signals according to claim 1, characterized by: the first radio frequency interface (11) and the second radio frequency interface (7) are both standard radio frequency interfaces of any one of an N type, a TNC type and an SMA type.
10. The lightning protected connector for high bandwidth radio frequency signals according to claim 1, characterized by: the middle shell (2), the first radio frequency interface shell and the second radio frequency interface shell are made of copper alloy nickel plating or ternary alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381835.7A CN115764440A (en) | 2022-11-04 | 2022-11-04 | Lightning protection connector for high-bandwidth radio-frequency signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381835.7A CN115764440A (en) | 2022-11-04 | 2022-11-04 | Lightning protection connector for high-bandwidth radio-frequency signals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115764440A true CN115764440A (en) | 2023-03-07 |
Family
ID=85356822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211381835.7A Pending CN115764440A (en) | 2022-11-04 | 2022-11-04 | Lightning protection connector for high-bandwidth radio-frequency signals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115764440A (en) |
-
2022
- 2022-11-04 CN CN202211381835.7A patent/CN115764440A/en active Pending
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