CN209963260U - Anti-interference equipment of antenna and base station - Google Patents
Anti-interference equipment of antenna and base station Download PDFInfo
- Publication number
- CN209963260U CN209963260U CN201821837098.6U CN201821837098U CN209963260U CN 209963260 U CN209963260 U CN 209963260U CN 201821837098 U CN201821837098 U CN 201821837098U CN 209963260 U CN209963260 U CN 209963260U
- Authority
- CN
- China
- Prior art keywords
- antenna
- interference
- hoop
- jamming
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The application discloses anti jamming unit of antenna includes: the anti-interference structure is used for inhibiting interference signals; and the fixed structure is connected with the anti-interference structure and is used for fixing the anti-interference structure in the non-radiation direction of the directional antenna. Simultaneously, this application still discloses a basic station, includes: directional antenna and this application disclose antenna anti jamming equipment.
Description
Technical Field
The application relates to the field of wireless communication, in particular to anti-interference antenna equipment and a base station.
Background
A directional antenna is an antenna that emits and receives electromagnetic waves in one or more specific directions with a high intensity, and emits and receives electromagnetic waves in other directions with a null or minimum intensity. The directional transmitting antenna is adopted to increase the effective utilization rate of the radiation power and increase the confidentiality; the main purpose of using directional receiving antenna is to enhance signal strength and increase anti-interference ability.
The directional antenna is an important component of the base station, and the use of a large amount of current shielding devices generates large interference on signals received by the directional antenna, thereby causing large interference on a mobile network. However, a solution that has a low cost and can quickly reduce the interference to the mobile network due to the use of the shielding device is still lacking.
Disclosure of Invention
The application provides an anti-interference device of an antenna and a base station.
The technical scheme of the application is realized as follows:
an antenna jamming prevention device comprising:
the anti-interference structure is used for inhibiting interference signals;
the fixed structure is connected with the anti-interference structure and used for fixing the anti-interference structure in the non-radiation direction of the directional antenna;
the anti-interference structure is a metal grid plate, and the non-grid part of the metal grid plate is a smooth metal surface.
Further, the anti-jamming structure includes: two metal grid plates.
Furthermore, the two metal grid plates are symmetrically distributed by the antenna holding pole.
Furthermore, the fixing structure is a hoop structure, a first connecting end of the hoop is connected with the anti-interference structure, and a second connecting end of the hoop is fixed on the antenna holding pole; wherein the first connecting end and the second connecting end are opposite.
Furthermore, the number of the hoop structures is two, and the two hoop structures are symmetrically distributed on the antenna holding pole.
Further, the staple bolt structure includes:
the arc-shaped hoop sheet and a connecting rod connected with the arc-shaped hoop sheet;
the arc-shaped hoop sheet surrounds the antenna holding pole;
the connecting rod is connected with the anti-interference structure.
Furthermore, the plane of the anti-interference structure is parallel to the plane of the antenna back plate of the antenna.
Further, the length of the anti-interference structure is greater than the length of the antenna radiator, and the width of the anti-interference structure is greater than the width of the antenna radiator.
The present application further provides a base station, including:
a directional antenna;
the above described antenna anti-jamming device.
The application provides an anti jamming equipment of antenna and basic station includes: the anti-interference structure is used for inhibiting interference signals; and the fixed structure is connected with the anti-interference structure and is used for fixing the anti-interference structure in the non-radiation direction of the directional antenna. According to the method and the device, the interference structure is fixed in the non-radiation direction of the directional antenna through the fixing structure, so that the influence on receiving or sending signals of the directional antenna in the radiation direction due to installation of anti-interference equipment is reduced; according to the method and the device, interference signals are suppressed through the anti-interference structure, the probability that the directional antenna receives signals sent by interference sources such as a shielding device is reduced, and then the interference of the interference sources such as the shielding device on the base station is reduced.
Drawings
Fig. 1 is a schematic diagram of an antenna anti-interference device according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another antenna interference rejection apparatus according to an embodiment of the present application;
FIG. 3 is a schematic state diagram of the apparatus of the present application mounted on an antenna mast;
FIG. 4 is a schematic view of the structure of part A or part B of FIG. 2;
fig. 5 is a schematic diagram of a base station according to the present application.
Detailed Description
For confidentiality, places such as parties, government offices, colleges and universities are often provided with shielding devices to shield communication signals of operators. Meanwhile, due to the fact that small loan businesses are active, many mortgages are also provided with non-compliant shielding devices, the interference to the network is large, and the mobility is large.
The shielding device product is a non-national standard product, and the Ministry of industry and trust has no standard for reference, so that the shielding devices in the industry have various types and have no unified standard.
The shielding device used in the industry is used for multiple mobile communication downlink signals, but often manufacturers do not know the network characteristics of public network operators, and the research and development attention points of products often only emphasize and transmit downlink co-frequency interference signals, but ignore the following two points:
1. the shielding device also has a large out-of-band stray radiation when transmitting the downlink co-frequency interference signal, for example, the shielding device 800MHz transmitting port does not fully consider the out-of-band radiation of 890-909MHz when transmitting the 800MHz co-frequency interference signal to interfere the downlink of the telecommunication network, which causes the uplink of the mobile 900MHz network to be also strongly interfered.
2. When the product is researched and developed, the TD-LTE network is ignored as a time division multiple access system, and the uplink and the downlink are in the same frequency and different time slots, so that the downlink signal of the base station is interfered, and the uplink signal of the base station is also directly interfered.
Based on this, this application has designed antenna anti jamming equipment and base station that can effectively reduce interference sources such as shielding ware, to the uplink signal interference of base station.
In various embodiments of the present application, interference signals are suppressed by the anti-interference structure, and the anti-interference structure is fixed in the non-radiation direction of the directional antenna by the fixing structure, so that interference of interference sources such as a shielding device to the directional antenna is reduced. To make the objects, technical solutions and advantages of the embodiments of the present application more apparent, the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of an antenna interference rejection apparatus according to an embodiment of the present application, as shown in the drawing, the antenna interference rejection apparatus includes:
an anti-jamming structure 101 for suppressing jamming signals;
and the fixed structure 102 is connected with the anti-interference structure 101 and is used for fixing the anti-interference structure 101 in the non-radiation direction of the directional antenna.
The diffraction principle of the wave refers to the phenomenon that the propagation direction of the wave changes when the wave encounters an obstacle to bypass the obstacle or gap in the propagation process. The smaller the width of the obstacle or slit, and the larger the wavelength, the more pronounced the diffraction phenomenon. The intensity of the electromagnetic wave in the propagation direction can be greatly weakened by utilizing the principle of superposition of secondary waves brought by the diffraction capability of the wave. By utilizing the diffraction principle of electromagnetic waves, the metal grid plate has the function of inhibiting interference signals, so that the equipment has the anti-interference effect.
The fixing structure 102 fixes the anti-interference structure in the non-radiation direction of the directional antenna, and may be formed by components with fixing functions, such as: the hoop, the metal buckle, the bolt and nut structure and the like can also adopt a direct binding mode.
The radiation direction of the directional antenna is a specific direction in which the directional antenna radiates and receives signals particularly strongly; the non-radiating direction of a directional antenna refers to other directions than the radiating direction. The interference structure is fixed in the non-radiation direction of the directional antenna through the fixing structure, and the influence on the signal receiving or transmitting of the directional antenna in the radiation direction is reduced.
For directional antennas, the lobe with the largest radiation direction is called the main lobe, the other lobes are collectively called side lobes, and the lobe directly behind the main lobe is called the back lobe. The mobile communication wireless coverage mainly depends on the main lobe, and the side lobe and the back lobe belong to interference to other cells in the network. The logarithm of the ratio of the power density in the main lobe maximum radiation direction to the power density in the back lobe maximum radiation direction is called the front-to-back ratio. The larger the front-to-back ratio, the more concentrated the electromagnetic energy radiated by the antenna is in the main radiation direction. The antenna with low front-to-back ratio is selected, and the rear lobe of the antenna can generate cross-zone coverage, so that the switching relation is disordered, and call drop is generated. This application is through the radiation ability of restraining antenna back lobe signal, and then improves antenna front-to-back ratio, promotes antenna directional radiation ability.
Optionally, a plane where the anti-jamming structure 101 is located is parallel to a plane of an antenna backplane of the antenna, and the anti-jamming structure 101 is located on one side of the antenna backplane. The plane of the anti-interference structure 101 is parallel to the plane of the antenna back plate of the antenna, and the plane of the antenna back plate is generally perpendicular to the maximum radiation direction of the main lobe of the directional antenna, that is, the plane of the anti-interference structure 101 is perpendicular to the maximum radiation direction of the main lobe of the directional antenna; the normal signal generally comes from the other side of the antenna opposite to the antenna backplane, and the anti-jamming structure 101 is located at one side of the antenna backplane, and the normal signal is transmitted and received without passing through the anti-jamming structure 101. At this moment, because the plane on which the anti-interference structure 101 is located is perpendicular to the maximum radiation direction of the main lobe of the directional antenna, and normal signals can directly reach the antenna without passing through the anti-interference structure 101, the influence of the anti-interference signals on the normal signals is small, and the anti-interference structure 101 can suppress interference signals in other directions at the same time, so that the antenna has a high front-to-back ratio, and the directional radiation capability of the antenna is improved.
The interference signal mainly refers to the interference signal emitted by the shielding device, and may also refer to the interference signal emitted by other interference sources.
In practice, when the electromagnetic wave passes through an obstacle with an aperture smaller than 1/10 of the wavelength, a significant diffraction phenomenon occurs, and the intensity of a signal passing through the obstacle can be effectively reduced.
The anti-interference structure 101 may be a metal grid plate, a grid aperture of the metal grid plate is generally selected to be 0.5cm, and the aperture size may also be adjusted according to different frequency bands to which interference signals to be shielded belong.
The anti-interference structure in the equipment of the application adopts the metal grid plate to compare with the metal plate without the grid structure, and has the following advantages: the metal grid structure is more cost-effective; the use of metal plates without grid structures has the disadvantages of large windward area, too heavy weight and unfavorable construction.
The anti-interference structure is a metal grid plate, the non-grid part of the metal grid plate is a smooth metal surface, and the smooth metal surface has the function of reflecting interference signals, so that the anti-interference effect of anti-interference equipment can be further enhanced.
The tamper resistant structure 101 may be designed differently depending on the installation site.
Optionally, the tamper resistant structure 101 is two metal grid plates. In the actual work progress, it is more convenient mounting means to install anti-jamming equipment on the antenna pole, and the antenna pole is generally erect higher, and near installs a great deal of equipment, for example: the antenna is generally fixed on the holding pole through an upper hoop and a lower hoop; the RRU equipment, a large number of feeder lines, optical cables and the like also need to be fixed on the holding pole. If this application equipment directly adopts a metal grid plate to install, the construction degree of difficulty can be great, and adopts two metal grid plates, accomplishes the construction from the both sides concatenation of antenna, has obviously reduced the construction degree of difficulty.
Optionally, the two metal grid plates are symmetrically distributed by the antenna holding pole, so that the design is favorable for keeping the balance of anti-interference equipment at high altitude and simplifying the production and construction processes.
Optionally, the fixing structure 102 is a hoop structure, a first connecting end of the hoop is connected to the anti-jamming structure 101, and a second connecting end of the hoop is fixed to the antenna pole; wherein the first connecting end and the second connecting end are opposite. In the actual work progress, it is more convenient mounting means to install anti-jamming equipment on the antenna pole, and the antenna pole is generally erect higher, and near installs a great deal of equipment, for example: the antenna is generally fixed on the holding pole through an upper hoop and a lower hoop; the RRU equipment, a large number of feeder lines, optical cables and the like also need to be fixed on the holding pole. In order to reduce the construction difficulty, the equipment adopts two metal grid plates, and construction is completed by splicing the two sides of the antenna. In order to match the two metal grid plates, the fixing structure 102 is designed to be two hoop structures, so that the metal grid plates can be effectively fixed on the antenna holding pole.
Optionally, the number of the hoop structures is two, and the two hoop structures are symmetrically distributed by the antenna holding pole, so that the design is favorable for keeping balance of anti-interference equipment at high altitude, and the design is also favorable for simplifying the production and construction processes.
Optionally, the hoop structure comprises: the arc-shaped hoop sheet and a connecting rod connected with the arc-shaped hoop sheet. The arc-shaped hoop sheet is used for fixing the anti-interference equipment on the antenna pole; the effect of connecting rod is fixed in the suitable distance department apart from antenna armful pole with anti-interference equipment to be favorable to anti-interference equipment to restrain the interference signal in the predetermined wavelength, and taken into account the convenience of actual installation and the needs of shielding rear antenna standing wave.
Optionally, the arc-shaped hoop sheet surrounds the antenna holding pole, and the connecting rod is connected with the anti-interference structure 101. The arc-shaped hoop sheet is designed to be of a structure capable of surrounding the antenna holding pole, the inner surface of the arc-shaped hoop sheet is attached to the outer surface of the antenna holding pole, and anti-interference equipment can be firmly fixed on the antenna holding pole. Further, can be with circular-arc staple bolt piece design for adjustable staple bolt structure, strengthen the fastness of installation, and be convenient for large-scale production and installation.
Optionally, the length of the anti-jamming structure 101 is greater than the length of the antenna radiator, and the width of the anti-jamming structure 101 is greater than the width of the antenna radiator. The area of anti-jamming structure 101 is greater than the area of antenna radiator, so, anti-jamming structure 101 can cover at least one side the antenna radiator. Anti-interference structure 101 and antenna radiator all embrace pole symmetric distribution with the antenna, and on length and width, anti-interference structure 101 all will stretch a little more to the outside than the radiator of antenna, and the interference signal is received through the lower side lobe part of antenna back lobe to the suppression that can be more, has further strengthened anti-jamming equipment's anti-jamming effect.
Fig. 2 is a schematic diagram of an antenna interference rejection apparatus according to an embodiment of the present application.
The anti-interference equipment is equipment which adopts a series of signal attenuation measures to reduce the noise value of shielding interference signals reaching a mobile communication network, namely entering an uplink receiver.
The device of the present application is comprised of A, B two parts as shown in fig. 1, where part a and part B are completely symmetrical.
In this embodiment, the anti-interference structure 101 is composed of metal grid plates respectively located at the part a and the part B; the securing structure 102 is comprised of anchor ears located at sections a and B, respectively.
Fig. 3 is a schematic state diagram of the device of the present application mounted on an antenna mast. The device is arranged on the antenna holding pole through the hoop assemblies respectively positioned at A, B two parts.
Fig. 4 is a schematic view of a portion a or a portion B in fig. 2.
As shown in fig. 2, 3 or 4:
the hoop is used for being fixed on a holding pole at the back of the antenna and mainly plays a role in fixing;
the anti-interference structure adopts a 304 stainless steel grid structure or an aluminum alloy galvanized grid structure.
The antenna hoop comprises a hoop arc-shaped hoop sheet and a connecting rod connected with the hoop arc-shaped hoop sheet, wherein the arc-shaped hoop sheet is combined to fix an anti-interference device on the antenna hoop sheet; the length of the connecting rod limits the distance between the anti-interference device and the antenna hoop, and is generally limited to about 15 cm.
The hoop and the interference signal resisting main body part are fixed in a welding mode.
The grid aperture of the metal grid plate is 0.5cm in consideration of the requirement of full frequency band. The length of the two metal grid plates is generally 20cm longer than that of the antenna radiator, and the width of the two metal grid plates is generally 30cm longer than that of the antenna radiator.
Direction 1 in fig. 4 represents the base station uplink signal direction and direction 2 represents the interfering signal direction.
This anti-interference equipment is metal construction, and the lug fixation is embraced the pole, need not ground connection once more.
The anti-interference device in this embodiment is mainly based on the following considerations:
1. attenuation of antenna main lobe interference signal: the device mainly uses the diffraction principle of waves, i.e. when the aperture is smaller than 1/10 of the wavelength, the intensity of the signal can be reduced. The main body of the device is a 304 stainless steel grid structure, or an aluminum alloy galvanized grid structure is adopted, so that the strength of interference signals reaching the antenna can be effectively reduced.
2. Attenuating antenna back lobe interference signals: for a base station within the coverage of the shield, but facing away from the shield, it mainly interferes with the reception of the shield signal from the antenna back lobe. The device reduces the receiving of interference signals by the rear lobe of the antenna by covering the back plate of the antenna.
3. Attenuating antenna lower side lobe interference signals: the device design height is greater than the antenna height. The reason is that: the height of the base station antenna is generally higher than the installation position of the shielding device, and in order to suppress more shielding signals received by the lower side lobe part of the antenna back lobe, the height of anti-interference equipment is increased.
4. The front-to-back ratio of the antenna is improved: the equipment can also reduce the signal emission of the antenna back lobe in the base station, further reduce the internal interference of the whole network and improve the network quality.
The device is suitable for resisting various uplink interference scenes such as telecommunication 800M out-of-band spurs, telecommunication 1800M out-of-band spurs, private repeater stations, party and government force shields and the like.
Fig. 5 is a schematic diagram of a base station provided in the present application, where the base station includes:
a directional antenna 501;
antenna jamming prevention device 502 as described above.
The above-mentioned antenna interference rejection device 502 is located in the non-radiation direction of the directional antenna 501, and is used for suppressing the interference signal of the directional antenna 501.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.
Claims (9)
1. An antenna jamming prevention device, comprising:
the anti-interference structure is used for inhibiting interference signals;
the fixed structure is connected with the anti-interference structure and used for fixing the anti-interference structure in the non-radiation direction of the directional antenna;
the anti-interference structure is a metal grid plate, and the non-grid part of the metal grid plate is a smooth metal surface.
2. The apparatus of claim 1,
the anti-jamming structure includes: two metal grid plates.
3. The apparatus of claim 2,
the two metal grid plates are symmetrically distributed by the antenna holding pole.
4. The apparatus of claim 1,
the fixing structure is a hoop structure, a first connecting end of the hoop is connected with the anti-interference structure, and a second connecting end of the hoop is fixed on the antenna holding pole; wherein the first connecting end and the second connecting end are opposite.
5. The apparatus of claim 4,
the hoop structures are two and are symmetrically distributed on the antenna holding pole.
6. The apparatus according to claim 4 or 5,
staple bolt structure includes:
the arc-shaped hoop sheet and a connecting rod connected with the arc-shaped hoop sheet;
the arc-shaped hoop sheet surrounds the antenna holding pole;
the connecting rod is connected with the anti-interference structure.
7. The device of any of claims 1 to 5, wherein the plane of the anti-jamming structure is parallel to the plane of the antenna backplane of the antenna.
8. The device of any of claims 1-5, wherein a length of the immunity structure is greater than a length of a radiator of the antenna, and a width of the immunity structure is greater than a width of the radiator of the antenna.
9. A base station, characterized in that the base station comprises:
a directional antenna;
the apparatus of any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821837098.6U CN209963260U (en) | 2018-11-08 | 2018-11-08 | Anti-interference equipment of antenna and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821837098.6U CN209963260U (en) | 2018-11-08 | 2018-11-08 | Anti-interference equipment of antenna and base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209963260U true CN209963260U (en) | 2020-01-17 |
Family
ID=69233743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821837098.6U Active CN209963260U (en) | 2018-11-08 | 2018-11-08 | Anti-interference equipment of antenna and base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209963260U (en) |
-
2018
- 2018-11-08 CN CN201821837098.6U patent/CN209963260U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100441146B1 (en) | Notch type antenna in a mobile communication service repeater | |
| US4673943A (en) | Integrated defense communications system antijamming antenna system | |
| US20030189518A1 (en) | Interferometric antenna array for wireless devices | |
| US20230261612A1 (en) | Magnetic absorbers for passive intermodulation mitigation | |
| CN117178526A (en) | Passive intermodulation interference optimized antenna configuration | |
| CN209963260U (en) | Anti-interference equipment of antenna and base station | |
| CN210123797U (en) | Antenna array | |
| JP3456512B2 (en) | Multipath prevention fence and multipath prevention equipment | |
| US11196481B2 (en) | EMP-resistant satellite communications system and method | |
| CN207009675U (en) | A kind of satellite C frequency range electromagnetic pulse-resisting potato masher antennas | |
| JP2010004338A (en) | Shield and repeater station | |
| KR102045483B1 (en) | Terminal Antenna for Millimeter Wave | |
| KR200284309Y1 (en) | Notch type antenna in a mobile communication service repeater | |
| CN112909540A (en) | Antenna device and equipment | |
| US20220247484A1 (en) | Emp-resistant satellite communications system and method | |
| CN109004945B (en) | Multi-point distributed graph transmission and reception system for venue echo interference | |
| CN210074142U (en) | Directional radio frequency transmitting device for data transmission equipment | |
| WO2022247753A1 (en) | Antenna assembly, antenna assembly array and base station | |
| CN215451756U (en) | Antenna and MIMO antenna | |
| CN215299515U (en) | 5G-based multi-channel vertical large-opening-angle spotlight antenna | |
| NZ264804A (en) | Mobile radio system repeater only passes signals from mobile to base stations | |
| CN209963221U (en) | Outdoor omnidirectional antenna | |
| CN212366217U (en) | Remote wireless transmission antenna device and system of distribution automation terminal | |
| KR102462196B1 (en) | Spatial diversity antenna device for mobile communication in which transmission and reception are separated | |
| CN216120771U (en) | Dual-polarization wide-bandwidth high-gain quasi-yagi antenna for tunnel communication scene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |