CN217035975U - Multi-service fusion train antenna - Google Patents
Multi-service fusion train antenna Download PDFInfo
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- CN217035975U CN217035975U CN202221031642.4U CN202221031642U CN217035975U CN 217035975 U CN217035975 U CN 217035975U CN 202221031642 U CN202221031642 U CN 202221031642U CN 217035975 U CN217035975 U CN 217035975U
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Abstract
The utility model relates to a multi-service integrated train antenna which comprises an antenna housing, an antenna pedestal arranged at the bottom of the antenna housing, a high-precision RDSS positioning module, a WLAN antenna and a dual-frequency antenna, wherein the high-precision RDSS positioning module, the WLAN antenna and the dual-frequency antenna are respectively arranged in the antenna housing; the transmitting and receiving antenna of the high-precision RDSS positioning module is arranged at the highest end, and the receiving and transmitting module is arranged on the antenna pedestal; the WLAN antenna is vertically arranged on the antenna pedestal, adopts an asymmetric special-shaped dipole structure and supports 2.4GHz and 5GHz frequency bands; the dual-frequency antenna is vertically arranged on the antenna pedestal and is a planar special-shaped dipole radiation unit; the dual-frequency antenna comprises a 450MHz frequency band and an 800/900MHz frequency band; the utility model adopts the special-shaped dipoles vertical to the antenna pedestal, the antenna radiates in all directions, the standing wave of the antenna is less than 1.5, the performance is excellent, the positioning antenna is positioned at the highest position of the antenna, the antenna is free of interference, the positioning function is ensured, and the antenna has the advantages of simple and compact integral structure, miniaturization, easy installation and debugging and the like.
Description
Technical Field
The utility model relates to the field of mobile communication vehicle-mounted antennas, in particular to a multi-service fusion train antenna.
Background
With the rapid development of related technologies of intelligent railways in China, the transmission requirements in the aspects of information control, information command, information monitoring and the like are continuously increased, and a plurality of pairs of antennas are installed in the limited space of the roof of a vehicle at present based on the requirements of existing railway communication services. It is expected that a batch of new business equipment will be put into use in the future, and the demand of the number of new vehicle-mounted antennas will be motivated.
Through expert research, the roof antennas of different vehicle types have different requirements, the roof antenna of the motor train unit with the speed of 350 kilometers needs 27 antenna oscillators, the roof antenna of the motor train unit with the speed of 250 kilometers needs 26 antenna oscillators, the roof antenna of the motor train unit with the speed of 160 kilometers needs 20 antenna oscillators, the roof antenna of the locomotive needs 20 antenna oscillators, the roof antenna of the special equipment for self-wheel operation needs 15 antenna oscillators, and the antennas cannot be installed in the limited space of the roofs of the existing motor train unit and the locomotive at all.
Although there are multi-function antenna devices on the market, such as the car antenna disclosed in prior art 201910112695.5, the following problems occur:
1. for a high-speed scene and a vibration scene, the stability of the spiral antenna is poor, and the influence of the swing of the antenna on the communication quality is large.
2. The mobile communication third antenna is obliquely arranged, the antenna radiation cannot form omnidirectional radiation, and partial space has no signal, so that partial azimuth communication can be interrupted;
3. the antenna has narrow frequency band and cannot meet the requirement of broadband; meanwhile, the whole standing wave of the antenna is high, and the energy efficiency is low.
4. The relative position of the positioning antenna is low, the surrounding metal environment has great interference to the use of the positioning antenna, and the positioning reliability is poor;
5. the whole antenna is higher, the wind resistance of the antenna is larger, and when the train runs at high speed and meets other trains or caves, the Bernoulli effect is easier to damage the antenna.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a multi-service fusion train antenna, solves the problem that the antenna cannot be continuously additionally arranged on the top of a motor train unit and a locomotive, fuses multiple types of multi-band antennas, realizes the integration of multiple types of service antennas into one antenna, reduces the mounting space of the top of the locomotive to the maximum extent, ensures the normal use of new service equipment such as a vehicle-mounted comprehensive wireless transmission platform and the like, and ensures that each vehicle-mounted service equipment normally uses a railway 5G special communication network system.
In order to achieve the purpose, the utility model adopts the technical scheme that: a multi-service fusion train antenna comprises an antenna housing, an antenna pedestal arranged at the bottom of the antenna housing, a high-precision RDSS positioning module, a WLAN antenna and a dual-frequency antenna, wherein the high-precision RDSS positioning module, the WLAN antenna and the dual-frequency antenna are respectively arranged in the antenna housing;
the transmitting and receiving antenna of the high-precision RDSS positioning module is arranged at the highest end, and the transceiving module is arranged on the antenna pedestal;
the WLAN antenna is vertically arranged on the antenna pedestal, adopts an asymmetric special-shaped dipole structure and supports 2.4GHz and 5GHz frequency bands;
the dual-frequency antenna is vertically arranged on the antenna pedestal and is a planar special-shaped dipole radiation unit; the dual-frequency antenna comprises a 450MHz frequency band and an 800/900MHz frequency band.
Preferably, the planar special-shaped dipole radiation unit is composed of two parts, the first part is an elliptical radiation unit, space matching is realized by back loading, the second part is a fan-shaped radiation unit, and the back extends to form an asymmetric structure.
Preferably, two parts of the planar special-shaped dipole radiation unit form the radiation unit by adopting a two-dimensional continuous curve.
Preferably, the overall height of the dual-frequency antenna is less than 110mm, and the standing wave is less than 1.5.
Preferably, the distance between the WLAN antenna and the dual-frequency antenna meets the requirements that the frequency band below 1GHz is isolated by more than 15dB, and the frequency band above 1GHz is isolated by more than 20 dB.
Preferably, the antenna pedestal is fixedly connected with the antenna housing through a plurality of bolts.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the multi-service integrated train antenna provided by the utility model completely adopts the special-shaped dipole vertical to the ground, the antenna radiates in all directions, the communication is reliable, and the performance is excellent;
2. the positioning antenna is positioned at the highest position of the antenna, and the received satellite signal is not shielded by metal, so that the signal is stable and the positioning reliability is high;
3. the dual-frequency antenna is adopted, the frequency range is wide, the dual-frequency coverage of the frequency ranges of 400MHz-470MHz and 800/900MHz is met, the standing wave is less than 1.5, and the height of the antenna is lower than 110 mm;
4. the optimal spacing and the specific radiation scheme are adopted among the radiation units, the incoherence among the radiation units is enhanced, and the spacing degree among the antennas is high;
5. the antenna of the utility model integrally adopts a miniaturized design, and has the advantages of simple and compact integral structure, stability, easy installation and debugging and the like.
Drawings
The technical scheme of the utility model is further explained by combining the drawings as follows:
FIG. 1 is a schematic diagram of the general structure of a multi-service integrated train antenna according to the present invention;
FIG. 2 is a diagram of a multi-service integrated train antenna according to the present invention
Fig. 3 is a diagram of a multi-service integrated train antenna according to the present invention, in which: 1. an antenna cover; 2. an antenna mount; 3. a high-precision RDSS positioning module; 4. a WLAN antenna; 5. a dual-band antenna; 51. an elliptical radiation unit; 52. and a fan-shaped radiation unit.
Detailed Description
The utility model is described in further detail below with reference to the figures and the embodiments.
And (3) multi-service fusion: the method refers to the fusion of mobile communication service, local area network coverage service and satellite transceiving positioning service.
A train antenna: the antenna is specially used for train locomotives such as high-speed trains, motor cars and express trains.
Fig. 1-3 show a multi-service integrated train antenna according to the present invention, which comprises an antenna housing 1, an antenna pedestal 2 disposed at the bottom of the antenna housing 1, a high-precision RDSS positioning module 3, a WLAN antenna 4, and a dual-frequency antenna 5 disposed in the antenna housing 1, respectively;
the transmitting and receiving antenna of the high-precision RDSS positioning module 3 is arranged at the highest end, is upward unobstructed and free of interference, and ensures the positioning function, and the transceiver module is arranged on the antenna pedestal 2 and is installed through screws, so that the positioning function is stable and reliable;
the WLAN antenna 4 is vertically arranged on the antenna pedestal 2, adopts an asymmetric special-shaped dipole structure, meets the fifth-generation WLAN communication standard, and simultaneously supports 2.4GHz and 5GHz frequency bands;
the dual-frequency antenna 5 is vertically arranged on the antenna pedestal 2, is a planar special-shaped dipole radiation unit and has a wider frequency range; the dual-frequency antenna comprises a 450MHz frequency band and an 800/900MHz frequency band, and meets dual-frequency coverage of 400MHz-470MHz and 800/900MHz frequency bands.
Further, the planar special-shaped dipole radiation unit is composed of two parts, wherein the first part is an elliptical radiation unit 51, the back surface is loaded to realize space matching, the second part is a fan-shaped radiation unit 52, and the back surface extends to form an asymmetric structure; the elliptical radiation unit 51 can be loaded in various shapes such as Y-shape, square, rectangle, circle, etc. to realize space matching, and the fan-shaped radiation unit 52 can also be loaded in various shapes such as L-shape, square, rectangle, semi-ellipse, etc.
Furthermore, two parts of the planar special-shaped dipole radiation unit form the radiation unit by adopting a two-dimensional continuous curve, so that broadband is realized, and the two parts together complete dual-frequency radiation of 400MHz-470MHz and 800/900MHz frequency bands.
Furthermore, the whole height of the dual-frequency antenna 5 is less than 110mm, the standing wave is less than 1.5, the size is small, and the performance is excellent.
Furthermore, the distance between the WLAN antenna 4 and the dual-frequency antenna 5 is optimally designed, so that the isolation of frequency bands below 1GHz is more than 15dB, the isolation of frequency bands above 1GHz is more than 20dB, incoherence among units is enhanced, and the isolation is high.
Further, the antenna pedestal 2 is fixedly connected with the antenna housing 1 through a plurality of bolts, so that the installation and maintenance are convenient.
The above are only specific application examples of the present invention, and do not limit the scope of the present invention in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (6)
1. A multi-service fusion train antenna is characterized in that: the antenna comprises an antenna housing, an antenna seat arranged at the bottom of the antenna housing, a high-precision RDSS positioning module, a WLAN antenna and a dual-frequency antenna, wherein the high-precision RDSS positioning module, the WLAN antenna and the dual-frequency antenna are respectively arranged in the antenna housing;
the transmitting and receiving antenna of the high-precision RDSS positioning module is arranged at the highest end, and the receiving and transmitting module is arranged on the antenna pedestal;
the WLAN antenna is vertically arranged on the antenna pedestal, adopts an asymmetric special-shaped dipole structure and supports 2.4GHz and 5GHz frequency bands;
the dual-frequency antenna is vertically arranged on the antenna pedestal and is a planar special-shaped dipole radiation unit; the dual-frequency antenna comprises a 450MHz frequency band and an 800/900MHz frequency band.
2. The multi-service converged train antenna according to claim 1, wherein: the planar special-shaped dipole radiation unit is composed of two parts, wherein the first part is an elliptical radiation unit, the back surface is loaded to realize space matching, the second part is a fan-shaped radiation unit, and the back surface extends to form an asymmetric structure.
3. The multi-service converged train antenna according to claim 2, wherein: and two parts of the planar special-shaped dipole radiation unit form the radiation unit by adopting a two-dimensional continuous curve.
4. The multi-service convergence train antenna according to claim 3, wherein: the whole height of the dual-frequency antenna is less than 110mm, and the standing wave is less than 1.5.
5. The multi-service convergence train antenna according to any one of claims 1 to 4, wherein: the distance between the WLAN antenna and the dual-frequency antenna meets the requirements that the frequency band isolation below 1GHz is more than 15dB, and the frequency band isolation above 1GHz is more than 20 dB.
6. The multi-service convergence train antenna according to claim 5, wherein: the antenna pedestal is fixedly connected with the antenna housing through a plurality of bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221031642.4U CN217035975U (en) | 2022-04-29 | 2022-04-29 | Multi-service fusion train antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221031642.4U CN217035975U (en) | 2022-04-29 | 2022-04-29 | Multi-service fusion train antenna |
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| Publication Number | Publication Date |
|---|---|
| CN217035975U true CN217035975U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221031642.4U Active CN217035975U (en) | 2022-04-29 | 2022-04-29 | Multi-service fusion train antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345160A (en) * | 2023-05-29 | 2023-06-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Multi-system fusion vehicle-mounted antenna and vehicle-mounted communication system |
| CN116345149A (en) * | 2023-05-29 | 2023-06-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Ultra-wideband high-isolation 5G vehicle-mounted antenna and communication system |
| RU224292U1 (en) * | 2023-12-18 | 2024-03-20 | Общество с ограниченной ответственностью "Лаборатория радиосвязи" | MULTI-BAND LOCOMOTIVE ANTENNA 400-5000 MHz |
-
2022
- 2022-04-29 CN CN202221031642.4U patent/CN217035975U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116345160A (en) * | 2023-05-29 | 2023-06-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Multi-system fusion vehicle-mounted antenna and vehicle-mounted communication system |
| CN116345149A (en) * | 2023-05-29 | 2023-06-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Ultra-wideband high-isolation 5G vehicle-mounted antenna and communication system |
| CN116345149B (en) * | 2023-05-29 | 2023-09-26 | 中国铁道科学研究院集团有限公司通信信号研究所 | Ultra-wideband high-isolation 5G vehicle-mounted antenna and communication system |
| RU224292U1 (en) * | 2023-12-18 | 2024-03-20 | Общество с ограниченной ответственностью "Лаборатория радиосвязи" | MULTI-BAND LOCOMOTIVE ANTENNA 400-5000 MHz |
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Effective date of registration: 20230804 Address after: 201400 Room 320, 3rd Floor, Building 1, No. 3111 Huancheng West Road, Fengxian District, Shanghai Patentee after: ARK Technology Corp. Address before: 215000 No.65, intercity Road, Hushuguan Town, high tech Zone, Suzhou City, Jiangsu Province Patentee before: SUZHOU RF TOP ELECTRONIC COMMUNICATIONS Co.,Ltd. |