CN210380824U - Train multi-antenna integration platform - Google Patents

Abstract

A train multi-antenna integration platform comprises an integration platform connected with a broadband antenna, wherein the integration platform comprises at least one sub-component, one sub-component is connected with the broadband antenna, and the other sub-components are connected with the sub-component and a communication device; each sub-assembly comprises at least one power divider/combiner, and a plurality of power divider/combiners are connected in cascade; other multiple sub-components are used independently or in cascade. The utility model discloses can reduce train vehicle antenna and relevant equipment, like the quantity of the matching circuit etc. between antenna connector, antenna and rear end equipment, save the cost.

Description

Train multi-antenna integration platform

Technical Field

The utility model belongs to the technical field of the microwave, in particular to platform is integrated to train multiantenna.

Background

With the rapid development of high-speed railway construction at home and abroad, in order to ensure the running safety and data transmission of trains, the existing locomotive and motor train unit antennas are provided with a GSM-R data transmission antenna, a GNSS antenna, a WLAN/GPRS antenna and the like on the top of the train, and are used for meeting the requirements of train control communication, dispatching communication, positioning navigation, remote monitoring and the like of the trains. At present, the number of manufacturers of the train roof antenna equipment is large, the types of the antennas are various, the number of the antennas is large, and the installation positions are disordered. This results in the limited space of the installation position of the locomotive antenna and the mutual interference between the receiving and processing of the signal. In order to solve the problems, a train multi-antenna integration platform is required to be designed to reduce the number of train-mounted antennas as much as possible, further reasonably utilize the space of a train and avoid mutual interference among different signals of the train.

SUMMERY OF THE UTILITY MODEL

The utility model provides a with the integration of the current work in the multiple antenna of different frequency channels on the railway train together, realize the multichannel distribution's of signal integration platform to solve the problem that prior art exists.

The utility model adopts the following technical scheme:

the utility model provides a platform is integrated to train multiaerial which characterized in that: the integrated platform comprises at least one sub-component, wherein one sub-component is connected with the broadband antenna, and the other sub-components are connected with the sub-component and the communication equipment;

each sub-assembly comprises at least one power divider/combiner, and a plurality of power divider/combiners are connected in cascade;

other multiple sub-components are used independently or in cascade.

The power divider/combiner comprises a coupler, a plurality of couplers of the same sub-component are connected in a cascade mode, the coupler is a symmetrical multi-section coupling line coupler, and when the plurality of power divider/combiners are connected in the cascade mode, an output port of one power divider/combiner is connected with an input port of the other power divider/combiner.

When the sub-assembly is used independently, the broadband antenna is connected to the input port of the sub-assembly, and the communication devices are respectively connected to the output ports of the sub-assembly.

When multiple sub-components are used in tandem, the broadband antenna is connected to one sub-component, and signals are transmitted to other sub-components through the sub-component and then transmitted to the communication device through other sub-components.

In the plurality of sub-platforms, each sub-platform has the same or different frequency coverage range, and all sub-platforms can cover the frequency range of 400MHZ to 5.9 GHz.

The utility model has the advantages that: the utility model discloses can reduce train vehicle antenna and relevant equipment, like the quantity of the matching circuit etc. between antenna connector, antenna and rear end equipment, save the cost.

Drawings

Fig. 1 is a schematic diagram of a train multi-antenna integrated platform.

Fig. 2 is a schematic diagram of cross-coupled striplines.

Fig. 3 is a schematic diagram of a symmetrical multi-section coupled line directional coupler.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The utility model provides a train multiaerial integration platform, this platform can be in the same place the integration of the current work in the multiple antenna of different frequency channels on the railway train, realize the multichannel distribution of signal, accomplish the directional distribution of success rate. Meanwhile, the multi-antenna integration platform has extremely wide relative bandwidth and can be compatible with all working frequency bands of the existing train antenna; the power loss of the power transmission device is small, and the power can be effectively saved; the power distribution of each path is reasonable, and the power distribution of the output end can be realized according to any preset proportion; meanwhile, the device has the characteristics of small volume, light weight and simple structure.

Particularly, the utility model discloses an integration platform of being connected with broadband antenna integrates the platform and includes at least one subcomponent, and broadband antenna and communications facilities are connected to at least one subcomponent, and this communications facilities synthesizes wireless communications facilities for locomotive GPS receiver, GPS information receiver, row's tail device and locomotive.

Each sub-component can be used independently to realize multi-port distribution of power; under the condition of keeping the number of input ports unchanged, the number of output ports can be increased among the sub-components, namely among the couplers, in a cascading mode, and the power distribution of any number of output ports is realized.

The single sub-assembly may comprise one coupler or a plurality of couplers, and when the plurality of couplers are used, the plurality of couplers are connected together in a cascade connection mode and used for expanding the number of ports, namely, one output port of one coupler is connected with an input port of another coupler, one output port of another coupler is connected with an input port of the next coupler, and the ports are connected in sequence and expanded.

When the individual sub-assemblies are used independently, the broadband antenna is connected to the input ports of the sub-assemblies and the communication devices are connected to the output ports of the sub-assemblies, respectively.

When multiple sub-assemblies are used in tandem, as shown in fig. 1, the broadband antenna is connected to sub-assembly 1, and then transmits signals to one or more other sub-assemblies through sub-assembly 1, and then to the communication devices connected to the other sub-assemblies through the other sub-assemblies.

The frequency coverage range of each sub-component can be different or the same, and when different, all working frequency bands of the existing train-mounted antenna need to be covered at the same time, and the specific ranges are as follows: 400MHz to 5.9 GHz.

The coupler is a power divider/combiner, which is a directional coupler with ultra-wideband, and the coupler is implemented using a stripline structure. The stripline coupling line form can have smaller passband insertion loss and better shielding effect, and the stripline structure can bear larger power.

The strip line comprises two grounding medium flat plates and a medium plate between the two grounding medium flat plates, wherein a signal transmission line is etched on the medium plate and is realized by utilizing a cross-coupling structure. The two dielectric flat plates are respectively pressed on the upper side and the lower side of the dielectric plate with the signal transmission line to form a coupling line.

Above-mentioned the utility model discloses in, because input port figure is limited, output port figure is numerous, consequently need guarantee that the bandwidth of output port is wide enough. The single section coupling line coupler receives the restriction on the bandwidth, makes its occasion that is applicable to the ultra wide band in order to extend the work bandwidth of coupling line coupler, the utility model discloses couple together multisection coupling line, form symmetrical type multisection coupling line or asymmetric type multisection coupling line, as shown in fig. 3, the utility model discloses a symmetrical type multisection coupling line coupler, the coupling line of each section all is about horizontal axis symmetry promptly, and comprises odd number section coupling line, and the length of each section coupling line is quarter wavelength and odd-even mode impedance and all satisfies matching and isolation condition.

The utility model discloses in, under the condition that can satisfy at the output of each output port, guarantee as far as that the output of a output port is the same, also will realize 3 dB's power distribution, can use the method of two couplers of cross series connection to form a coupler. The specific way to cross-connect the two couplers in series is to connect the coupled port of the first coupler with the input port of the second coupler and to connect the through port of the first coupler with the isolated port of the second coupler. Schematic diagram of a cross-series coupler for achieving ultra-wideband and strong coupling simultaneously. The two cross-serially connected couplers can form couplers with any coupling degree, so that the problem of reasonable power distribution is solved. The ultra-wideband power divider/combiner realized by the staggered coupling strip line structure can adjust the coupling strength of the two strip lines by adjusting the staggered width of the two strip lines in the middle and the distance between the upper part and the lower part, and change the power distribution of each port of the ultra-wideband power divider/combiner. Cross-coupled stripline structures typically have four ports, one of which is the input, two of which are the outputs, and one of which is an isolation break, connected to a matched load device. Each coupler in the sub-assembly selects an ultra-wideband power divider/combiner.

The utility model discloses a train multi-antenna integration platform's good reliability can bear great power (10W), and stable in structure can be applicable to the abominable occasion of multiple environment simultaneously, like the air humidity, cold, hot, plateau area etc.. The train multi-antenna integration platform can realize higher port isolation, and the isolation between output ports is more than or equal to 15 dB; the platform can absorb most of the feed-in power, and the standing wave ratio of the input port is less than or equal to 1.5; amplitude unevenness: less than or equal to 3 dB.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the present invention should be covered by the protection scope of the present invention.

Claims (5)

1. The utility model provides a platform is integrated to train multiaerial which characterized in that: the integrated platform comprises at least one sub-component, wherein one sub-component is connected with the broadband antenna, and the other sub-components are connected with the sub-component and the communication equipment;

each sub-assembly comprises at least one power divider/combiner, and a plurality of power divider/combiners are connected in cascade;

other multiple sub-components are used independently or in cascade.

2. The integrated platform of claim 1, wherein:

the power divider/combiner comprises a coupler, a plurality of couplers of the same sub-component are connected in a cascade mode, the coupler is a symmetrical multi-section coupling line coupler, and when the plurality of power divider/combiners are connected in the cascade mode, an output port of one power divider/combiner is connected with an input port of the other power divider/combiner.

3. The integrated platform of claim 1, wherein:

when the sub-assembly is used independently, the broadband antenna is connected to the input port of the sub-assembly, and the communication devices are respectively connected to the output ports of the sub-assembly.

4. The integrated platform of claim 1, wherein:

when multiple sub-components are used in tandem, the broadband antenna is connected to one sub-component, and signals are transmitted to other sub-components through the sub-component and then transmitted to the communication device through other sub-components.

5. The integrated platform of claim 1, wherein:

in the plurality of sub-platforms, each sub-platform has the same or different frequency coverage range, and all sub-platforms can cover the frequency range of 400MHZ to 5.9 GHz.

Images