Station antenna feeder unit of train dispatching radio frequency system

Abstract

The utility model relates to the technical field of communication radio frequency, and provides a station antenna feeder unit of a train dispatching radio frequency system, which comprises a digital relay station assembly, a combining and shunting assembly, a signal tandem assembly, a duplex shunting assembly, an analog relay station, an analog vehicle platform, a station digital near-end machine and a station outdoor antenna. The dual-work shunt assembly is in signal connection with the analog relay station and the analog vehicle station, and is used for carrying out receiving and transmitting separation and switching on digital signals; the digital relay station assembly is in signal connection with the combining and branching assembly and is used for carrying out relay amplification on the digital signal; the combining and branching assembly is in signal connection with the signal tandem assembly and the digital relay station assembly and is used for combining and distributing digital signals; the signal tandem assembly is in signal connection with the duplex shunt assembly and is used for coupling base station signals to a system; the analog relay station is in signal connection with the duplex shunt assembly and is used for performing relay amplification and two-way transmission on analog signals; the simulation train platform is in signal connection with the dual-work shunt assembly and is used for being interconnected with a train-mounted system; the station digital near-end machine is in signal connection with the signal tandem assembly and the dual-work shunt assembly and is used for providing communication signals; the station outdoor antenna is in signal connection with the signal tandem assembly and is used for covering base station signals.

Description

Technical Field

[0001] The utility model relates to the technical field of communication radio frequency, in particular to a station antenna feeder unit of a train dispatching radio frequency system. Background Art

[0002] A station radio is a train wireless dispatching communication device used by railway traffic control, locomotive crews and other train operation-related personnel at stations. Traditional station radios mainly use locomotive integrated wireless communication devices to communicate with ground devices, and can provide two wireless communication methods: 450 MHz analog system and GSM-R system. However, the traditional train dispatching radio frequency system has problems such as signal isolation between transmission and reception, low frequency band utilization rate, and slow response speed.

[0003] Chinese Patent No. CN220023076U discloses a digital dispatching station radio device, which solves the problem of poor flexibility of a single system by increasing the dispatching communication system. However, the signals of this device are relatively isolated during transmission and reception, and it cannot transmit and receive signals simultaneously, with a slow response speed. Summary of the Utility Model

[0004] In view of this, the utility model provides a station antenna feeder unit of a train dispatching radio frequency system, which adds a duplexer and splitter component to separate and quickly switch digital signals for simultaneous transmission and reception, so as to solve the problems of single transmission and reception of signals, relatively isolated transmitted and received signals, and slow response speed in the existing train dispatching radio frequency system.

[0005] The technical solution of the utility model is realized as follows: A station antenna feeder unit of a train dispatching radio frequency system includes a digital repeater component, a combiner and splitter component, a signal convergence component, a duplexer and splitter component, an analog repeater, an analog vehicle radio, a station digital proximal unit, and a station outdoor antenna;

[0006] The duplexer and splitter component is signal-connected to the analog repeater and the analog vehicle radio, and is used for separating and switching digital signals for transmission and reception;

[0007] The digital repeater component is signal-connected to the combiner and splitter component, and is used for relaying and amplifying digital signals;

[0008] The combiner and splitter component is signal-connected to the signal convergence component and the digital repeater component, and is used for combining and distributing digital signals;

[0009] The signal convergence component is signal-connected to the duplexer and splitter component, and is used for coupling base station signals to the station antenna feeder unit;

[0010] The analog repeater is signal-connected to the duplexer and splitter component, and is used for relaying, amplifying and two-way transmitting analog signals;

[0011] The simulation vehicle platform is signal - connected to the duplex splitter component and is used for interconnection with the train on - vehicle system;

[0012] The station digital proximal unit is signal - connected to the signal convergence component and the duplex splitter component and is used for providing communication signals;

[0013] The station outdoor antenna is signal - connected to the signal convergence component and is used for providing coverage for the base station signal.

[0014] Preferably, the duplex splitter component includes a two - port receiver one - to - two splitter, a first coupler, a second coupler, and a first duplexer;

[0015] The two - port receiver one - to - two splitter is signal - connected to the second coupler and is used for distributing communication signals;

[0016] The first coupler is signal - connected to the first duplexer and is used for coupling the downlink digital signal sent by the station digital proximal unit and outputting it to the first duplexer;

[0017] The second coupler is signal - connected to the first duplexer and is used for coupling the uplink digital signal sent by the station digital proximal unit and outputting it to the first duplexer;

[0018] The first duplexer is signal - connected to the first coupler and the second coupler and is used for separating and switching the uplink digital signal and the downlink digital signal.

[0019] Preferably, the signal convergence component includes a third coupler, a fourth coupler, a second duplexer, and a bridge;

[0020] The third coupler is signal - connected to the second duplexer and is used for coupling the downlink analog signal sent by the station digital proximal unit;

[0021] The fourth coupler is signal - connected to the second duplexer and is used for coupling the uplink analog signal sent by the station digital proximal unit;

[0022] The second duplexer is signal - connected to the bridge and is used for separating and switching the uplink analog signal and the downlink analog signal;

[0023] The bridge is signal - connected to the first duplexer and the station outdoor antenna and is used for distributing and combining the received signals.

[0024] Preferably, the combining and splitting component includes a three - in - one combiner and a one - to - three splitter;

[0025] The three - in - one combiner is signal - connected to the third coupler and is used for combining different signals of the digital repeater component;

[0026] The one-to-three splitter is signal-connected to the fourth coupler and is used to distribute different signals to the digital repeater assembly.

[0027] Preferably, the digital repeater assembly includes a first array repeater, a second array repeater, and a third array repeater;

[0028] The receivers of the first array repeater, the second array repeater, and the third array repeater are signal-connected to the one-to-three splitter, and the transmitters of the first array repeater, the second array repeater, and the third array repeater are signal-connected to the three-in-one combiner, and are used to relay and amplify the digital signals sent by the relay amplification and multiplexing / demultiplexing assembly.

[0029] Preferably, the first coupler uses a high-frequency 450Mhz coupler. The first coupler accesses the 450Mhz downlink analog signal and is signal-connected to the transmitter of the analog repeater, and is used to couple the 450Mhz downlink analog signal;

[0030] The second coupler uses a low-frequency 450Mhz coupler. The second coupler accesses the 450Mhz uplink analog signal and is signal-connected to the one-to-two splitter of the dual-port receiver, and is used to couple the 450Mhz uplink analog signal.

[0031] Preferably, the third coupler uses a high-frequency 400Mhz coupler. The third coupler accesses the 400Mhz downlink digital signal and is signal-connected to the high-frequency signal channel of the second duplexer, and is used to couple the 400Mhz downlink digital signal;

[0032] The fourth coupler uses a low-frequency 400Mhz coupler. The fourth coupler accesses the 400Mhz uplink digital signal and is signal-connected to the low-frequency signal channel of the second duplexer, and is used to couple the 400Mhz uplink digital signal.

[0033] Preferably, the power loss of the bridge is 3db.

[0034] Preferably, the station digital proximal unit provides an uplink analog signal in the 400Mhz band, a downlink analog signal in the 400Mhz band, an uplink digital signal in the 450Mhz band, and a downlink digital signal in the 450Mhz band.

[0035] A train dispatching radio frequency system station antenna feeder unit provided by the present utility model has the following beneficial effects compared with the prior art:

[0036] (1) By adding a duplex splitter component, the digital signals are simultaneously separated for transmission and reception and quickly switched. The one-to-two splitter and coupler of the dual-port receiver are used to separate and switch the downlink and uplink digital signals, effectively distributing and coupling the communication signals of the station digital proximal unit to the system, realizing the reliable transmission and reception of the uplink and downlink digital signals and the signal routing control, so as to solve the problems of single transmission and reception of signals, relatively isolated transmission and reception signals, and slow response speed in the existing train dispatching radio frequency system.

[0037] (2) The third and fourth couplers are used to couple the analog signals, and the second duplexer separates and switches these analog signals. Finally, the up and downlink analog signals and the station outdoor antenna signals are distributed and combined through a bridge, effectively realizing the signal processing and distribution of the analog signals. It can also combine the analog signals of the station digital proximal unit with the outdoor antenna signals to realize the efficient combination and distribution of the signals, improving the communication efficiency and stability of the system. Brief Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a composition structure diagram of a station antenna feeder unit of a train dispatching radio frequency system of the present invention;

[0040] Figure 2 It is a composition structure diagram of each component of a station antenna feeder unit of a train dispatching radio frequency system of the present invention;

[0041] Figure 3 It is another composition structure diagram of each component of a station antenna feeder unit of a train dispatching radio frequency system of the present invention. Detailed Embodiments

[0042] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0043] Provide a station antenna feeder unit of a train dispatching radio frequency system, as Figure 1As shown in the figure, it includes a digital repeater component 1, a multiplexing / demultiplexing component 2, a signal convergence component 3, a duplexing / demultiplexing component 4, an analog repeater 5, an analog mobile station 6, a station digital proximal unit 7, and a station outdoor antenna;

[0044] The duplexing / demultiplexing component 4 is signal-connected to the analog repeater 5 and the analog mobile station 6, and is used for transceiver separation and switching of digital signals;

[0045] The digital repeater component 1 is signal-connected to the multiplexing / demultiplexing component 2, and is used for relaying and amplifying digital signals;

[0046] The multiplexing / demultiplexing component 2 is signal-connected to the signal convergence component 3 and the digital repeater component 1, and is used for combining and distributing digital signals;

[0047] The signal convergence component 3 is signal-connected to the duplexing / demultiplexing component 4, and is used for coupling the base station signal to the station antenna feeder unit;

[0048] The analog repeater 5 is signal-connected to the duplexing / demultiplexing component 4, and is used for relaying, amplifying and two-way transmission of analog signals;

[0049] The analog mobile station 6 is signal-connected to the duplexing / demultiplexing component 4, and is used for interconnection with the train on-board system;

[0050] The station digital proximal unit 7 is signal-connected to the signal convergence component 3 and the duplexing / demultiplexing component 4, and is used for providing communication signals;

[0051] The station outdoor antenna is signal-connected to the signal convergence component 3, and is used for providing coverage for the base station signal.

[0052] It should be noted that:

[0053] The station radio is a train wireless train dispatching communication device used by railway traffic control, locomotive maintenance and other train operation-related personnel at the station. The traditional station radio mainly uses the locomotive integrated wireless communication device to communicate with the ground equipment, and can provide two wireless communication methods: 450 MHz analog system and GSM-R system. However, the traditional train dispatching radio frequency system has problems such as transceiver signal isolation, low frequency band utilization rate, and slow response speed.

[0054] The station antenna feeder unit of a train dispatching radio frequency system in this embodiment has the following beneficial effects by using the duplexing / demultiplexing component 4 to perform transceiver separation and fast switching on signals:

[0055] Relaying and amplifying digital signals: The digital repeater component 1 is connected to the multiplexing / demultiplexing component 2, and can relay and amplify digital signals, enhancing the signal transmission distance and quality.

[0056] Digital signal combination and distribution: The multiplexing and demultiplexing component 2 is connected to the signal junction component 3 and the digital trunking station component 1, and can combine and distribute digital signals, improving signal processing efficiency and distribution flexibility.

[0057] Base station signal coupling: The signal junction component 3 is connected to the duplex multiplexing and demultiplexing component 4, and can couple the base station signal into the system to ensure effective communication between the system and the base station.

[0058] Digital signal transceiver separation and switching: The duplex multiplexing and demultiplexing component 4 is connected to the analog trunking station 5 and the analog mobile station 6, and can separate and switch the digital signal transceiver, realizing the relay amplification and two-way transmission of the analog signal.

[0059] Train on-vehicle system interconnection: The analog mobile station 6 is connected to the duplex multiplexing and demultiplexing component 4, and can be interconnected with the train on-vehicle system to realize effective communication between the internal and external systems of the train.

[0060] Internal communication in the station: The station digital proximal unit 7 is connected to the signal junction component 3 and the duplex multiplexing and demultiplexing component 4, and can provide communication signals inside the station to ensure the stability and reliability of communication.

[0061] Base station signal coverage extension: The station outdoor antenna is connected to the signal junction component 3, and can provide coverage for the base station signal, expanding the communication range and enhancing the signal coverage ability.

[0062] In summary, the station antenna feeder unit of this train dispatching radio frequency system integrates functions such as digital signal relay amplification, combination and distribution, base station signal coupling, digital signal transceiver separation and switching, train on-vehicle system interconnection, internal communication in the station, and base station signal coverage extension, and can realize an efficient, stable and reliable communication system to meet the various requirements of the train dispatching radio frequency system.

[0063] As Figure 2 shown, the duplex multiplexing and demultiplexing component 4 includes a dual-port receiver one-to-two splitter 41, a first coupler 42, a second coupler 43, and a first duplexer 44;

[0064] The dual-port receiver one-to-two splitter 41 is signal-connected to the second coupler 43 and is used for distributing communication signals;

[0065] The first coupler 42 is signal-connected to the first duplexer 44 and is used for coupling the downlink digital signal sent by the station digital proximal unit and outputting it to the first duplexer 44;

[0066] The second coupler 43 is signal-connected to the first duplexer 44 and is used for coupling the uplink digital signal sent by the station digital proximal unit and outputting it to the first duplexer 44;

[0067] The first duplexer 44 is signal-connected to the first coupler 42 and the second coupler 43, and is used for separating and switching the uplink digital signal and the downlink digital signal for transmission and reception.

[0068] It should be noted that:

[0069] The duplexer and splitter component 4 realizes the separation and switching of the downlink and uplink digital signals through a dual-port receiver one-to-two splitter and a coupler, effectively distributes and couples the communication signals of the station digital proximal unit to the system, and realizes the reliable transmission and reception of the uplink and downlink digital signals and the signal routing control.

[0070] As Figure 2 shown, the signal convergence component 3 includes a third coupler 31, a fourth coupler 32, a second duplexer 33, and a hybrid 34;

[0071] The third coupler 31 is signal-connected to the second duplexer 33 and is used for coupling the downlink analog signal sent by the station digital proximal unit;

[0072] The fourth coupler 32 is signal-connected to the second duplexer 33 and is used for coupling the uplink analog signal sent by the station digital proximal unit;

[0073] The second duplexer 33 is signal-connected to the hybrid 34 and is used for separating and switching the uplink analog signal and the downlink analog signal for transmission and reception;

[0074] The hybrid 34 is signal-connected to the first duplexer 44 and the station outdoor antenna, and is used for distributing and combining the received signals.

[0075] It should be noted that:

[0076] The beneficial effect of the signal convergence component 3 in the station antenna feeder unit of the train dispatching radio frequency system is mainly reflected in the coupling and separation processing of the uplink and downlink analog signals sent by the station digital proximal unit. The third and fourth couplers are used to couple the analog signals, and the second duplexer separates and switches these analog signals for transmission and reception. Finally, the hybrid distributes and combines the uplink and downlink analog signals with the station outdoor antenna signals. This design can not only effectively realize the signal processing and distribution of the analog signals, but also combine the analog signals of the station digital proximal unit with the outdoor antenna signals to achieve the efficient combination and distribution of the signals, improving the communication efficiency and stability of the system. Therefore, the signal convergence component 3 is an important part of realizing the perfect function and stable communication of the station antenna feeder unit of the train dispatching radio frequency system.

[0077] As Figure 2 shown, the combining and splitting component 2 includes a triple combiner 21 and a one-to-three splitter 22;

[0078] The three-in-one combiner 21 is signal-connected to the third coupler 31 and is used to combine different signals of the digital repeater unit 1;

[0079] The one-into-three splitter 22 is signal-connected to the fourth coupler 32 and is used to distribute different signals to the digital repeater unit 1.

[0080] It should be noted that:

[0081] The important role of the combining and splitting component 2 in the station antenna feeder unit of the train dispatching radio frequency system lies in combining and distributing the signals of the digital repeater unit 1. Different signals are combined by the three-in-one combiner 21 to ensure the continuity and stability of signal transmission; at the same time, the combined signals are distributed to the digital repeater unit 1 by the one-into-three splitter 22 to achieve signal distribution and processing. This design effectively improves the system's processing ability and flexibility for different signals, and helps to achieve the efficient operation and signal management of the train dispatching radio frequency system.

[0082] The beneficial effect of the combining and splitting component 2 in the station antenna feeder unit of the train dispatching radio frequency system is mainly reflected in the combination and distribution of different signals of the digital repeater unit 1. Different signals of the digital repeater unit 1 are combined by the three-in-one combiner 21 to ensure the integrity and stability of signal transmission; at the same time, the combined signals are distributed to the digital repeater unit 1 by the one-into-three splitter 22 to achieve effective signal distribution and flexible processing. This design enables the system to efficiently process various signals, achieve accurate signal transmission and reasonable management, and improve the overall performance and operation efficiency of the communication system.

[0083] As Figure 2 shown, the digital repeater unit 1 includes a first array repeater 11, a second array repeater 12, and a third array repeater 13;

[0084] The receivers of the first array repeater 11, the second array repeater 12, and the third array repeater 13 are signal-connected to the one-into-three splitter 22, and the transmitters of the first array repeater 11, the second array repeater 12, and the third array repeater 13 are signal-connected to the three-in-one combiner 21 and are used to relay and amplify the digital signals sent by the combining and splitting component 2.

[0085] It should be noted that:

[0086] The digital repeater unit 1 is used to achieve the function of relay amplification in the station antenna-feeder unit of the train dispatching radio frequency system. This unit consists of three array repeaters, including the first array repeater 11, the second array repeater 12, and the third array repeater 13. Their receivers are connected to the one-into-three splitter 22 of the multiplexer / demultiplexer unit 2 to receive different digital signals from the multiplexer / demultiplexer unit 2. At the same time, the transmitters of the three array repeaters are connected to the three-in-one combiner 21 of the multiplexer / demultiplexer unit 2 to output the digitally amplified signals after relay. This design can not only effectively amplify the received digital signals through relay, but also combine different digital signals into one signal for transmission, greatly improving the transmission efficiency and reliability of the system. Therefore, the digital repeater unit 1 is a key component to ensure the stable and reliable transmission of digital signals in the station antenna-feeder unit of the train dispatching radio frequency system.

[0087] As Figure 3 shown, the first coupler 42 uses a high-frequency 450Mhz coupler. The first coupler 42 is connected to the transmitter signal of the 450Mhz downlink analog signal and the analog repeater 5 to couple the 450Mhz downlink analog signal.

[0088] The second coupler 43 uses a low-frequency 450Mhz coupler. The second coupler 43 is connected to the one-into-two splitter 41 of the dual-port receiver and the 450Mhz uplink analog signal to couple the 450Mhz uplink analog signal.

[0089] It should be noted that:

[0090] The beneficial effects of the first coupler 42 and the second coupler 43 in the station antenna-feeder unit of the train dispatching radio frequency system mainly lie in the coupling process of the 450Mhz downlink analog signal and the 450Mhz uplink analog signal. Through the access of the high-frequency 450Mhz coupler, the first coupler 42 can effectively couple the downlink analog signal to the transmitter signal of the analog repeater 5 to realize the transmission and processing of the signal; while through the access of the low-frequency 450Mhz coupler, the second coupler 43 can couple the uplink analog signal to the one-into-two splitter 41 of the dual-port receiver to realize the processing and distribution of the uplink analog signal.

[0091] As Figure 3 shown, the third coupler 31 uses a high-frequency 400Mhz coupler. The third coupler 31 is connected to the high-frequency signal channel of the second duplexer 33 and the 400Mhz downlink digital signal to couple the 400Mhz downlink digital signal.

[0092] The fourth coupler 32 uses a low-frequency 400Mhz coupler. The fourth coupler 32 is connected, and the 400Mhz uplink digital signal is connected to the signal of the low-frequency band signal channel of the second duplexer 33, and is used to couple the 400Mhz uplink digital signal.

[0093] It should be noted that:

[0094] The third coupler 31 and the fourth coupler 32 are used for coupling in the station antenna feeder unit of the train dispatching radio frequency system. The third coupler 31 uses a high-frequency 400MHz coupler and is used to couple and transmit the 400MHz downlink digital signal to the high-frequency band signal channel of the second duplexer 33; while the fourth coupler 32 uses a low-frequency 400MHz coupler and is used to couple and transmit the 400MHz uplink digital signal to the low-frequency band signal channel of the second duplexer 33. This coupling design for the downlink and uplink digital signals can not only ensure the efficient transmission and processing of digital signals, but also help reduce signal interference and improve the stability and reliability of the communication system. Therefore, the third coupler 31 and the fourth coupler 32 are important guarantees for ensuring the transmission effect of digital signals in the station antenna feeder unit.

[0095] As Figure 3 shown, the power loss of the bridge 34 is 3db. The station digital proximal unit 7 provides an uplink analog signal in the 400Mhz band, a downlink analog signal in the 400Mhz band, an uplink digital signal in the 450Mhz band, and a downlink digital signal in the 450Mhz band.

[0096] It should be noted that:

[0097] The power loss of the bridge 34 in the system is 3dB, and the station digital proximal unit 7 provides an uplink analog signal in the 400MHz band, a downlink analog signal in the 400MHz band, an uplink digital signal in the 450MHz band, and a downlink digital signal in the 450MHz band. Such a design and configuration enable the system to effectively process and transmit signals in different frequency bands, ensuring the stable transmission and high-quality processing of signals. With the power loss of the bridge being 3dB, the synthesis output of signals can be achieved; and the various signal types provided by the station digital proximal unit 7 provide more flexible and comprehensive signal support for the system, thereby improving the performance and reliability of the entire communication system.

[0098] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A station antenna feeder unit of a train dispatching radio frequency system, characterized in that, It includes a digital repeater component (1), a combining and splitting component (2), a signal convergence component (3), a duplex splitting component (4), an analog repeater (5), an analog mobile station (6), a station digital proximal unit (7), and a station outdoor antenna; The duplex splitting component (4) is signal-connected to the analog repeater (5) and the analog mobile station (6), and is used for transceiver separation and switching of digital signals; The digital repeater component (1) is signal-connected to the combining and splitting component (2), and is used for relaying and amplifying digital signals; The combining and splitting component (2) is signal-connected to the signal convergence component (3) and the digital repeater component (1), and is used for combining and distributing digital signals; The signal convergence component (3) is signal-connected to the duplex splitting component (4), and is used for coupling the base station signal to the station antenna feeder unit; The analog repeater (5) is signal-connected to the duplex splitting component (4), and is used for relaying and amplifying analog signals and bidirectional transmission; The analog mobile station (6) is signal-connected to the duplex splitting component (4), and is used for interconnection with the train on-vehicle system; The station digital proximal unit (7) is signal-connected to the signal convergence component (3) and the duplex splitting component (4), and is used for providing communication signals; The station outdoor antenna is signal-connected to the signal convergence component (3), and is used for providing coverage for the base station signal.

2. The station antenna-feeder unit of a train dispatching radio frequency system according to claim 1, characterized in that The duplex splitting component (4) includes a dual-port receiver one-to-two splitter (41), a first coupler (42), a second coupler (43), and a first duplexer (44); The dual-port receiver one-to-two splitter (41) is signal-connected to the second coupler (43), and is used for distributing communication signals; The first coupler (42) is signal-connected to the first duplexer (44), and is used for coupling the downlink digital signal sent by the station digital proximal unit and outputting it to the first duplexer (44); The second coupler (43) is signal-connected to the first duplexer (44), and is used for coupling the uplink digital signal sent by the station digital proximal unit and outputting it to the first duplexer (44); The first duplexer (44) is signal-connected to the first coupler (42) and the second coupler (43), and is used for transceiver separation and switching of the uplink digital signal and the downlink digital signal.

3. The station antenna feeder unit of a train dispatching radio frequency system according to claim 2, characterized in that, The signal convergence component (3) includes a third coupler (31), a fourth coupler (32), a second duplexer (33), and a hybrid (34); The third coupler (31) is signal-connected to the second duplexer (33), and is used for coupling the downlink analog signal sent by the station digital proximal unit; The fourth coupler (32) is signal-connected to the second duplexer (33), and is used for coupling the uplink analog signal sent by the station digital proximal unit; The second duplexer (33) is signal-connected to the hybrid (34), and is used for transceiver separation and switching of the uplink analog signal and the downlink analog signal; The hybrid (34) is signal-connected to the first duplexer (44) and the station outdoor antenna, and is used for distributing and combining the received signals.

4. The station antenna-feeder unit of a train dispatching radio frequency system according to claim 3, characterized in that The combining and splitting component (2) includes a three-in-one combiner (21) and a one-to-three splitter (22); The three-in-one combiner (21) is signal-connected to the third coupler (31) and is used to combine different signals of the digital repeater assembly (1); The one-into-three splitter (22) is signal-connected to the fourth coupler (32) and is used to distribute different signals to the digital repeater assembly (1).

5. The station antenna feeder unit of a train dispatching radio frequency system as claimed in claim 4, characterized in that, The digital repeater assembly (1) includes a first array repeater (11), a second array repeater (12), and a third array repeater (13); The receivers of the first array repeater (11), the second array repeater (12), and the third array repeater (13) are signal-connected to the one-into-three splitter (22), and the transmitters of the first array repeater (11), the second array repeater (12), and the third array repeater (13) are signal-connected to the three-in-one combiner (21) and are used to relay and amplify the digital signals sent by the combining and splitting component (2).

6. The station antenna feeder unit of a train dispatching radio frequency system as described in claim 5, characterized in that The first coupler (42) uses a high-frequency 450Mhz coupler. The first coupler (42) accesses the 450Mhz downlink analog signal and is signal-connected to the transmitter of the analog repeater (5) and is used to couple the 450Mhz downlink analog signal; The second coupler (43) uses a low-frequency 450Mhz coupler. The second coupler (43) accesses the 450Mhz uplink analog signal and is signal-connected to the one-into-two splitter for dual-port receivers (41) and is used to couple the 450Mhz uplink analog signal.

7. The station antenna feeder unit of a train dispatching radio frequency system according to claim 5, characterized in that The third coupler (31) uses a high-frequency 400Mhz coupler. The third coupler (31) accesses the 400Mhz downlink digital signal and is signal-connected to the high-frequency signal channel of the second duplexer (33) and is used to couple the 400Mhz downlink digital signal; The fourth coupler (32) uses a low-frequency 400Mhz coupler. The fourth coupler (32) accesses the 400Mhz uplink digital signal and is signal-connected to the low-frequency signal channel of the second duplexer (33) and is used to couple the 400Mhz uplink digital signal.

8. The station antenna feeder unit of a train dispatching radio frequency system according to claim 5, characterized in that The power loss of the bridge (34) is 3db.

9. The station antenna feeder unit of a train dispatching radio frequency system according to claim 5, characterized in that The station digital proximal unit (7) provides an uplink analog signal in the 400Mhz band, a downlink analog signal in the 400Mhz band, an uplink digital signal in the 450Mhz band, and a downlink digital signal in the 450Mhz band.

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