Leakage cable assembly, antenna system and base station

Abstract

The utility model provides a leaky coaxial cable assembly, an antenna system and a base station, relates to the technical field of communication, and aims to solve the problem of poor signal coverage capability of the leaky coaxial cable assembly. The leaky cable assembly provided by the utility model comprises a leaky cable and a power amplifier, the power amplifier is connected between a first section of cable and a second section of cable of the leaky cable, and the power amplifier is used for amplifying signals transmitted between the first section of cable and the second section of cable; the end, away from the power amplifier, of the first cable is in feed connection with a communication system, and the first inner conductor or the second outer conductor is in power supply connection with the power amplifier. In the leaky cable assembly provided by the utility model, the power amplifier can amplify the signal to make up the loss of the signal when the signal is transmitted in the leaky cable, and in addition, the power supply of the power amplifier can be transmitted through the first section of cable, so that the power supply of the power amplifier by using an additional cable can be avoided; and the laying difficulty of the leaky coaxial cable assembly can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to a leaky cable component, an antenna system and a base station. Background Art

[0002] With the continuous development of infrastructure projects such as railways and highways, the number and length of tunnels have increased significantly. However, wireless signals transmitted by antennas located outside tunnels have difficulty reaching the interior. Consequently, when people travel through tunnels by train or bus, they often experience poor communication or signal interruptions. Currently, to address poor wireless signal coverage within tunnels, leaky cable antennas are often installed. Leaky cable antennas, also known as leaky coaxial cables, are typically installed within tunnels. Simply put, signals can be transmitted along the length of the antenna while also leaking outward through gaps within the antenna. This means that leaky cable antennas not only transmit signals but also radiate electromagnetic waves. In practical applications, as signals leak from the antenna, signal strength decreases, impacting antenna performance and even preventing effective signal coverage. Utility Model Content

[0003] The utility model provides a leaky cable component, an antenna system and a base station with good signal coverage performance.

[0004] In a first aspect, the present invention provides a leaky cable assembly comprising a leaky cable and a power amplifier. The leaky cable comprises a first cable segment and a second cable segment, with the power amplifier connected between the first and second cable segments. The power amplifier is configured to amplify signals transmitted between the first and second cable segments. The first cable segment comprises a first inner conductor, a first insulator, and a first outer conductor, arranged sequentially from the inside to the outside. The first outer conductor has a first radiating slot extending through its thickness. When communication signals are transmitted within the first cable segment, the first radiating slot allows the wireless signal to be radiated outward or received from the outside, thereby enabling wireless signal transmission and reception. The second cable segment comprises a second inner conductor, a second insulator, and a second outer conductor, arranged sequentially from the inside to the outside. The second outer conductor has a second radiating slot extending through its thickness. When communication signals are transmitted within the second cable segment, the second radiating slot allows the wireless signal to be radiated outward or received from the outside, thereby enabling wireless signal transmission and reception. The end of the first cable segment remote from the power amplifier is connected to a communication system, and the first inner conductor or the second outer conductor is connected to the power supply of the power amplifier to meet the power amplifier's power requirements. In the leaky cable assembly provided by the present invention, a power amplifier can be configured to amplify the signal to compensate for signal loss during transmission in the leaky cable. In specific applications, the power amplifier can amplify the uplink signal, or the power amplifier can also amplify the downlink signal. Alternatively, the power amplifier can amplify both the uplink and downlink signals. In addition, in the leaky cable assembly provided by the present invention, the power supply for the power amplifier can also be transmitted through the first section of the cable, thereby avoiding the need for additional cables to power the power amplifier and reducing the difficulty of laying out the leaky cable assembly.

[0005] In a specific configuration, the power amplifier includes a power amplifier circuit and a power supply circuit. The power amplifier circuit is signal-connected to the first cable segment and the second cable segment. The power amplifier circuit is used to amplify the signal between the first cable segment and the second cable segment. One end of the power supply circuit is connected to the first inner conductor or the first outer conductor, and the other end of the power supply circuit is connected to the power amplifier circuit for supplying power to the power amplifier circuit. Alternatively, it can be understood that an external power supply can supply power to the power amplifier through the first outer conductor of the first cable segment, or the power supply can also supply power to the power amplifier through the first inner conductor of the first cable segment. Alternatively, the power supply can also supply power to the power amplifier through the first inner conductor and the first outer conductor of the first cable segment.

[0006] In one example, the first circuit includes a first port, a second port, and a third port. A capacitor is disposed between the first port and the second port, and an inductor is disposed between the first port and the third port. The first port is connected to the first cable segment, the second port is connected to the power amplifier circuit signal in the power amplifier, and the third port is connected to the power supply circuit in the power amplifier. Communication signals in the first cable segment can be transmitted to the power amplifier circuit via the second port, so that the power amplifier circuit can amplify and process the communication signals. In addition, direct current (DC) power transmitted in the first cable segment can be transmitted to the power supply circuit via the third port, which then provides the DC power to the power amplifier circuit to meet the power supply requirements of the power amplifier circuit.

[0007] In one example, the leaky cable assembly further includes a first circuit, one end of which is connected to the first cable segment and the other end to the power amplifier circuit and the power supply circuit. The first circuit is used to establish a signal connection between the first cable segment and the power amplifier circuit, and also to establish a power connection between the power supply circuit and the first cable segment. Alternatively, it can be understood that the first circuit functions as a branch, providing the alternating communication signal in the first cable segment to the power amplifier circuit for amplification. Furthermore, the first circuit is used to provide the DC power from the first cable segment to the power supply circuit, thereby powering the power amplifier circuit.

[0008] In a specific configuration, the first circuit is a bias device or other circuit or device having the above functions. In addition, in a specific configuration, the first circuit can be integrated into a power amplifier, or the first circuit can also be an independent circuit or device.

[0009] In one example, a power amplifier includes a first pair of connectors and a second pair of connectors. When the first circuit is integrated into the power amplifier, the first pair of connectors are connected to the first cable segment by plugging or welding, and the second pair of connectors are connected to the second cable segment by plugging or welding. Plugging facilitates improved connection convenience between the power amplifier and the first and second cable segments. Alternatively, welding provides improved connection reliability. In specific applications, the connection method between the power amplifier and the first and second cable segments can be appropriately selected based on actual needs.

[0010] When the first circuit is independent of the power amplifier, the first circuit is connected between the first section of cable and the power amplifier, wherein the first pair of connectors of the power amplifier can be connected to the first circuit by plugging or welding.

[0011] In one example, the leaky cable assembly also includes a protective cover that covers the connection between the power amplifier and the first cable segment. In a specific configuration, a protective cover may also be provided at the connection between the power amplifier and the second cable segment. The protective cover effectively enhances the airtightness or insulation of the connection, thereby improving the operational stability and reliability of the leaky cable assembly.

[0012] In an example, the leaky cable assembly further includes a radiation component, which is connected to an end of the second cable section away from the power amplifier, and the maximum radiation direction of the radiation component is away from the power amplifier.

[0013] When the radiating assembly includes multiple radiators operating in different frequency bands, the leaky cable assembly further includes multiple filters, and the multiple radiators are respectively connected to the power amplifier signal through the multiple filters. Specifically, the multiple radiators may include at least two radiators operating in different frequency bands, or at least two radiators operating in the same frequency band.

[0014] In specific applications, a power amplifier can amplify signals in a specific frequency band or across all frequency bands. Specifically, the power amplifier is used to amplify signals from at least one filter. The number of radiators can be the same as the number of filters, with a one-to-one correspondence between radiators and filters. Alternatively, radiators operating in the same frequency band within a radiating component can be connected to the power amplifier signal through the same filter.

[0015] In a specific configuration, the filter can be integrated into the power amplifier, or integrated with the radiating component, or a standalone component.

[0016] In a second aspect, the present invention further provides an antenna system comprising a communication system, a power supply, and at least one of the aforementioned leaky cable assemblies. The power supply is connected to an end of a first cable segment remote from a power amplifier. Alternatively, the first inner conductor of the first cable segment is connected to the power amplifier and the power supply for power supply, or the first outer conductor of the first cable segment is connected to the power amplifier and the power supply for power supply. The power supply can supply power to the power amplifier in the leaky cable assembly through the first cable segment, thereby meeting the power amplifier's power requirements.

[0017] In one example, the antenna system further includes a second circuit, one end of which is connected to the first cable segment and the other end of which is connected to the communication system and the power supply. The second circuit is used to establish a signal connection between the first cable segment and the communication system, and also to establish a power connection between the power supply and the first cable segment. Alternatively, it can be understood that the second circuit functions as a combiner, capable of providing alternating communication signals from the communication system to the first cable segment. The second circuit is also configured to provide DC power from the power supply to the first cable segment, thereby enabling simultaneous transmission of communication signals and power within the first cable segment.

[0018] In one example, the second circuit includes a first port, a second port, and a third port. A capacitor is disposed between the first port and the second port, and an inductor is disposed between the first port and the third port. The first port is connected to the first cable segment, the second port is connected to the communication system signal, and the third port is connected to the power supply. The second circuit can combine the communication signal and the power supply, allowing the communication signal and the power supply to be transmitted together via the coaxial cable to the power amplifier.

[0019] In one example, the first port of the first circuit and the first port of the second circuit are both connected to the inner conductor or outer conductor of the first cable segment, thereby enabling signal and power connections between the first circuit, the second circuit, and the first cable segment. Alternatively, the first port of the first circuit and the first port of the second circuit are both connected to the inner conductor and outer conductor of the first cable segment, thereby enabling signal and power connections between the first circuit, the second circuit, and the first cable segment.

[0020] In specific applications, the second circuit is a bias device or other circuits or devices having the above functions.

[0021] In a specific application, the communication system includes a radio remote unit and a multi-system access platform, and the radio remote unit is connected to the first section of cable feeder via the multi-system access platform.

[0022] In one example, the second circuit may be integrated with the multi-system access platform. Alternatively, the second circuit may be an independent circuit or device.

[0023] In one example, the communication system further includes a baseband processing unit, which is signal-connected to the radio remote unit.

[0024] In a third aspect, the present invention further provides a base station comprising a base station antenna and any of the aforementioned antenna systems, the base station antenna being connected to a communication system within the antenna system. The base station provided by the present invention, equipped with the aforementioned antenna system and base station antenna, can provide effective signal coverage in hollow environments such as tunnels and external environments, while exhibiting excellent signal transmission and reception performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of an application scenario of a leaky cable assembly provided by an embodiment of the present utility model;

[0026] Figure 2 A schematic diagram of an application scenario of an antenna system provided by an embodiment of the present utility model;

[0027] Figure 3 A simplified structural diagram of a conventional leaky cable assembly provided in an embodiment of the present utility model;

[0028] Figure 4 A schematic diagram of the exploded structure of a leaky cable provided in an embodiment of the present utility model;

[0029] Figure 5 A schematic structural diagram of an antenna system provided in an embodiment of the present utility model;

[0030] Figure 6 A structural block diagram of an antenna system provided in an embodiment of the present utility model;

[0031] Figure 7 A circuit diagram of a first circuit provided in an embodiment of the present utility model;

[0032] Figure 8 A circuit diagram of a second circuit provided in an embodiment of the present utility model;

[0033] Figure 9 A schematic diagram of the exploded structure of a leaky cable assembly provided by an embodiment of the present utility model;

[0034] Figure 10 A schematic diagram of a partial structure of an antenna system provided in an embodiment of the present utility model;

[0035] Figure 11 A schematic structural diagram of an end-fire array antenna provided in an embodiment of the present utility model;

[0036] Figure 12 The directional pattern of an end-fire array antenna provided in an embodiment of the present utility model;

[0037] Figure 13 A simplified structural diagram of another antenna system provided in an embodiment of the present utility model;

[0038] Figure 14 A simplified structural diagram of another antenna system provided in an embodiment of the present utility model;

[0039] Figure 15 A schematic diagram of an application scenario of a base station provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0041] To facilitate understanding of the leaky cable assembly and antenna system provided by the embodiments of the present invention, the application scenarios thereof are first introduced below.

[0042] The leaky cable assembly and antenna system provided by the embodiments of the present invention can be used in hollow environments such as high-speed rail tunnels, highway tunnels, submarine tunnels, and subway tunnels to achieve effective coverage of wireless signals in hollow environments.

[0043] like Figure 1 As shown in Figure 1, with the continuous development of infrastructure projects such as railways and highways, the number and length of tunnels T in mountains have increased significantly. The wireless signals transmitted by base station antennas 01 located outside tunnel T have difficulty reaching the interior of tunnel T. Therefore, when people travel through tunnel T by train or car, they may experience poor communication or signal interruption. Currently, to address the issue of poor wireless signal coverage within tunnel T, leaky cable assemblies are typically installed within tunnel T. These assemblies provide effective wireless signal coverage within the tunnel, thereby filling the signal coverage blind spots of base station antennas 01.

[0044] like Figure 2 As shown, in this scenario, it includes a communication system 001, a base station antenna 01 and a leaky cable assembly 02. The communication system 001 is connected to the base station antenna 01 through a coupler 03 for feeding, and is used to send radio frequency signals to the base station antenna 01 or receive wireless signals received by the base station antenna 01. In addition, the communication system 001 is connected to the leaky cable assembly 02 through a coupler 03, a near-end repeater 04, and a far-end repeater 05, and is used to send radio frequency signals to the leaky cable assembly 02 or receive wireless signals received by the leaky cable assembly 02. That is, the base station antenna 01 can provide effective signal coverage for the space outside the tunnel T, and the leaky cable assembly 02 can provide effective signal coverage for the space inside the tunnel T. It can be understood that in some application scenarios such as submarine tunnels, the base station antenna 01 can also be omitted, and will not be described in detail here.

[0045] In specific applications, the communication system 001 can be used to send a feed signal to the base station antenna 01 and the leaky cable assembly 02, so that the wireless signal can be radiated outward through the base station antenna 01 and the leaky cable assembly 02. In addition, the communication system 001 can also receive the wireless signal received by the base station antenna 01 and the leaky cable assembly 02, and perform operations and other processing on it. Figure 2In the example provided, coupler 03, near-end repeater 04, and remote repeater 05 are not included in communication system 001. In other examples, coupler 03, near-end repeater 04, and remote repeater 05 can also be considered components of communication system 001. Alternatively, it can be understood that communication system 001 is a general term for the functional devices connected to the front end of leaky cable assembly 02, capable of providing RF signals to and receiving signals from leaky cable assembly 02.

[0046] The communication system 001 may be located in a base station subsystem (BBS), a UMTS terrestrial radio access network (UTRAN), or an evolved universal terrestrial radio access network (E-UTRAN), and may be used to provide cell coverage for wireless signals to enable communication between a terminal device and a wireless network. Specifically, the communication system 001 may be a base transceiver station (BTS) in a global system for mobile communication (GSM) or a code division multiple access (CDMA) system, a node B (NB) in a wideband code division multiple access (WCDMA) system, an evolved node B (eNB or eNodeB) in a long term evolution (LTE) system, or a wireless controller in a cloud radio access network (CRAN) scenario. Alternatively, the communication system may be a relay station, an access point, a vehicle-mounted device, a wearable device, a g-node (gNodeB or gNB) in a new radio (NR) system, or a base station in a future evolved network, etc., and the embodiments of the present invention are not limited thereto.

[0047] The leaky cable assembly 02 in the present invention can also be used in access network equipment, which is sometimes also called an access node. The access network equipment has wireless transceiver functions and is used to communicate with the terminal. Access network equipment includes but is not limited to base stations (base stations) in the above-mentioned communication systems, evolved NodeBs (eNodeBs), transmission reception points (TRPs), next-generation NodeBs (gNBs) in 5G mobile communication systems, access network equipment or modules of access network equipment in future communication networks, open access networks (ORAN) systems, base stations in future mobile communication systems, or access nodes in WiFi systems. The access network equipment can also be a module or unit that can implement some of the functions of a base station. For example, the access network equipment can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU) described below. Among them, in the ORAN system, CU can also be called O-CU, DU can also be called open (open, O)-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CUP-UP, and RU can also be called O-RU. The access network device can be a macro base station, a micro base station or an indoor station), a relay node or a donor node, or a wireless controller in a cloud radio access network (CRAN) scenario. Optionally, the access network device can also be a server, a wearable device, or a vehicle-mounted device. For example, the access network device in the vehicle to everything (V2X) technology can be a road side unit (RSU). Multiple access network devices in the communication system can be base stations of the same type or different types. The base station can communicate with the terminal or communicate with the terminal through a relay station. The terminal can communicate with multiple base stations in different access technologies.

[0048] like Figure 3As shown, the current leaky cable assembly 02 may include a leaky cable 021 and a load 022 located at one end of the leaky cable 021. The repeater remote unit 05 is connected to one end of the leaky cable 021 for power supply. The load 022 is connected to the end of the leaky cable 021 away from the repeater remote unit 05 and is used to dissipate excess energy to reduce echo reflections, thereby ensuring the signal transmission and reception performance of the leaky cable 021. Assuming the total length of the tunnel T is approximately S, the length of the leaky cable 021 is also approximately S, allowing the leaky cable 021 to provide effective signal coverage within the tunnel T.

[0049] The leaky cable 021, also known as a leaky cable antenna, has both signal transmission and wireless signal transceiver functions. Specifically, signals can be transmitted along the length of the leaky cable 021 within the leaky cable 021. Furthermore, the leaky cable 021 can also transmit and receive wireless signals through its own radiation gaps.

[0050] For example, the signal is transmitted from one end (such as Figure 3 The left end of the Figure 3 During transmission (the right end in FIG), the signal inside the leaky cable 021 can also radiate outward through the radiation gaps in the leaky cable 021, thereby covering the space within the tunnel T. In actual applications, the signal intensity in the leaky cable 021 will decrease during transmission, and therefore the signal radiation capability will also be reduced, which is not conducive to ensuring signal coverage performance throughout the tunnel T.

[0051] To this end, embodiments of the present invention provide a leaky cable assembly that can effectively improve signal receiving and transmitting performance, and an antenna system equipped with the leaky cable assembly.

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0053] like Figure 4 As shown, in an example provided by the present invention, a leaky cable assembly 10 includes a leaky cable 11 and a power amplifier 12. The leaky cable 11 includes a first cable segment 11a and a second cable segment 11b. The power amplifier 12 is connected between the first cable segment 11a and the second cable segment 11b. The power amplifier 12 is used to amplify the signal transmitted between the first cable segment 11a and the second cable segment 11b.

[0054] like Figure 4As shown, the first cable section 11a includes a first inner conductor 111a, a first insulator 112a, a first outer conductor 113a, and a first protective layer 114a, arranged in order from inside to outside. The first outer conductor 113a has a first radiating slot 1131a extending through its thickness. The first inner conductor 111a and the first outer conductor 113a can be made of copper, aluminum, or other conductive materials. The first insulator 112a can be made of a material with good insulation and chemical stability, such as polyethylene or nylon. The first insulator 112a is located between the first inner conductor 111a and the first outer conductor 113a to ensure a stable connection between the two conductors. The first protective layer 114a is typically made of an insulating material such as polyvinyl chloride or polytetrafluoroethylene propylene. The first protective layer 114a can effectively protect the first outer conductor 113a, and the first protective layer 114a has good rigidity, which can prevent the first cable section 11a from being excessively bent under external force, thereby improving the use effect and reliability of the first cable section 11a.

[0055] When communication signals are transmitted within the first cable segment 11a, the first radiating slots 1131a can radiate wireless signals outward or receive external wireless signals, thereby achieving wireless signal transmission and reception. It will be appreciated that in actual applications, multiple first radiating slots 1131a are arranged in the first outer conductor 113a along the length of the first cable segment 11a. In specific configurations, the size, spacing, and other parameters of the first radiating slots 1131a can be appropriately set based on practical needs, and this invention does not impose any restrictions thereon.

[0056] The second cable segment 11b includes, arranged in order from inside to outside, a second inner conductor 111b, a second insulator 112b, a second outer conductor 113b, and a second protective layer 114b. The second outer conductor 113b has a second radiating slot 1131b extending through its thickness. The second inner conductor 111b and the second outer conductor 113b can be made of copper, aluminum, or other conductive materials. The second insulator 112b can be made of a material with good insulation and chemical stability, such as polyethylene or nylon. The second insulator 112b is located between the second inner conductor 111b and the second outer conductor 113b to ensure a stable connection between them. The second protective layer 114b is typically made of an insulating material such as polyvinyl chloride or polytetrafluoroethylene propylene. The second protective layer 114b effectively protects the second outer conductor 113b and has good rigidity, preventing the second cable segment 11b from excessive bending under external forces, thereby improving the performance and reliability of the second cable segment 11b.

[0057] Please refer to Figure 4 and Figure 5The antenna system 20 includes a communication system 21, a power supply 22, and a leaky cable assembly 10. The end of the first cable section 11a away from the power amplifier 12 is connected to the communication system 21. Communication signals can be transmitted between the first inner conductor 111a and the first outer conductor 113a to achieve signal transmission between the communication system 21 and the leaky cable 11. In addition, the first inner conductor 111a or the first outer conductor 113a is connected to the power amplifier 12 for power supply. When the power supply 22 is connected to the first inner conductor 111a or the first outer conductor 113a, the direct current provided by the power supply 22 can be transmitted to the power amplifier 12 through the first cable section 11a, thereby meeting the power demand of the power amplifier 12.

[0058] When communication signals are transmitted within the second cable segment 11b, the second radiating slots 1131b can radiate wireless signals outward or receive external wireless signals, thereby achieving wireless signal transmission and reception. It will be appreciated that in actual applications, multiple second radiating slots 1131b are arranged in the second outer conductor 113b along the length of the second cable segment 11b. In specific configurations, the size, spacing, and other parameters of the second radiating slots 1131b can be appropriately set based on practical needs, and this invention does not impose any restrictions thereon.

[0059] Alternatively, it can be understood that uplink or downlink signals may suffer losses when transmitted through the leaky cable 11. In the example provided by the present invention, by disposing a power amplifier 12 between the first cable segment 11a and the second cable segment 11b, the uplink or downlink signals can be amplified to compensate for the losses incurred when the signals are transmitted through the first cable segment 11a or the second cable segment 11b, thereby ensuring the signal transmission and reception performance of the leaky cable assembly 10.

[0060] It should be noted that, in practical applications, the power amplifier 12 may amplify the uplink signal, or the downlink signal, or the power amplifier 12 may amplify both the uplink signal and the downlink signal.

[0061] In addition, in the example provided by the present invention, the first cable section 11a also has a power transmission function, thereby powering the power amplifier 12. That is, the first cable section 11a not only has the communication signal transmission function and the wireless signal transceiver function, but also has the power transmission capability.

[0062] In a specific configuration, the communication system 21 can be used to send a feed signal to the leaky cable assembly 10, thereby radiating wireless signals outward through the leaky cable assembly 10. Furthermore, the communication system 21 can also receive wireless signals received by the leaky cable assembly 10 and perform operations and other processing on them. The devices or components included in the communication system 21 can be diverse.

[0063] For example, Figure 6 As shown, in an example provided by the present invention, the communication system 21 includes a baseband processing unit 211 (BBU), a remote radio unit 212 (RRU), a multi-system access platform 213 (point of interface, POI), and a second circuit 214. The baseband processing unit 211, also known as a baseband unit, is used to access the operator's communication network. The remote radio unit 212, also known as an RF processing unit, is used to up-convert and amplify the intermediate frequency signal emitted by the baseband processing unit 211 and provide it to the multi-system access platform 213. The multi-system access platform 213 is used to combine signals from different operators and provide them to the second circuit 214. Alternatively, the multi-system access platform 213 can be used to split the combined signal of the second circuit 214 and connect it to the remote radio units 212 and baseband processing units 211 of different operators. Alternatively, it can be understood that in the communication system 21 provided by the present invention, the communication system 21 can have the functions of the aforementioned baseband processing unit 211, radio remote unit 212, and multi-system access platform 213. In summary, the communication system 21 has the function of accessing the operator's communication network, the function of sending a feed signal to the leaky cable assembly 10, and the function of processing the communication signals received by the leaky cable assembly 10.

[0064] In addition, it should be noted that Figure 6 In the example provided in FIG, the power supply 22 is an independent device or apparatus. In other examples, the power supply 22 may also be integrated into the remote radio unit 212. Furthermore, when the power supply 22 is also integrated into the remote radio unit 212, the remote radio unit 212 is communicatively connected to the multi-system access platform 212, and the power provided by the remote radio unit 212 may be connected to the second circuit 214 via a cable.

[0065] Furthermore, in actual applications, the baseband processing unit 211, the radio remote unit 212, the multi-system access platform 213, the second circuit 214, and the power supply 22 can be installed in the same spatial area. Alternatively, the baseband processing unit 211 can be deployed remotely, and the baseband processing unit 211 and the radio remote unit 212 can be connected via an optical fiber or other cable capable of transmitting communication signals.

[0066] In addition, the second circuit 214 is connected to the power supply 22 , so that the direct current provided by the power supply 22 can be provided to the power amplifier 12 through the second circuit 214 for powering.

[0067] Specifically, the communication signals of the multi-system access platform 213 and the power supply of the power supply 22 are combined in the second circuit 214, so that the communication signals and the power supply can be transmitted simultaneously through the first cable segment 11a. The second circuit 214 can be integrated with the multi-system access platform 213, or the second circuit 214 can be an independent circuit or device.

[0068] In addition, if Figure 6 As shown, in the example provided by the present invention, the power amplifier 12 includes a first circuit 121, a power amplifier circuit 122, and a power supply circuit 123. One end of the first circuit 121 is connected to the first cable segment 11a, and the other end is connected to the power amplifier circuit 122 and the power supply circuit 123. The first circuit 121 is used to achieve a signal connection between the first cable segment 11a and the power amplifier circuit 122, and also to achieve a power supply connection between the power supply circuit 123 and the first cable segment 11a. In other words, the first circuit 121 can branch the communication signal and power supply transmitted in the first cable segment 11a, thereby achieving a signal connection between the first cable segment 11a and the power amplifier circuit 122, so that the power amplifier circuit 122 can amplify the communication signal. In addition, the first circuit 121 can achieve a power supply connection between the first cable segment 11a and the power supply circuit 123, so that electrical energy can be supplied to the power amplifier circuit 122 through the power supply circuit 123. Furthermore, a load 13 is connected to the end of the second cable segment 11b (i.e., the end away from the power amplifier 12). Load 13 may include a resistor or other device to dissipate energy at the end of the second cable segment 11b to reduce return loss. In specific configurations, load 13 can be a commonly used type, and this invention does not impose any restrictions thereon.

[0069] In specific configurations, the circuit structure of the first circuit 121 can be diverse.

[0070] For example, Figure 7As shown, in one example provided by the present invention, the first circuit 121 includes a first port 121a, a second port 121b, and a third port 121c. Furthermore, a capacitor C is provided between the first port 121a and the second port 121b, and an inductor S is provided between the first port 121a and the third port 121c. The capacitor C conducts alternating communication signals and blocks direct current. The inductor S blocks alternating communication signals and conducts direct current. The first port 121a is connected to the first cable segment 11a. Therefore, the communication signal in the first cable segment 11a can be transmitted via the second port 121b to the power amplifier circuit 122, enabling the power amplifier circuit 122 to amplify the communication signal. Furthermore, the direct current transmitted in the first cable segment 11a can be transmitted via the third port 121c to the power supply circuit 123, which then supplies the direct current to the power amplifier circuit 122 to meet the power supply requirements of the power amplifier circuit 122.

[0071] Correspondingly, such as Figure 8 As shown, in one example provided by the present invention, the second circuit 214 includes a first port 214a, a second port 214b, and a third port 214c. A capacitor C is provided between the first port 214a and the second port 214b, and an inductor L is provided between the first port 214a and the third port 214c. The first port 214a is connected to the first cable segment 11a, and the second port 214b is connected to the multi-system access platform 213 in the communication system 21. Therefore, alternating communication signals can be transmitted to the first cable segment 11a through the second port 214b and the first port 214a. In addition, the third port 214c is connected to the power supply 22. Therefore, direct current can be transmitted to the first cable segment 11a through the third port 214c and the first port 214a.

[0072] In summary, the second circuit 214 can combine the communication signal and the power supply, allowing them to be transmitted together to the power amplifier 12 via the first cable segment 11a. The first circuit 121 can branch the communication signal and the power supply, allowing the communication signal to be transmitted to the power amplifier circuit 122 in the power amplifier 12 for amplification. The DC power supply can be transmitted to the power supply circuit 123 in the power amplifier 12 to power the power amplifier circuit 122.

[0073] It should be noted that the communication signal between the communication system 21 and the power amplifier 12 is transmitted bidirectionally, that is, the communication signal in the communication system 21 can be transmitted to the power amplifier 12 through the first section of cable 11a, and the communication signal in the power amplifier 12 can also be transmitted to the communication system 21 through the first section of cable 11a.

[0074] In a specific configuration, the first circuit 121 and the second circuit 214 may be bias tees (BTs). Alternatively, the first circuit 121 and the second circuit 214 may also adopt other circuit structures, which will not be described in detail here.

[0075] In addition, during specific settings, the power amplifier circuit 122 may include electronic components such as capacitors, inductors, and transistors. During specific settings, the specific circuit structure in the power amplifier circuit 122 may be reasonably selected and set according to actual needs, and the present invention does not impose any restrictions on this.

[0076] In addition, the power supply circuit 123 may include electronic components such as resistors and capacitors. During specific configuration, the specific circuit structure of the power supply circuit 123 may be reasonably selected and configured according to actual needs, and the present invention does not impose any restrictions on this.

[0077] In a specific configuration, the first port 121a in the first circuit 121 and the first port 214a in the second circuit 214 can both be connected to the first outer conductor 113a of the first cable segment 11a, so that the DC power provided by the power supply 22 can be supplied to the power amplifier 12 through the first outer conductor 113a. Alternatively, the first port 121a in the first circuit 121 and the first port 214a in the second circuit 214 can both be connected to the first inner conductor 111a of the first cable segment 11a, so that the DC power provided by the power supply 22 can be supplied to the power amplifier 12 through the first inner conductor 111a. Alternatively, the first port 121a in the first circuit 121 and the first port 214a in the second circuit 214 can both be connected to the first inner conductor 111a and the first outer conductor 113a of the first cable segment 11a, so that the DC power provided by the power supply 22 can be supplied to the power amplifier 12 through the first inner conductor 111a and the first outer conductor 113a. In specific configuration, the connection relationship between the first circuit 121, the second circuit 214 and the first cable segment 11a can be reasonably configured according to actual needs, which will not be described in detail here. In addition, the first circuit 121 can be integrated into the power amplifier 12 or configured separately.

[0078] In addition, if Figure 9As shown, in a specific configuration, when the first circuit 121 is integrated into the power amplifier 12, the power amplifier 12 may include a first pair of connectors 120a and a second pair of connectors 120b. The first pair of connectors 120a may be plugged into one end of the first cable segment 11a to achieve a signal connection and a power supply connection between the power amplifier 12 and the first cable segment 11a. The second pair of connectors 120b may be plugged into the second cable segment 11b to achieve a signal connection between the power amplifier 12 and the second cable segment 11b. The plug-in connection method is conducive to achieving a quick connection between the power amplifier 12 and the first cable segment 11a and the second cable segment 11b, and has a better connection effect. In other examples, the power amplifier 12 and the first cable segment 11a may also be connected by welding or the like, and the power amplifier 12 and the second cable segment 11b may also be connected by welding or the like, which will not be elaborated here.

[0079] It should be noted that when the first circuit 121 is an independent device, the first circuit 121 may also be configured with a structure similar to the first and second pairs of connectors described above. That is, the first circuit 121 may be connected between the first cable segment 11a and the power amplifier 12, and the first circuit 121 may be plugged into the first cable segment 11a or into the power amplifier 12.

[0080] In addition, when the second circuit 214 is an independent device, the second circuit 214 can also be configured with a structure similar to the first pair of connectors, that is, the second circuit 214 can be connected to the first cable 11a by plugging.

[0081] In addition, if Figure 9 As shown, to ensure the reliability of the connection between the power amplifier 12 and the first cable segment 11a, in the example provided by the present invention, a protective cover 15 can also be used to effectively cover the connection between the power amplifier 12 and the first cable segment 11a to ensure the airtightness of the connection between the power amplifier 12 and the first cable segment 11a. Specifically, the protective cover 15 can be a heat shrink tubing, an insulating sleeve, or the like. In specific applications, the specific type and material of the protective cover 15 can be appropriately selected based on actual needs. Furthermore, to ensure the reliability of the connection between the power amplifier 12 and the second cable segment 11b, in the example provided by the present invention, a protective cover 16 can also be used to effectively cover the connection between the power amplifier 12 and the second cable segment 11b to ensure the airtightness of the connection between the power amplifier 12 and the second cable segment 11b. Specifically, the protective cover 16 can be a heat shrink tubing, an insulating sleeve, or the like. In specific applications, the specific type and material of the protective cover 16 can be appropriately selected based on actual needs.

[0082] In addition, in specific applications, the leaky cable 11 can operate in one frequency band or multiple frequency bands. In specific applications, the operating frequency band of the leaky cable 11 can be reasonably selected and adjusted according to actual needs.

[0083] In addition, the above example uses the example of a load 13 installed at the end of the second cable segment 11b as an example. In other examples, the load 13 can also be replaced with a radiating component capable of signal transmission and reception. Furthermore, the radiating component 13 can include a single radiator or multiple radiators. When the radiating component 13 includes multiple radiators, the operating frequency bands of the multiple radiators can be the same or different.

[0084] For example, Figure 10 As shown, in the example provided by the present invention, the radiation component 13 includes two radiators, namely the radiator 131 and the radiator 132, wherein the operating frequency bands of the radiator 131 and the radiator 132 are different. For example, the operating frequency band of the radiator 131 can be around 3.5 GHz, and the operating frequency band of the radiator 132 can be around 2.6 GHz. In a specific setting, the radiator 131 can be connected to the power amplifier 12 through the filter 14a, and the radiator 132 can be connected to the power amplifier 12 through the filter 14b. Among them, the filter 14a and the filter 14b can both be bandpass filters, and the filter 14a is used to allow signals in the frequency band of around 3.5 GHz to pass through and block signals in other frequency bands. The filter 14b is used to allow signals in the frequency band of around 2.6 GHz to pass through and block signals in other frequency bands.

[0085] In specific applications, the power amplifier 12 may amplify signals in a certain frequency band, or may amplify signals in multiple frequency bands or all frequency bands.

[0086] For example, the power amplifier 12 may amplify signals in the 3.5 GHz frequency band but not in the 2.6 GHz frequency band. Alternatively, the power amplifier 12 may amplify signals in the 2.6 GHz frequency band but not in the 3.5 GHz frequency band. Alternatively, the power amplifier 12 may amplify signals in both the 2.6 GHz and 3.5 GHz frequency bands. In specific configurations, the amplification frequency band of the power amplifier 12 may be appropriately set based on actual conditions.

[0087] In addition, the power amplifier 12 can amplify both uplink and downlink signals, or both uplink and downlink signals. Furthermore, the filter can be configured independently. Alternatively, the filter can be integrated with the radiating element 13, or integrated within the power amplifier 12.

[0088] In a specific configuration, the radiator in the radiating component 13 can be an end-fire array antenna. The end-fire array antenna has good directivity and can therefore be well applied in narrow and long spaces such as tunnels.

[0089] like Figure 11 As shown in FIG, a simplified structural diagram of an end-fire array antenna is shown. Figure 11 In the end-fire array antenna, one end (such as Figure 11 The left end of the figure has an interface 130. Figure 9 The interface 130 can be used to connect to one end of the second cable segment 11b. Alternatively, it can be understood that the interface 130 is configured in the end-fire array antenna provided by the present invention to facilitate the connection between the end-fire array antenna and the second cable segment 11b and ensure reliability.

[0090] In addition, if Figure 12 As shown, the embodiment of the present invention also shows the directional pattern of the end-fire array antenna. Figure 12 The darker the color, the stronger the signal. Figure 12 It can be clearly seen in the figure that the maximum radiation direction of the end-fire array antenna is toward the right. In other words, the end-fire array antenna has good directivity, which is beneficial for application in narrow and long spaces such as tunnels.

[0091] In addition, in the above examples, the antenna system 20 includes one leaky cable assembly 10 as an example for illustrative description. In other examples, the antenna system 20 may also include two or more leaky cable assemblies 10 .

[0092] For example, Figure 13 As shown, in one example provided by the present invention, antenna system 20 includes two leaky cable assemblies, namely leaky cable assembly 10a and leaky cable assembly 10b. Both leaky cable assemblies are connected to the power divider 24 in the communication system 21 for feeding. The leaky cables in the two leaky cable assemblies extend in opposite directions, thereby effectively improving the coverage range of the wireless signal.

[0093] Specifically, in the leaky cable assembly 10a, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1a segment, and the radiation assembly 13 can provide effective signal coverage for the S2a segment.

[0094] In the leaky cable assembly 10b, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1b segment, and the radiation assembly 13 can provide effective signal coverage for the S2b segment.

[0095] Or, as Figure 14 As shown, in another example provided by the present invention, the antenna system 20 may further include four leaky cable assemblies, namely a leaky cable assembly 10a, a leaky cable assembly 10b, a leaky cable assembly 10c and a leaky cable assembly 10d.

[0096] Specifically, in the leaky cable assembly 10a, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1a segment, and the radiation assembly 13 can provide effective signal coverage for the S2a segment.

[0097] In the leaky cable assembly 10b, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1b segment, and the radiation assembly 13 can provide effective signal coverage for the S2b segment.

[0098] In the leaky cable assembly 10c, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1c segment, and the radiating assembly 13 can provide effective signal coverage for the S2c segment.

[0099] In the leaky cable assembly 10d, the first cable section 11a and the second cable section 11b can provide effective signal coverage for the S1d segment, and the radiation component 13 can provide effective signal coverage for the S2d segment.

[0100] In addition, it should be noted that Figure 14 The two communication systems 21 shown may include a radio remote unit 212, a multi-system access platform 213, a second circuit 214, and a power supply 22. The baseband processing unit 211 may also be deployed remotely, and the baseband processing unit 211 may be connected to the radio remote units 212 in the two communication systems 21 via optical fibers or other cables capable of transmitting communication signals.

[0101] It should be understood that the above description is merely an example of an antenna system 20 including four leaky cable assemblies. In other examples, the antenna system 20 may include more leaky cable assemblies. The number and location of the leaky cable assemblies can be appropriately configured based on actual needs, and detailed description is omitted here.

[0102] In addition, if Figure 15As shown, an embodiment of the present invention further provides a base station, including a base station antenna 01 and an antenna system. The base station antenna 01 is connected to the communication system 21 in the antenna system. In the base station provided by the present invention, the communication system 21 is used to send radio frequency signals to the leaky cable assembly 10 and the base station antenna 01 or to receive wireless signals received by the leaky cable assembly 10 and the base station antenna 01. That is, the base station antenna 01 can effectively cover the signal space outside the tunnel T, and the leaky cable assembly 10 can effectively cover the signal space inside the tunnel T. By being equipped with the above-mentioned antenna system and the base station antenna 01, the base station can effectively cover the signal of hollow environments such as the tunnel T and the external environment, and has good signal receiving and transmitting performance. Among them, the leaky cable assembly 10 is not limited to Figure 15 The structural type shown can also be any of the above types, which will not be described in detail here.

[0103] In the various embodiments of the present invention, unless otherwise specified or provided for, the terms and / or descriptions of the different embodiments are consistent and may be referenced to each other. The technical features of the different embodiments may be combined to form new embodiments based on their inherent logical relationships.

[0104] In this utility model, "plurality" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. A and B can be singular or plural.

[0105] It should be understood that the various numbers used in the embodiments of the present invention are merely for ease of description and are not intended to limit the scope of the embodiments of the present invention. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and internal logic.

Claims

1. A leaky cable assembly, characterized in that: Includes leaky cables and power amplifiers; The leaky cable includes a first cable segment and a second cable segment, the power amplifier is connected between the first cable segment and the second cable segment, and the power amplifier is used to amplify the signal transmitted between the first cable segment and the second cable segment; The first section of the cable comprises a first inner conductor, a first insulator, and a first outer conductor arranged in sequence from inside to outside, wherein the first outer conductor has a first radiating slot extending through the thickness thereof; The second cable section includes a second inner conductor, a second insulator, and a second outer conductor arranged in sequence from inside to outside, and the second outer conductor has a second radiating slot extending through the thickness thereof; The end of the first cable section away from the power amplifier is used to connect to a communication system, and the first inner conductor or the second outer conductor is connected to the power supply of the power amplifier.

2. The leaky cable assembly according to claim 1, characterized in that: The power amplifier includes a power amplification circuit and a power supply circuit; The two ends of the power amplifier circuit are respectively connected to the first cable section and the second cable section for signal connection, one end of the power supply circuit is connected to the first inner conductor or the first outer conductor, and the other end of the power supply circuit is connected to the power amplifier circuit for supplying power to the power amplifier circuit.

3. The leaky cable assembly according to claim 2, characterized in that: The leaky cable assembly further includes a first circuit, one end of which is connected to the first section of cable, and the other end of which is connected to the power amplifier circuit and the power supply circuit; The first circuit is used to realize the signal connection between the first section of the cable and the power amplifier circuit, and is also used to realize the power supply connection between the power supply circuit and the first section of the cable.

4. The leaky cable assembly according to claim 3, characterized in that: The first circuit is a bias device.

5. The leaky cable assembly according to claim 3 or 4, characterized in that: The first circuit is integrated into the power amplifier, or the first circuit is independent of the power amplifier.

6. The leaky cable assembly according to any one of claims 3 to 5, characterized in that: The power amplifier includes a first pair of connectors and a second pair of connectors; When the first circuit is integrated into the power amplifier, the first pair of connectors are connected to the first section of the cable by plugging or welding, and the second pair of connectors are connected to the second section of the cable by plugging or welding; When the first circuit is independent of the power amplifier, the first pair of connectors is connected to the first circuit by plugging or welding, and the second pair of connectors is connected to the second section of cable by plugging or welding.

7. The leaky cable assembly according to any one of claims 1 to 6, characterized in that: The leaky cable assembly further includes a protective cover, which covers the connection between the power amplifier and the first and second cable sections.

8. The leaky cable assembly according to any one of claims 1 to 7, characterized in that: The leaky cable assembly further includes a radiation component connected to an end of the second cable section away from the power amplifier, and a maximum radiation direction of the radiation component faces away from the power amplifier.

9. The leaky cable assembly according to claim 8, characterized in that: The radiation component includes one or more radiators; When the radiation component includes a plurality of radiators, the operating frequency bands of the plurality of radiators are the same or different.

10. The leaky cable assembly according to claim 9, characterized in that: The radiation component includes a plurality of radiators, and the operating frequency bands of the plurality of radiators are different; The leaky cable assembly further includes a plurality of filters, and each of the radiators is connected to the power amplifier signal through the corresponding filter.

11. The leaky cable assembly according to claim 10, characterized in that: The power amplifier is used to amplify the signal in at least one of the filters.

12. The leaky cable assembly according to claim 10 or 11, characterized in that: The multiple filters are integrated into the power amplifier, or the multiple filters are integrated with the radiation component, or the multiple filters are independent of the power amplifier and the radiation component.

13. An antenna system, characterized in that: The device comprises a communication system, a power supply, and at least one leaky cable assembly according to any one of claims 1 to 12, wherein the power supply is connected to an end of the first cable section away from the power amplifier; The first inner conductor of the first cable section is connected to the power amplifier and the power supply for power supply, or the first outer conductor of the first cable section is connected to the power amplifier and the power supply for power supply.

14. The antenna system according to claim 13, wherein: The antenna system further includes a second circuit, one end of the second circuit being connected to the first cable segment, and the other end of the second circuit being connected to the communication system and the power supply; The second circuit is used to realize the signal connection between the first section of the cable and the communication system, and is also used to realize the power supply connection between the power supply and the first section of the cable.

15. The antenna system according to claim 14, wherein: The second circuit is a biasing device.

16. The antenna system according to claim 14 or 15, characterized in that The communication system includes a radio remote unit and a multi-system access platform, and the radio remote unit is connected to the first cable section through the multi-system access platform.

17. The antenna system according to claim 16, wherein: The second circuit is integrated with the multi-system access platform, or the second circuit is independent of the multi-system access platform.

18. The antenna system according to claim 17, wherein: The antenna system further includes a baseband processing unit, which is signal-connected to the radio remote unit.

19. A base station, characterized in that: Comprising the antenna system according to any one of claims 13 to 18.

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