Active smart antenna

Abstract

The application provides an active smart antenna, wherein a LAN amplification unit is in a distributed integrated structure; compared with a structure design of a distributed LAN amplification unit, the distributed integrated LAN amplification unit has simple wiring, good reliability, low cost, greatly shortened length of a radio frequency coaxial cable, reduced radio frequency loss, simple wiring, strong manufacturability, and low radio frequency heat loss, and does not need special heat dissipation devices, thereby facilitating product miniaturization and weight reduction of the active smart antenna; that is, the structure design of the distributed integrated LAN amplification unit in the application considers performance, reliability, manufacturability and cost of the active smart antenna.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, in particular to an active intelligent antenna. BACKGROUND

[0002] In the construction of 5G mobile communication network in China, for non-core network and wide coverage scenarios (which have not very high requirements for data traffic), operators mainly choose to use 8T / 8R intelligent antennas for wireless coverage according to investment and product cost performance and other comprehensive factors. Figure 1 The structure diagram of the 8T / 8R passive intelligent antenna is shown in FIG. 1, wherein the antenna array unit 15 is in the form of 5×4, that is, there are 4 columns in total, each column has 5 radiation units, the radiation units are dual-polarized dipoles, there are 40 radio frequency channels in total, the phase shift feeding network unit 12 has 8 phase shifters in total, each phase shifter has 5 outputs, which are respectively connected with one polarized dipole in the 5 radiation units of one column, and the phase shift feeding network unit 12 is also connected with the network calibration unit 11. In the scheme of the 8T / 8R passive intelligent antenna, there is an uplink and downlink imbalance problem. In order to solve the uplink and downlink imbalance problem of 3.5G high frequency wireless network coverage, expand the uplink coverage range and improve the uplink data transmission performance, it is a better technical scheme to select an 8T / 8R active intelligent antenna with built-in uplink amplification function. Figure 2 The structure diagram of the 8T / 8R active intelligent antenna is shown in FIG. 2, which is connected with a LAN amplification unit between the phase shift feeding network unit 12 and the antenna array unit 15. When working: the synchronization module unit 13 receives the coupled radio frequency signals from the radio frequency channels of the phase shift feeding network unit 12, extracts the synchronization control signals (emitted by the base station system) contained therein through signal processing, the synchronization control signals control the uplink and downlink radio frequency channel switching of the LAN amplification unit, the uplink signals from the antenna array unit 15 are amplified during the uplink working period, and the downlink signals from the base station (i.e. the radio frequency remote unit) are directly transmitted to the antenna array unit 15 during the downlink working period; the network management control unit 16 supplies power to the synchronization module unit 13, and at the same time supplies power and communicates with the LAN amplification unit in the form of OOK signal, so as to realize the management and control of the LAN amplification unit; the RS-485 interface is used to communicate with the base station network management, so as to realize the supervision and control of the active intelligent antenna by the base station network management.

[0003] In the above-mentioned scheme of the active intelligent antenna, the LAN amplification unit is the core component, and the structure form and structure design in the active intelligent antenna are the key points. The existing structure design of the LAN amplification unit in the active intelligent antenna includes the following two ways: one is a distributed structure design, such as Figure 3As shown, one LAN amplification unit is connected between one polarized oscillator in each radiating unit in the antenna array unit 15 and the phase shift feeding network unit 12, and there are 40 LAN amplification units in total, and the advantage of this scheme is low radio frequency heat loss, but the power supply and control of each LAN amplification unit are complex, the lightning protection and reliability performance are poor, and the product cost is extremely high; another is an integrated structure design, as shown Figure 4 As shown, two metal cavities are adopted, and 20-way LAN amplification units are integrated in each cavity, and the advantage is that the power supply and control connection of the LAN amplification unit is simple, but in order to ensure that each signal is in phase, the radio frequency coaxial cable between the LAN amplification unit and the radiating unit needs to be equal in length, and the radio frequency coaxial cable needs to be fixed in length with the farthest radiating unit, therefore, the radio frequency loss is large, the radio frequency coaxial cable wiring is complex, and the product manufacturability is poor; at the same time, 20-way LAN amplification units are integrated in the cavity, and because the radio frequency loss generates high heat, a heat dissipation device needs to be arranged, and the volume and weight increase a lot.

[0004] Therefore, how to design the structure of the LAN amplification unit in the active intelligent antenna so as to balance the performance, reliability, manufacturability and cost of the active intelligent antenna has become a technical problem to be solved at present. SUMMARY

[0005] Therefore, how to design the structure of the LAN amplification unit in the active intelligent antenna so as to balance the performance, reliability, manufacturability and cost of the active intelligent antenna has become a technical problem to be solved at present.

[0006] In a first aspect, the present application provides an active intelligent antenna, comprising: a calibration network unit, a phase shift feeding network unit, a synchronization module unit, a distributed integrated LAN amplification unit and an antenna array unit;

[0007] The calibration network unit is connected with a radio frequency remote unit, used for receiving a radio frequency signal transmitted by the radio frequency remote unit, performing coupling calibration processing on the radio frequency signal, obtaining a calibrated radio frequency signal, returning the calibrated radio frequency signal to the radio frequency remote unit through a calibration port, and sending the radio frequency signal transmitted by the radio frequency remote unit to the phase shift feeding network unit;

[0008] The phase shift feeding network unit is connected with the calibration network unit, used for receiving the radio frequency signal sent by the calibration network unit, and performing coupling processing on the radio frequency signal to obtain a coupled radio frequency signal;

[0009] The synchronization module unit is connected with the phase shift feeding network unit, used for receiving the coupled radio frequency signal sent by the phase shift feeding network unit, and performing signal processing on the coupled radio frequency signal to obtain a synchronization control signal;

[0010] The distribution integrated LAN amplification unit is connected with the synchronization module unit, and is used for controlling a high-speed TDD switch inside to switch uplink radio frequency channels and downlink radio frequency channels according to the synchronization control signal, wherein when the high-speed TDD switch switches to the uplink radio frequency channel, uplink radio frequency signals synthesized by radiating elements in the antenna array unit enter a LAN low noise amplifier, so that the LAN low noise amplifier amplifies the uplink radio frequency signals synthesized by the radiating elements to obtain amplified uplink radio frequency signals, and then the amplified uplink radio frequency signals are sequentially transmitted to the radio frequency remote unit through the phase shift feed network unit and the calibration network unit.

[0011] Further, the number of the distribution integrated LAN amplification units is 5, each of the distribution integrated LAN amplification units is a metal cavity, 8 LAN amplification units are integrated in each of the metal cavities, and each of the LAN amplification units in each of the metal cavities is connected with a polarized oscillator of a same row of radiating elements in the antenna array unit, wherein the radiating elements in the antenna array unit are arranged in a 5*4 form, and each of the radiating elements is a dual-polarized oscillator.

[0012] Further, the network management control unit is further provided.

[0013] The network management control unit comprises one synchronization module unit power supply interface, one distribution integrated LAN amplification unit power supply / communication interface, one base station interface and one external device interface.

[0014] Further, the synchronization module unit comprises one power supply interface and five synchronization signal output interfaces; each of the distribution integrated LAN amplification units comprises one synchronization signal input interface, two power supply / communication interfaces and 16 radio frequency input / output interfaces.

[0015] One of the power supply interfaces is connected with one of the synchronization module unit power supply interfaces, the five synchronization signal output interfaces are connected with the synchronization signal input interfaces of the five distribution integrated LAN amplification units respectively, the five distribution integrated LAN amplification units are cascaded through the power supply / communication interfaces, the remaining one of the power supply / communication interfaces of the last distribution integrated LAN amplification unit in the five cascaded distribution integrated LAN amplification units is connected with one of the distribution integrated LAN amplification unit power supply / communication interfaces, and in the 16 radio frequency input / output interfaces, eight radio frequency input / output interfaces are connected with the radiating elements in the same row of the antenna array unit, and the other eight radio frequency input / output interfaces are connected with the phase shift feed network unit.

[0016] Further, the antenna array unit is fixedly arranged on the front surface of the antenna reflecting plate, the calibration network unit, the phase-shifted feed network unit, the synchronization module unit, the distributed integrated LAN amplification unit and the network management control unit are fixedly arranged on the back surface of the antenna reflecting plate, and the synchronization module unit and the network management control unit are metal cavities.

[0017] Further, the distributed integrated LAN amplification unit is externally integrated with a heat sink, the LAN amplification unit in the metal cavity of the distributed integrated LAN amplification unit is a PCB, and the grounding surface of the PCB is tightly connected with the inner cavity bottom surface of the metal cavity of the distributed integrated LAN amplification unit through the application of heat-conductive silicone grease.

[0018] Further, the sealing cover further comprises:

[0019] The sealing cover comprises an upper end cover made of metal, a lower end cover made of carbon steel and an antenna cover made of glass steel, the upper end cover and the lower end cover are inserted into the two ends of the antenna cover to form the sealing cover.

[0020] The antenna reflecting plate, the calibration network unit, the phase-shifted feed network unit, the synchronization module unit, the distributed integrated LAN amplification unit, the antenna array unit and the network management control unit are arranged in the sealing cover, and the two ends of the antenna reflecting plate are fixedly connected with the upper end cover and the lower end cover respectively.

[0021] Further, the upper end cover is externally provided with a heat sink in a preset angle oblique line direction.

[0022] Further, the side of the upper end cover fixedly connected with the antenna reflecting plate is coated with heat-conductive silicone grease.

[0023] Further, the positions of the upper end cover and the lower end cover inserted into the antenna cover are coated with sealing waterproof glue.

[0024] In the embodiment of the present application, an active intelligent antenna is provided, comprising a calibration network unit, a phase shift feeding network unit, a synchronization module unit, a distributed integrated LAN amplification unit and an antenna array unit; the calibration network unit is connected with a radio frequency remote unit, used for receiving a radio frequency signal transmitted by the radio frequency remote unit, performing coupling calibration processing on the radio frequency signal, obtaining a calibrated radio frequency signal and returning the calibrated radio frequency signal to the radio frequency remote unit through a calibration port, and sending the radio frequency signal transmitted by the radio frequency remote unit to the phase shift feeding network unit; the phase shift feeding network unit is connected with the calibration network unit, used for receiving the radio frequency signal sent by the calibration network unit and performing coupling processing on the radio frequency signal to obtain a coupled radio frequency signal; the synchronization module unit is connected with the phase shift feeding network unit, used for receiving the coupled radio frequency signal sent by the phase shift feeding network unit and performing signal processing on the coupled radio frequency signal to obtain a synchronization control signal; the distributed integrated LAN amplification unit is connected with the synchronization module unit, used for controlling a high-speed TDD switch inside the distributed integrated LAN amplification unit to switch an uplink radio frequency channel and a downlink radio frequency channel according to the synchronization control signal, wherein when the high-speed TDD switch switches to the uplink radio frequency channel, an uplink radio frequency signal synthesized by a radiating unit in the antenna array unit enters a LAN low-noise amplifier, so that the LAN low-noise amplifier amplifies the uplink radio frequency signal synthesized by the radiating unit to obtain an amplified uplink radio frequency signal, and then the amplified uplink radio frequency signal is sequentially transmitted to the radio frequency remote unit through the phase shift feeding network unit and the calibration network unit. As known from the above description, in the active intelligent antenna of the present application, the LAN amplification unit is of a distributed integrated structure. Compared with the structure design of the distributed LAN amplification unit, the distributed integrated LAN amplification unit has simple wiring, good reliability, low cost, greatly shortened length of radio frequency coaxial cable, reduced radio frequency loss, simple wiring, strong manufacturability, and low radio frequency heat loss, without the need for special heat dissipation device, facilitating product miniaturization and weight reduction of the active intelligent antenna. That is, the structure design of the distributed integrated LAN amplification unit in the present application takes into account the performance, reliability, manufacturability and cost of the active intelligent antenna, and alleviates the technical problem that the existing active intelligent antenna cannot take into account the performance, reliability, manufacturability and cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0026] Figure 1 The structure schematic diagram of the passive intelligent antenna provided in the embodiment of the present application;

[0027] Figure 2 Structure diagram of traditional active smart antenna provided by the embodiment of the present application;

[0028] Figure 3 Structure diagram of distributed LAN amplification unit provided by the embodiment of the present application;

[0029] Figure 4 Structure diagram of integrated LAN amplification unit provided by the embodiment of the present application;

[0030] Figure 5 Structure diagram of active smart antenna provided by the embodiment of the present application;

[0031] Figure 6 Structure diagram of distributed integrated LAN amplification unit provided by the embodiment of the present application;

[0032] Figure 7 Control connection diagram of active smart antenna provided by the embodiment of the present application;

[0033] Figure 8 Structure diagram of another active smart antenna provided by the embodiment of the present application;

[0034] Figure 9(a) is a front view diagram of the distributed integrated LAN amplification unit provided by the embodiment of the present application;

[0035] Figure 9(b) is a back view diagram of the distributed integrated LAN amplification unit provided by the embodiment of the present application;

[0036] Figure 10(a) is a front view diagram of the upper end cover provided by the embodiment of the present application;

[0037] Figure 10(b) is a back view diagram of the upper end cover provided by the embodiment of the present application.

[0038] Figure legend: 11 - calibration network unit; 12 - phase-shifted feed network unit; 13 - synchronization module unit; 14 - distributed integrated LAN amplification unit; 15 - antenna array unit; 16 - network management control unit; 17 - antenna reflector; 18 - heat sink; 19 - upper end cover; 20 - lower end cover; 21 - antenna cover. DETAILED DESCRIPTION

[0039] The technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] To make the present embodiment easy to be understood, first of all, a kind of active intelligent antenna disclosed by the embodiment of the application is introduced in detail.

[0041] Figure 5 It is the structure schematic diagram of a kind of active intelligent antenna according to the embodiment of the application, as shown in Figure 5 Calibration network unit 11, phase shift feed network unit 12, synchronization module unit 13, distributed integrated LAN amplification unit 14 and antenna array unit 15 are included in the active intelligent antenna;

[0042] Calibration network unit 11 is connected with radio frequency remote unit, for receiving the radio frequency signal transmitted by radio frequency remote unit, carries out coupling calibration processing to radio frequency signal, obtains the radio frequency signal after calibration and returns to radio frequency remote unit by calibration port, and sends the radio frequency signal transmitted by radio frequency remote unit to phase shift feed network unit 12;

[0043] Phase shift feed network unit 12 is connected with calibration network unit 11, for receiving the radio frequency signal sent by calibration network unit 11, and carries out coupling processing to radio frequency signal, obtains coupled radio frequency signal;

[0044] Synchronization module unit 13 is connected with phase shift feed network unit 12, for receiving the coupled radio frequency signal sent by phase shift feed network unit 12, and carries out signal processing to coupled radio frequency signal, obtains synchronization control signal;

[0045] Distributed integrated LAN amplification unit 14 is connected with synchronization module unit 13, for controlling the high-speed TDD switch in it according to synchronization control signal to switch uplink radio frequency channel and downlink radio frequency channel, wherein when high-speed TDD switch switches to uplink radio frequency channel, the uplink radio frequency signal synthesized in antenna array unit 15 radiating unit enters LAN low noise amplifier, so that LAN low noise amplifier amplifies the uplink radio frequency signal synthesized by radiating unit, obtains amplified uplink radio frequency signal, and then amplified uplink radio frequency signal is sequentially transmitted to radio frequency remote unit through phase shift feed network unit 12 and calibration network unit 11.

[0046] The active intelligent antenna of the embodiment of the application is introduced in detail as follows:

[0047] Figure 5 The structure schematic diagram of 8T / 8R (i.e. 8-way) active intelligent antenna is shown in Fig.

[0048] As shown in Fig. Figure 5As shown, the active intelligent antenna further comprises radio frequency ports (9 radio frequency ports for the 8T / 8R active intelligent antenna), which are respectively connected with the radio frequency remote units (specifically, 9 radio frequency output ports of the radio frequency remote units), and the working process thereof will be introduced as follows: the radio frequency signal transmitted by the radio frequency remote unit (i.e. RRU) is transmitted to the calibration network unit 11 (which is used for zero calibration of the loss and phase of the radio frequency signal, realizes wave velocity shaping, and can be a calibration board, and the calibration network unit 11 is not specifically limited in the embodiment of the present application) through the radio frequency ports, the calibration network unit 11 performs coupling calibration processing on the radio frequency signal, and the calibrated radio frequency signal is sent back to the radio frequency remote unit through the calibration port, and the radio frequency signal transmitted by the radio frequency remote unit is sent to the phase shift feeding network unit 12, specifically, the coupler of the phase shift feeding network unit 12, and then the coupler of the phase shift feeding network unit 12 performs coupling processing on the radio frequency signal to obtain a coupled radio frequency signal, and the coupler sends the coupled radio frequency signal to the synchronization module unit 13 (which can be specifically a TDD synchronization control unit), and then the synchronization module unit 13 performs signal processing (which specifically includes detection processing and signal processing) on the coupled radio frequency signal to obtain a synchronization control signal, and the synchronization control signal is sent to the distributed integrated LAN amplification unit 14 through the radio frequency coaxial cable, and each channel in the distributed integrated LAN amplification unit 14 has a high-speed TDD switch, which switches the uplink radio frequency channel and the downlink radio frequency channel under the control of the synchronization control signal.

[0049] When the high-speed TDD switch is switched to the downlink radio frequency channel (i.e. in the downlink transmission time slot), the radio frequency signal transmitted by the radio frequency remote unit is transmitted to each radiating element of the antenna array unit 15 through the calibration network unit 11, the phase shift feeding network unit 12 and the distributed integrated LAN amplification unit 14 (through the high-speed TDD switch) to form an antenna directional coverage.

[0050] When the high-speed TDD switch is switched to the uplink radio frequency channel (i.e. in the uplink receiving time slot), the high-speed TDD switch switches the uplink radio frequency signal synthesized by the radiating elements in the antenna array unit 15 to the LAN low noise amplifier, so that the LAN low noise amplifier amplifies the uplink radio frequency signal synthesized by the radiating elements to obtain an amplified uplink radio frequency signal, and then the amplified uplink radio frequency signal is transmitted to the radio frequency remote unit through the phase shift feeding network unit 12 and the calibration network unit 11 in turn.

[0051] It should be noted that the radio frequency signal is transmitted through the radio frequency coaxial cable.

[0052] In the embodiment of the present application, an active intelligent antenna is provided, comprising: a calibration network unit 11, a phase shift feeding network unit 12, a synchronization module unit 13, a distributed integrated LAN amplification unit 14 and an antenna array unit 15; the calibration network unit 11 is connected with a radio frequency remote unit, used for receiving a radio frequency signal transmitted by the radio frequency remote unit, performing coupling calibration processing on the radio frequency signal, obtaining a calibrated radio frequency signal and returning the calibrated radio frequency signal to the radio frequency remote unit through a calibration port, and sending the radio frequency signal transmitted by the radio frequency remote unit to the phase shift feeding network unit; the phase shift feeding network unit 12 is connected with the calibration network unit 11, used for receiving the radio frequency signal sent by the calibration network unit 11 and performing coupling processing on the radio frequency signal, obtaining a coupled radio frequency signal; the synchronization module unit 13 is connected with the phase shift feeding network unit 12, used for receiving the coupled radio frequency signal sent by the phase shift feeding network unit 12 and performing signal processing on the coupled radio frequency signal, obtaining a synchronization control signal; the distributed integrated LAN amplification unit 14 is connected with the synchronization module unit 13, used for controlling a high-speed TDD switch inside the distributed integrated LAN amplification unit 14 to switch an uplink radio frequency channel and a downlink radio frequency channel according to the synchronization control signal, wherein when the high-speed TDD switch switches to the uplink radio frequency channel, an uplink radio frequency signal synthesized by a radiating unit in the antenna array unit 15 enters a LAN low-noise amplifier, so that the LAN low-noise amplifier amplifies the uplink radio frequency signal synthesized by the radiating unit, obtains an amplified uplink radio frequency signal, and then sequentially transmits the amplified uplink radio frequency signal to the radio frequency remote unit through the phase shift feeding network unit 12 and the calibration network unit 11. As can be seen from the above description, in the active intelligent antenna of the present application, the LAN amplification unit is of a distributed integrated structure. Compared with the structure design of the distributed LAN amplification unit, the distributed integrated LAN amplification unit 14 has simple wiring, good reliability, low cost, greatly shortened length of the radio frequency coaxial cable, reduced radio frequency loss, simple wiring, strong manufacturability, and low radio frequency heat loss, without the need for special heat dissipation devices, facilitating product miniaturization and weight reduction of the active intelligent antenna. That is, the structure design of the distributed integrated LAN amplification unit 14 in the present application takes into account the performance, reliability, manufacturability and cost of the active intelligent antenna, thereby alleviating the technical problem that the existing active intelligent antenna cannot take into account the performance, reliability, manufacturability and cost.

[0053] The above describes the structure of the active intelligent antenna of the present application briefly, and the specific contents involved therein are described in detail below.

[0054] The specific structure of the distributed integrated LAN amplification unit 14 is described first below.

[0055] In an optional embodiment of the present application, with reference to Figure 6The number of the distributed integrated LAN amplification units 14 is 5, each of the distributed integrated LAN amplification units 14 is a metal cavity, and 8-way LAN amplification units are integrated in each metal cavity, and each of the 8-way LAN amplification units in each metal cavity is connected with a polarized oscillator of a same row of radiating units in the antenna array unit 15, wherein the radiating units in the antenna array unit 15 are arranged in a 5*4 form, and each of the radiating units is a dual-polarized oscillator.

[0056] Specifically, the number of the distributed integrated LAN amplification units 14 is 5, each of the distributed integrated LAN amplification units 14 is a metal cavity, and 8-way LAN amplification units are integrated in each metal cavity, and each of the 8-way LAN amplification units in each metal cavity is connected with a polarized oscillator of a same row of radiating units, which greatly shortens the length of the radio frequency coaxial cable, reduces the radio frequency loss, is simple and convenient to wire, and has strong product manufacturability; meanwhile, the cavity radio frequency heat loss has a low temperature rise, and a special heat dissipation device is not needed, which is convenient for realizing product miniaturization and weight reduction; power supply and communication are in an OOK signal mode, and a cascaded structure mode is used to supply power and communicate for each of the distributed integrated LAN amplification units 14.

[0057] In an optional embodiment of the present application, referring to Figure 7 The active intelligent antenna further comprises a network management control unit 16.

[0058] The network management control unit 16 comprises a power supply interface of a synchronization module unit 13, a power supply / communication interface of a distributed integrated LAN amplification unit 14, a base station interface and an external device interface.

[0059] The synchronization module unit 13 comprises a power supply interface and five synchronization signal output interfaces; each of the distributed integrated LAN amplification units 14 comprises a synchronization signal input interface, two power supply / communication interfaces and sixteen radio frequency input / output interfaces.

[0060] The power supply interface is connected with the power supply interface of the synchronization module unit 13, the five synchronization signal output interfaces are connected with the synchronization signal input interfaces of each of the five distributed integrated LAN amplification units 14, the five distributed integrated LAN amplification units 14 are cascaded through the power supply / communication interfaces, the remaining one of the power supply / communication interfaces of the last one of the five cascaded distributed integrated LAN amplification units 14 is connected with the power supply / communication interface of the distributed integrated LAN amplification unit 14, and among the sixteen radio frequency input / output interfaces, eight radio frequency input / output interfaces are connected with the same row of radiating units in the antenna array unit 15, and the other eight radio frequency input / output interfaces are connected with the phase shift feed network unit 12.

[0061] Specifically, the 6 interfaces of the synchronization module unit 13 are connected by SMA plug-in seat (in order to meet the requirements of outdoor lightning protection), each distributed integrated LAN amplification unit 14 includes 19 interfaces, the 16 interfaces in parallel are radio frequency input and output interfaces, which are SMA radio frequency sockets, the left one is a synchronization signal input interface, which is a SMA radio frequency socket, the right two interfaces are power supply / communication interfaces, which are SMA radio frequency sockets, the power supply and communication adopt OOK modulation signal transmission mode, the two power supply / communication interfaces are cascaded structures, in order to ensure the lightning protection performance of signal transmission, SMA radio frequency coaxial cables with shielding performance are used to connect each distributed integrated LAN amplification unit 14; the network management control unit 16 includes 4 interfaces, the upper two are SMA radio frequency sockets, one is a power supply interface for the synchronization module unit 13, and the other is a power supply / communication interface for the distributed integrated LAN amplification unit 14, the power supply / communication interface of the distributed integrated LAN amplification unit 14 is connected with the remaining one power supply / communication interface of the last distributed integrated LAN amplification unit 14 in the cascaded distributed integrated LAN amplification units 14 through a radio frequency coaxial cable, so as to supply power and realize real-time communication for the distributed integrated LAN amplification unit 14 in the OOK communication mode; the network management control unit 16 has one AISG plug and one AISG socket below, one of which can be connected with the AISG interface of the radio frequency remote unit through an AISG cable, so as to realize the management and control of the active intelligent antenna by the background network management center of the radio frequency remote unit, and the other can be used for external connection of other AISG interface equipment.

[0062] Specifically, the input end of the network management control unit 16 (which internally includes a CPU) is connected with the power port of the radio frequency remote unit, on the one hand, the network management control unit 16 is used to convert the power output by the power port of the radio frequency remote unit into target power, and then supply power to the synchronization module unit 13 and the distributed integrated LAN amplification unit 14 through the target power; on the other hand, the network management control unit 16 is used to adjust the gain of the LAN low-noise amplifier and monitor the working condition of the distributed integrated LAN amplification unit 14. For example, the background network management center sends a gain from 8DB to 12DB to the network management control unit 16 through the radio frequency remote unit, the network management control unit 16 sends the adjustment gain instruction to the distributed integrated LAN amplification unit 14, the PCB board of the distributed integrated LAN amplification unit 14 adjusts the gain of the LAN low-noise amplifier from 8DB to 12DB according to the above instruction, after the adjustment is completed, the PCB board obtains the adjusted information, and then feeds back to the background network management center through the network management control unit 16 and the radio frequency remote unit in turn.

[0063] In an optional embodiment of the present application, reference is made to Figure 8The active intelligent antenna further comprises: an antenna reflecting plate 17 made of metal, the antenna array unit 15 is fixedly arranged on the front surface of the antenna reflecting plate 17, the calibration network unit 11, the phase shift feeding network unit 12, the synchronization module unit 13, the distributed integrated LAN amplification unit 14 and the network management control unit 16 are fixedly arranged on the back surface of the antenna reflecting plate 17, wherein the synchronization module unit 13 and the network management control unit 16 are metal cavities.

[0064] Specifically, the antenna reflecting plate 17 made of metal can be an aluminum alloy plate with a thickness of 2mm, for example. Figure 8 The antenna array unit 15 is fixedly arranged on the front surface of the antenna reflecting plate 17, the calibration network unit 11, the phase shift feeding network unit 12, the synchronization module unit 13, the distributed integrated LAN amplification unit 14 and the network management control unit 16 are fixedly arranged on the back surface of the antenna reflecting plate 17, the synchronization module unit 13 and the network management control unit 16 can be aluminum alloy sealed cavities, and the distributed integrated LAN amplification unit 14 is tightly connected with the antenna reflecting plate 17 through a screw fastener.

[0065] In an optional embodiment of the present application, referring to FIGS. 9(a) and 9(b), the distributed integrated LAN amplification unit 14 is externally integrated with a heat sink 18, the LAN amplification unit in the metal cavity of the distributed integrated LAN amplification unit 14 is a PCB board, and the grounding surface of the PCB board is tightly connected with the bottom surface of the inner cavity of the metal cavity of the distributed integrated LAN amplification unit 14 through a heat-conducting silicone grease.

[0066] In an optional embodiment of the present application, referring to Figure 8 The active intelligent antenna further comprises: a sealed cover body;

[0067] The sealed cover body comprises: an upper end cover 19 made of metal, a lower end cover 20 made of carbon steel and an antenna cover 21 made of glass steel, the upper end cover 19 and the lower end cover 20 are inserted into the two ends of the antenna cover 21 to form the sealed cover body.

[0068] The antenna reflecting plate 17, the calibration network unit 11, the phase shift feeding network unit 12, the synchronization module unit 13, the distributed integrated LAN amplification unit 14, the antenna array unit 15 and the network management control unit 16 are arranged in the sealed cover body, and the two ends of the antenna reflecting plate 17 are fixedly connected with the upper end cover 19 and the lower end cover 20 respectively; referring to FIGS. 10(a) and 10(b), the outer surface of the upper end cover 19 is externally provided with a heat sink 18 with a preset angle and a slant direction; the side of the upper end cover 19 fixedly connected with the antenna reflecting plate 17 is coated with heat-conducting silicone grease; and the positions of the upper end cover 19 and the lower end cover 20 inserted into the antenna cover 21 are coated with sealing waterproof glue.

[0069] Specifically, the LAN amplification unit in the metal cavity of the distributed integrated LAN amplification unit 14 is a PCB board, the ground plane of the PCB board is tightly connected with the inner cavity bottom surface of the metal cavity of the distributed integrated LAN amplification unit 14 by coating with heat-conducting silicone grease, so that the heat generated by the PCB board can be effectively conducted to the inner cavity bottom surface of the metal cavity of the distributed integrated LAN amplification unit 14, and then the heat is guaranteed to be evenly distributed in the metal cavity (which is an aluminum alloy die-cast cavity structure, and the surface is treated by oxidation and conduction) of the distributed integrated LAN amplification unit 14 through the external integrated heat sink 18 of the distributed integrated LAN amplification unit 14, and the distributed integrated LAN amplification unit 14 is tightly connected with the antenna reflector plate 17 through a screw fastener (the mounting surface of the support of the distributed integrated LAN amplification unit 14 has specific requirements on flatness and smoothness, and the distributed integrated LAN amplification unit 14 is connected with the antenna metal reflector plate through a screw fastener), so that the heat of the metal cavity of the distributed integrated LAN amplification unit 14 can be effectively conducted to the metal reflector plate.

[0070] In addition, the upper end cover 19 made of metal can be an upper end cover 19 made of die-cast aluminum alloy, and the upper end cover 19 is tightly connected with the antenna reflector plate 17 through a screw fastener, as shown in FIG. 10(a), the external integrated 90-degree diagonal heat sink 18 of the upper end cover 19 (to ensure that the top of the upper end cover 19 does not accumulate water) is in convection with external air, the mounting plane inside the upper end cover 19 connected with the antenna reflector plate 17 has requirements on flatness and smoothness, the upper end cover 19 is provided with three round-head screw mounting holes, the mounting surface of the upper end cover 19 is coated with heat-conducting silicone grease, and the upper end cover 19 is tightly connected with the antenna reflector plate 17 through a screw (the lower end cover 20 can also adopt the connection mode of the upper end cover 19), so that the internal heat of the active intelligent antenna is discharged; to support the installation of an external active intelligent antenna parameter measurement module, four screw mounting holes are arranged at the edge of the upper end cover 19, and the parameter module support is reliably connected with the upper end cover 19 of the active intelligent antenna through a screw; the material of the lower end cover 20 can be QM235 carbon steel, which is powder sprayed after chemical treatment, and meets the outdoor corrosion resistance requirements; as shown in FIG. 10(b), the material of the radome 21 can be glass steel, the contact part between the radome 21 and the upper and lower end covers is coated with sealing silicone, and the top of the screw of the upper and lower end covers is coated with sealing waterproof glue, so as to guarantee the outdoor waterproof performance of the antenna. Figure 8 , the material of the radome 21 can be glass steel, the contact part between the radome 21 and the upper and lower end covers is coated with sealing silicone, and the top of the screw of the upper and lower end covers is coated with sealing waterproof glue, so as to guarantee the outdoor waterproof performance of the antenna. Figure 8 Further comprising: an N-type radio frequency connector connected with a radio frequency remote unit (i.e., a base station) through a radio frequency coaxial cable.

[0071] The computer program product of the active intelligent antenna provided in the embodiment of the application includes a computer readable storage medium storing program codes, the program codes include instructions for executing the method described in the foregoing method embodiment, and specific implementation can be referred to the method embodiment, which will not be described here again.

[0072] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system and device described above can refer to the corresponding process in the foregoing method embodiments, which will not be repeated here.

[0073] In addition, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or the part of the present application which essentially contributes to the prior art or the part of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and various program code storage media.

[0075] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0076] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An active smart antenna, characterized by The application relates to a radio frequency (RF) remote unit and a network management unit, and relates to a radio frequency (RF) remote unit and a network management unit. The calibration network unit is connected with the radio frequency remote unit, is used for receiving a radio frequency signal transmitted by the radio frequency remote unit, carries out coupling calibration processing on the radio frequency signal, obtains a calibrated radio frequency signal, and returns the calibrated radio frequency signal to the radio frequency remote unit through a calibration port, and transmits the radio frequency signal transmitted by the radio frequency remote unit to the phase-shifted feed network unit. The phase-shifted feed network unit is connected with the calibration network unit, is used for receiving the radio frequency signal transmitted by the calibration network unit, and carries out coupling processing on the radio frequency signal to obtain a coupled radio frequency signal. The synchronization module unit is connected with the phase-shifted feed network unit, is used for receiving the coupled radio frequency signal transmitted by the phase-shifted feed network unit, and carries out signal processing on the coupled radio frequency signal to obtain a synchronization control signal. The distribution integrated LAN amplification unit is connected with the synchronization module unit, is used for controlling a high-speed TDD switch in the distribution integrated LAN amplification unit to switch uplink radio frequency channels and downlink radio frequency channels according to the synchronization control signal, wherein when the high-speed TDD switch is switched to the uplink radio frequency channel, an uplink radio frequency signal synthesized by a radiating unit in the antenna array unit enters a LAN low-noise amplifier, so that the LAN low-noise amplifier amplifies the uplink radio frequency signal synthesized by the radiating unit to obtain an amplified uplink radio frequency signal, and then the amplified uplink radio frequency signal is transmitted to the radio frequency remote unit through the phase-shifted feed network unit and the calibration network unit in sequence. The number of the distribution integrated LAN amplification units is five, each of the distribution integrated LAN amplification units is a metal cavity, eight LAN amplification units are integrated in each of the metal cavities, each of the LAN amplification units in each of the metal cavities is connected with a polarized vibrator of the same row of radiating units in the antenna array unit, the radiating units in the antenna array unit are arranged in a 5*4 form, and each of the radiating units is a dual-polarized vibrator. The six interfaces of the synchronization module unit adopt an SMA plug seat connection mode. The application further relates to a network management unit.

2. The active smart antenna of claim 1, wherein, The network management unit comprises one synchronization module unit power supply interface, one distribution integrated LAN amplification unit power supply / communication interface, one base station interface and one external device interface. The synchronization module unit comprises one power supply interface and five synchronization signal output interfaces; each of the distribution integrated LAN amplification units comprises one synchronization signal input interface, two power supply / communication interfaces and 16 radio frequency input / output interfaces. ​ 3. The active smart antenna of claim 2, wherein, ​ 1 power supply interface is connected with 1 power supply interface of the synchronization module unit, 5 synchronization signal output interfaces are connected with 5 synchronization signal input interfaces of each of the distributed integrated LAN amplification units, 5 distributed integrated LAN amplification units are cascaded through the power supply / communication interfaces, and the remaining 1 power supply / communication interface of the last distributed integrated LAN amplification unit of the 5 cascaded distributed integrated LAN amplification units is connected with 1 power supply / communication interface of the distributed integrated LAN amplification unit, and 8 of the 16 radio frequency input / output interfaces are connected with the same row of radiating elements in the antenna array unit, and the other 8 radio frequency input / output interfaces are connected with the phase shift feed network unit.

4. The active smart antenna of claim 2, wherein, Further comprising: The antenna array unit is fixedly arranged on the front surface of the antenna reflecting plate, and the calibration network unit, the phase shift feed network unit, the synchronization module unit, the distributed integrated LAN amplification unit and the network management control unit are fixedly arranged on the back surface of the antenna reflecting plate, wherein the synchronization module unit and the network management control unit are metal cavities.

5. The active intelligent antenna of claim 1, wherein, The distributed integrated LAN amplification unit is externally integrated with a cooling fin, the LAN amplification unit in the metal cavity of the distributed integrated LAN amplification unit is a PCB board, and the grounding surface of the PCB board is tightly connected with the inner cavity bottom surface of the metal cavity of the distributed integrated LAN amplification unit through the application of heat-conducting silicone grease.

6. The active smart antenna of claim 4, wherein, Further comprising: A sealed cover body; The sealed cover body comprises an upper end cover made of metal, a lower end cover made of carbon steel and a radome made of glass steel, the upper end cover and the lower end cover are inserted into both ends of the radome to form the sealed cover body; The antenna reflecting plate, the calibration network unit, the phase shift feed network unit, the synchronization module unit, the distributed integrated LAN amplification unit, the antenna array unit and the network management control unit are arranged in the sealed cover body, and both ends of the antenna reflecting plate are fixedly connected with the upper end cover and the lower end cover respectively.

7. The active smart antenna of claim 6, wherein, The upper end cover is externally provided with a cooling fin in a preset angle oblique line direction.

8. The active smart antenna of claim 6, wherein, The side of the upper end cover fixedly connected with the antenna reflecting plate is coated with heat-conducting silicone grease.

9. The active smart antenna of claim 6, wherein, The positions where the upper end cover and the lower end cover are inserted into the radome are coated with sealing waterproof glue.

Images