Feeding network, base station antenna and base station equipment

Abstract

A feed network, a base station antenna, and a base station device. The feed network includes a feed detection unit and a first feed point and a second feed point located on the same feed link. When the feed link is in a preset working state, the feed detection unit determines the standing wave ratio of the feed link based on a first electrical signal at the first feed point and a second electrical signal at the second feed point. If the standing wave ratio of the feed link does not match the standing wave ratio corresponding to the preset working state, the feed link connection is determined to be abnormal. By providing a feed detection unit in the feed network, not only can the cable connection inside the base station antenna be calibrated in advance before the base station antenna leaves the factory, but cable connection problems outside the base station antenna can also be further detected after connecting to external equipment, so as to facilitate the deployment or installation of base station equipment with correct cable connections, reducing the probability of base station equipment being returned to the factory for repair and users redeploying base station antennas.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a feeding network, a base station antenna, and a base station device. Background Art

[0002] With the advancement of multiple-input, multiple-output (MIMO) technology, the number of antennas installed in base station equipment has increased. This has led to an increase in the number of antenna ports and internal cables, which has increased the complexity of base station production and installation. If the internal cable connections of base station equipment are not inspected before deployment or installation, cable connection errors are likely to occur, increasing the probability of rework of base station equipment production and the cost of base station antenna installation for users.

[0003] There are some solutions for detecting the cable connection status of base station equipment in the prior art. Figure 1 The following is a flow chart showing a method for detecting cable connections. The method first connects one end of at least one cable to a receiver port (such as an antenna port) provided with a keyboard display circuit, and then uses a transmitter (such as an RF device) that sends a radio frequency signal to send a signal at the other end of the at least one cable. In this way, based on the sequence of signals received by each of the at least one cable automatically recorded by the receiver provided with a keyboard display circuit, it can be determined whether there is a cable with a connection problem in the at least one cable. Figure 2 A flow chart illustrating another method for detecting cable connections is shown as an example. In this method, the base station device first receives the signal sent by the terminal device through the smart antenna, and then calculates the assignment weight and the phase angle vector in sequence based on the signal received by each antenna of the smart antenna. The phase angle corresponding to each antenna is analyzed according to the phase angle vector. When it is determined that the phase angles corresponding to each antenna form an arithmetic progression, it is determined that the cables in the base station device are connected normally. Otherwise, it is determined that there are cables with connection problems in the base station device.

[0004] However, the base station equipment is actually composed of a base station antenna and some other components, such as RF components and baseband components. The antenna port of the base station antenna is connected to one RF communication port of the RF component, and the other RF communication port of the RF component is connected to the baseband component. In this case, Figure 1 The detection method shown can actually only detect the cable connection between the antenna port of the base station antenna and the RF device. Figure 2 The detection methods shown can only detect the cable connections between the baseband unit and each antenna port. Obviously, both detection methods can only detect the cable connections between the antenna port and other devices (such as RF devices or baseband devices), and cannot detect the cable connections within the base station antenna. Summary of the Invention

[0005] The present application provides a feeding network, a base station antenna, and a base station device for detecting cable connections inside the base station antenna.

[0006] In the first aspect, the present application provides a feeding network, comprising a first feeding point, a second feeding point and a feeding detection unit, wherein the first feeding point and the second feeding point are located in the same feeding link, the first feeding point is connected to the first end of the feeding detection unit, and the second feeding point is connected to the second end of the feeding detection unit. The feeding detection unit can obtain a first electrical signal at the first feeding point and a second electrical signal at the second feeding point when the feeding link is in a preset working state, and calculate the standing wave ratio of the feeding link based on the first electrical signal and the second electrical signal. If it is determined that the standing wave ratio of the feeding link does not match the standing wave ratio corresponding to the preset working state, it can be determined that the feeding link connection is abnormal. The preset working state can refer to a normal working state or an abnormal working state, the standing wave ratio corresponding to the normal working state is not less than a preset standing wave ratio threshold, and the standing wave ratio corresponding to the abnormal working state is less than the preset standing wave ratio threshold.

[0007] In the above design, by setting a feed detection unit in the feed network of the base station antenna and using the feed detection unit to detect the connection status of the feed link in the feed network (the internal cable between the antenna port of the base station antenna and the antenna array), the internal cable connection problem of the base station antenna can be accurately located, which is convenient for calibrating the internal cable connection of the base station antenna in advance before the base station antenna is shipped out of the factory, so as to ship the base station antenna with the internal cable connection correct. Furthermore, the feed detection unit can also be used to perform a secondary detection after the base station antenna is connected to the external equipment. Since it has been determined that the internal cable connection of the base station antenna is correct, if the secondary detection still detects a connection problem, it can be determined that there is a problem with the external cable connection of the base station antenna. It can be seen from this that this design can accurately locate the internal cable connection problem and the external cable connection problem of the base station antenna, which is convenient for calibrating the various cable connections in the base station equipment in advance before the base station equipment is deployed or installed, reducing the probability of the base station equipment being returned to the factory for repair and the user redeploying the base station antenna.

[0008] In one possible design, the first end of the feed detection unit corresponds to the first feed point, and the second end of the feed detection unit corresponds to the second feed point. In this case, the feed detection unit is also used to: before obtaining the first electrical signal at the first feed point and the second electrical signal at the second feed point, control the feed link to be in a preset working state, and, after determining the standing wave ratio of the feed link based on the first electrical signal and the second electrical signal, if it is determined that the standing wave ratio matches the standing wave ratio corresponding to the preset working state, it is determined that the feed link connection is normal, and after determining that the feed link connection is normal, the feed link is controlled to be in a normal working state. Through this design, the feed detection unit can not only be used to detect the connection status of the feed link, but also synchronously participate in the feed adjustment process of the feed link. Even when detection is not required, the feed detection unit can also be used to implement feed adjustment, which helps to maximize the utilization of resources in the feed network, while improving resource utilization and saving the deployment cost of base station antennas as much as possible.

[0009] In one possible design, the feed detection unit is specifically configured to detect abnormal connection issues within the feeder link itself and / or detect the line sequence of at least two feeder links. This allows the feed detection unit to not only locate connection issues caused by hardware or software errors within the feeder link itself, but also to locate mis-sequenced connections between multiple feeder links even when the hardware or software within the feeder link itself is not faulty, thereby improving the ability to detect various cable connection errors.

[0010] In one possible design, the abnormal working state may include an open circuit state, a mismatch state, or a short circuit state. By detecting abnormal working states caused by various reasons through the feed detection unit, abnormal connection problems in the feed link can be accurately located.

[0011] In the embodiment of the present application, there are many possible specific structures of the feeding detection unit. For example:

[0012] Structure 1

[0013] In structure one, the feed detection unit may include a first controller, a first transmission component, a first strip line, a second strip line and a third strip line. The first strip line connects the first feeding point, the second strip line connects the second feeding point, the first strip line and the second strip line do not contact, and the first transmission component connects the first controller and the third strip line respectively. In this design, when it is necessary to control the feed link to be in normal working state, the first controller can control the first transmission component to drive the third strip line to move to the first position. When the third strip line is in the first position, the third strip line contacts the first strip line and the second strip line respectively. In this way, the first feeding point and the second feeding point can be connected through the conductive first strip line, the third strip line and the second strip line to achieve the feeding link where the first feeding point and the second feeding point are located is in normal working state. Correspondingly, when it is necessary to control the feeder link to be in an abnormal operating state, the first controller can control the first transmission component to drive the third conductive strip line to move to the second position. When the third conductive strip line is in the second position, the third conductive strip line does not contact the first conductive strip line and / or does not contact the second conductive strip line. In this way, the feeder link where the first feeding point and the second feeding point are located is in an abnormal operating state. In this design, the feed detection unit can change the path and disconnection of the feeder link through mechanical transmission to change the operating state of the feeder link.

[0014] In structure 1, there are multiple ways to implement the first, second, and third conductive strip lines:

[0015] Implementation method 1: The first, second, and third strip lines can be implemented as microstrip lines. This design allows the three strip lines to be fixed in their respective positions without deformation or abnormal movement, even without a support member in the feed detection unit. This not only enables the feed detection unit to perform the feed detection function through these three strip lines, saving deployment space and cost, but also avoids plug-in connections by connecting the microstrip lines to other components, effectively reducing insertion loss.

[0016] In a second implementation method, the feed detection unit may further include a first cavity, wherein the first feeding point and the second feeding point are symmetrically arranged on the outside of two oppositely arranged side surfaces of the first cavity, and the first conductive strip line, the second conductive strip line, and the third conductive strip line are located within the first cavity. In this case, the first conductive strip line, the second conductive strip line, and the third conductive strip line can be configured as suspended strip lines or sheet metal strip lines. Through this design, the three conductive strip lines can not only be fixed in their respective corresponding positions through the first cavity, but can also be connected to other components by strip lines to avoid plug-in connections, thereby effectively reducing insertion loss.

[0017] In a possible design of the second implementation method, the feed detection unit may also include a first printed circuit board (PCB) and a second PCB that are arranged relative to each other, and a first slide. The first PCB is engaged in the first cavity, and the first slide is located on the surface of the first cavity relative to the first PCB, or on the surface of the first PCB relative to the second PCB, and the second PCB slides along the first slide. The first and second guide wires are located on the surface of the first PCB opposite to the second PCB, and the third guide wire is located on the surface of the second PCB opposite to the first PCB. In this case, the first controller can control the first transmission component to drive the second PCB to slide along the first slide, so as to drive the third guide wire on the second PCB to slide to the first position or the second position. In this design, by setting the first PCB to carry the first and second guide wires, and setting the second PCB to carry the third guide wire, not only can the three guide wires be effectively fixed, but the third guide wire can also be driven to move by the sliding of the second PCB to avoid wear caused by the transmission component directly driving the third guide wire to move.

[0018] In a possible design of structure one, the feeding network may include K first feeding points and K second feeding points respectively located on K feeding links, and the feeding detection unit may include K first conductive strip lines and K second conductive strip lines located on the first PCB, and M third conductive strip lines located on the second PCB, the K first conductive strip lines are respectively connected to the K first feeding points, and the K second conductive strip lines are respectively connected to the K second feeding points. In this case, the first controller may also first control the first transmission component to drive the second PCB to slide along the first slideway to ensure that L third conductive strip lines among the M third conductive strip lines are respectively in contact with L first conductive strip lines among the K first conductive strip lines and L second conductive strip lines among the K second conductive strip lines, so as to conduct the L feeding links corresponding to the L first conductive strip lines and L second conductive strip lines that are in contact with each other. The first controller calculates the first standing wave ratio of the L feeding links in this case. Afterwards, the first controller controls the first transmission component to drive the second PCB to slide along the first slideway to ensure that the L third conductive strips do not contact the L first conductive strips or the L second conductive strips, so as to disconnect the L feeder links. The first controller then calculates the second standing wave ratio of the L feeder links in this case. If the difference between the first standing wave ratio and the second standing wave ratio is not greater than the preset difference threshold, it means that the working state of the L feeder links has not changed with the control of the first controller, so the first controller can determine that the L feeder links are abnormally connected. Wherein, K and M are positive integers greater than or equal to 2, and L is a positive integer less than or equal to M. In the above design, standing wave detection is completed by combining the standing wave ratios of each feeder link under different working conditions. Not only can the connection abnormality of the feeder link itself be detected, but also the misaligned connection problem between each feeder link can be determined by cable sequence detection (CSD) of each feeder link, which helps to improve the accuracy of standing wave detection.

[0019] Structure 2

[0020] In structure 2, the feed detection unit may include a second controller, a second transmission component, a fourth conductive strip line and a conductor component, the fourth conductive strip line connects the first feeding point and the second feeding point, the conductor component is coupled to the ground circuit, and the second transmission component is connected to the second controller and the conductor component respectively. In this case, when it is necessary to control the feed link to be in a normal working state, the second controller can control the second transmission component to drive the conductor component to move to a third position. When the conductor component is in the third position, the conductor component does not contact the fourth conductive strip line. In this way, the fourth conductive strip line can conduct the first feeding point and the second feeding point, so that the feed link where the first feeding point and the second feeding point are located is in a normal working state. When it is necessary to control the feed link to be in an abnormal working state, the second controller can control the second transmission component to drive the conductor component to move to a fourth position. When the conductor component is in the fourth position, the conductor component contacts the fourth conductive strip line. In this way, the impedance on the fourth conductive strip line is affected by the conductor component, so that the feed link where the first feeding point and the second feeding point are located is in an impedance mismatch state. In this design, the feed detection unit can change the impedance on the feed link through mechanical transmission to change the working state of the feed link.

[0021] In structure 2, the third and fourth conductive strip lines can be implemented in multiple ways:

[0022] In implementation method 1, the third and fourth conductive strip lines can be implemented as microstrip lines. This allows the power feed detection unit to implement the power feed detection function through these two conductive strip lines, saving deployment space and cost. Furthermore, the microstrip lines can be connected to other components in a manner that avoids plug-in connections, effectively reducing insertion loss.

[0023] In a second implementation, the feed detection unit may further include a second cavity, the second cavity being formed of a conductive material, and the conductor component being coupled to the ground circuit by coupling to the second cavity. Thus, by utilizing existing components in the feed network (i.e., the second cavity) to achieve grounding of the conductor component, not only is it possible to avoid the need for additional grounding components, thus helping to reduce the cost of the feed network, but the large area of ​​the second cavity can also be utilized to quickly change the impedance distribution on the feed link when the conductor component contacts the fourth conductive strip line, thereby more quickly switching the feed link from a normal operating state to an impedance mismatch state.

[0024] In one possible design of implementation method 2, the feed detection unit may further include a third PCB. The third PCB is fixed in position by snapping into the second cavity. The fourth conductive strip line is located on a surface of the third PCB opposite the conductor component. Thus, when the conductor portion moves to the position where the fourth conductive strip line is located, the conductor component can contact the fourth conductive strip line.

[0025] In one possible design for implementation method 2, the conductive component can be a conductive spring, with a first end coupled to the second cavity and a second end suspended on a side of the fourth conductive strip line opposite the conductive spring. Thus, when the second transmission component drives the conductive component to the fourth position, the second end of the conductive spring deforms to contact the fourth conductive strip line. This design can change the impedance of the feeder link by controlling the deformation of the conductive spring, thereby adjusting the operating state of the feeder link.

[0026] In one possible design of implementation mode 2, the feed detection unit may further include a second slide, which is located on a surface of the second cavity opposite to the third PCB, or on a surface of the third PCB opposite to the conductor component. In this case, the conductor component can be moved to the third position or the fourth position in a variety of ways, such as:

[0027] In a specific structural design, the conductor component may be a sliding conductor, and the sliding conductor slides along the second slideway to the third position or the fourth position;

[0028] In another specific structural design, the feed detection unit may further include a sliding medium, one end of the conductor component is embedded in the sliding medium, and the sliding medium slides along the second slideway to drive the conductor component embedded in the sliding medium to move to the third position or the fourth position;

[0029] In another specific structural design, the feed detection unit may further include a fourth PCB, the conductor component is a fifth conductive strip line, the fifth conductive strip line is laid flat inside the fourth PCB, and the fourth PCB slides along the second slide to drive the fifth conductive strip line laid flat in the fourth PCB to move to a third position or a fourth position.

[0030] In a possible design of structure 2, the feeding network may include P first feeding points and P second feeding points respectively located in P feeding links, and the feeding detection unit may include P fourth conducting strip lines and P conductor components, and the P fourth conducting strip lines respectively conduct the P first feeding points and the P second feeding points. In this case, the second controller may first control the second transmission component to respectively drive Q conductor components among the P conductor components to move, so as to ensure that the Q conductor components do not contact the Q fourth conducting strip lines among the P fourth conducting strip lines. In this way, the Q feeding links corresponding to the Q conducting strip lines are theoretically in a normal working state, and the second controller may calculate the third standing wave ratio of the Q feeding links in this case. Afterwards, the second controller may again control the second transmission component to respectively drive the Q conductor components to move, so as to ensure that the Q conductor components contact the Q fourth conducting strip lines. In this way, the Q feeding links are theoretically in an abnormal working state, and the second controller may calculate the fourth standing wave ratio of the Q feeding links in this case. If the difference between the third and fourth standing wave ratios is not greater than a preset difference threshold, it indicates that the Q feeder links have not changed their operating states under the control of the second controller, and the second controller can therefore determine that the Q feeder links are abnormally connected. Where P is a positive integer greater than or equal to 2, and Q is a positive integer less than or equal to P. This method not only enables the connection status of any number of feeder links to be detected through a single movement operation, but also enables the identification of misaligned connection problems between multiple feeder links by detecting the line sequence of any number of feeder links.

[0031] Structure Three

[0032] In structure three, the feed detection unit may include a third controller and a switch unit, the first electrode of the switch unit is connected to the first feed point, the second electrode of the switch unit is connected to the second feed point, and the control electrode of the switch unit is connected to the third controller. In this case, when it is necessary to control the feed link to be in a normal working state, the third controller can turn on the first electrode and the second electrode of the switch unit, so that the first feed point and the second feed point can be turned on through the turned-on first electrode and the second electrode, and the feed link where the first feed point and the second feed point are located is in a normal working state. When it is necessary to control the feed link to be in an abnormal working state, the third controller can disconnect the first electrode and the second electrode of the switch unit, so that the first feed point and the second feed point are disconnected, and the feed link where the first feed point and the second feed point are located is in an abnormal working state. In this design, the feed detection unit can switch the path or disconnection of the feed link through the switch control method to change the working state of the feed link.

[0033] In a second aspect, the present application provides a base station antenna, comprising an antenna port, an antenna array, and a feed network as described in any one of the first aspects above. The first end of the feed network can be connected to the antenna port, and the second end of the feed network can be connected to the antenna array. When the feed network is in normal operation: in downlink transmission, the feed network can feed the transmit signal from the antenna port and send it to the antenna array, and the antenna array radiates the feed-processed transmit signal; in uplink transmission, the antenna array can send the received signal to the feed network after receiving it, and the feed network can feed the receive signal from the antenna array and send it to the antenna port.

[0034] In a third aspect, the present application provides a base station device, comprising one or more transceivers and a base station antenna as described in the second aspect above, wherein the one or more transceivers can be connected to the base station antenna.

[0035] In one possible design, the transceiver may be a remote radio unit.

[0036] The various designs in the above-mentioned first to third aspects will be described in detail in the following embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram exemplarily illustrates a flow chart of a detection cable connection method;

[0038] Figure 2 A schematic diagram illustrating another method for connecting detection cables;

[0039] Figure 3 A schematic diagram of a system architecture applicable to the embodiments of the present application is exemplified;

[0040] Figure 4 A schematic diagram illustrating the internal structure of a base station antenna provided in an embodiment of the present application is exemplified;

[0041] Figure 5A The following is a schematic structural diagram of a base station antenna provided in Example 1 of the present application;

[0042] Figure 5B The following is a schematic diagram showing the structure of another base station antenna provided in the first embodiment of the present application;

[0043] Figure 6 The following is a schematic diagram showing the structure of another base station antenna provided in the first embodiment of the present application;

[0044] Figure 7 A schematic structural diagram of a feeding network provided in the second embodiment of the present application is exemplified;

[0045] Figure 8 The following is a schematic structural diagram of a feeding detection unit provided in the second embodiment of the present application;

[0046] Figure 9 The following is a schematic diagram showing the structure of a first PCB and a second PCB provided in the second embodiment of the present application;

[0047] Figure 10 A schematic structural diagram of a feeding network provided in the third embodiment of the present application is exemplified;

[0048] Figure 11 The following is an exemplary diagram showing a system architecture corresponding to a feeding network provided in the third embodiment of the present application;

[0049] Figure 12 A schematic structural diagram of a feeding network provided in the fourth embodiment of the present application is exemplified;

[0050] Figure 13 The following is a schematic structural diagram of a power feeding detection unit provided in the fourth embodiment of the present application;

[0051] Figure 14 A schematic structural diagram of a third PCB and a conductor component provided in the fourth embodiment of the present application is exemplarily shown;

[0052] Figure 15 The following is a schematic structural diagram of another feeding detection unit provided in the fourth embodiment of the present application;

[0053] Figure 16 A schematic structural diagram of a fourth conductive strip line and a conductor component provided in the fourth embodiment of the present application is exemplified;

[0054] Figure 17 A schematic structural diagram of another feeding detection unit provided in the fourth embodiment of the present application is exemplified;

[0055] Figure 18 The following is a schematic structural diagram of a third PCB and a fourth PCB provided in the fourth embodiment of the present application;

[0056] Figure 19 The following is a schematic structural diagram of another feeding detection unit provided in the fourth embodiment of the present application;

[0057] Figure 20 A schematic structural diagram of another fourth conductive strip line and conductor component provided in the fourth embodiment of the present application is exemplarily shown. DETAILED DESCRIPTION

[0058] The base station antenna provided in the embodiment of the present application can be applicable to various communication systems, such as: a fifth generation (5G) communication system or a new radio (NR) system, a 6G communication system, a long term evolution (LTE) system, a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS) system, an LTE frequency division duplex (FDD) system, an LTE time division duplex (TDD) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) communication system, etc., and of course, it can also be a communication system in other unlicensed frequency bands, without limitation.

[0059] The following will describe the technical solutions in the embodiments of the present application in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0060] Figure 3 A schematic diagram of a system architecture applicable to the embodiment of the present application is shown as an example. Figure 3 As shown, the system architecture may include wireless access network equipment, such as but not limited to Figure 3The base station 100 shown. The wireless access network device can be located in a base station subsystem (BBS), a terrestrial radio access network (UMTS terrestrial radio access network, UTRAN) or an evolved universal terrestrial radio access network (E-UTRAN), and is used to provide cell coverage of wireless signals to achieve connection between terminal equipment and the radio frequency end of the wireless network. Specifically, the base station 100 can be a base transceiver station (BTS) in a GSM or CDMA system, a base station (NodeB, NB) in a WCDMA system, an evolved base station (evolutional NodeB, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the base station 100 can also be a relay station, an access point, a vehicle-mounted device, a wearable device, a base station in a future 5G network, or a base station in a future evolved PLMN network, etc., for example, a new wireless base station, and the embodiments of the present application are not limited thereto.

[0061] like Figure 3 As shown, a possible structure of base station 100 may include base station antenna 110, transceiver 120, and baseband processing unit 130. The base station antenna may use an analog beamforming antenna to form an antenna system, a digital beamforming antenna to form an antenna system, or a new generation beamforming antenna to form an antenna system, such as a hybrid beamforming (HBF) antenna system formed by using both analog beamforming and digital beamforming antennas. The transceiver 120 may be connected to an antenna port of the base station antenna 110. In this way, the base station antenna 110 may receive a transmit signal sent by the transceiver 120 through its antenna port and radiate it through the radiating elements of the base station antenna 110, or may transmit a receive signal received by the radiating elements of the base station antenna 110 to the transceiver 120. Furthermore, the base station antenna 110 and the transceiver 120 may be integrated into the same device, such as an active antenna unit (AAU).

[0062] In an implementation, the transceiver 120 may be a remote radio frequency unit, and the baseband processing unit 130 may be a baseband unit. In this case, the baseband unit may be used to process the baseband signal to be transmitted and transmit it to the remote radio frequency unit, or receive and process the received signal sent by the remote radio frequency unit (i.e., the baseband signal obtained by converting the received radio frequency signal received by the base station antenna 110 during the signal reception process and then processed by the remote radio frequency unit). The remote radio frequency unit may convert the baseband signal to be transmitted sent by the baseband unit into a transmit radio frequency signal (including performing necessary signal processing on the baseband signal to be transmitted, such as signal amplification), and then transmit the transmit radio frequency signal to the base station antenna 110 through the antenna port of the base station antenna 110, which radiates the transmit radio frequency signal. Alternatively, the remote radio frequency unit may also receive the receive radio frequency signal sent by the antenna port of the base station antenna 110, convert it into a receive baseband signal, and then transmit it to the baseband unit.

[0063] It should be understood that Figure 3 Only the connection relationship between one transceiver 120 and one antenna port of the base station antenna 110 is illustrated. In other optional implementations, the number of antenna ports in the base station antenna 110 may be at least two, and the number of transceivers 120 may also be at least two, wherein each antenna port may be connected to one transceiver 120, and multiple transceivers 120 may be connected to the same baseband processing unit 130.

[0064] Figure 3 A possible deployment scenario of base station antennas is also exemplified. Figure 3 As shown, the deployment scenario may include a pole, an antenna adjustment bracket, a feeder, a joint seal and a grounding device. Among them, the end of the base station antenna 110 close to the antenna port can be fixedly connected to the pole, and the end of the base station antenna 110 away from the antenna port can be movably connected to the pole through the antenna adjustment bracket, so that the position of the base station antenna 110 can be adjusted by the antenna adjustment bracket. A feeder is led out from the antenna port of the base station antenna 110 and connected to the transceiver 120, and the feeder can also be extended to the grounding pipe to connect to the grounding device. Among them, the connection between the antenna port and the feeder, as well as the connection between the feeder and the grounding pipe, can be sealed by a joint seal. It should be understood that Figure 3 Only a deployment method of a base station antenna including one antenna is shown. In other scenarios, the base station antenna may also include multiple antennas installed around a pole. The installation positions of the multiple antennas can be the same or different. When the installation positions are different, the multiple antennas can form different beam coverage ranges.

[0065] The internal structure of the base station antenna in the embodiment of the present application is exemplarily introduced.

[0066] Figure 4The internal structure diagram of a base station antenna provided in an embodiment of the present application is exemplarily shown as follows: Figure 4 As shown, the base station antenna may include an antenna port, a feed network, and an antenna array. The feed network and antenna array are usually placed in a radome. The radome has good electromagnetic wave penetration characteristics in terms of electrical performance and can withstand the effects of harsh external environments in terms of mechanical performance. The radome isolates these components from the external environment, which helps to protect these components from the effects of harsh external environments. The antenna port is usually placed on the outside of the radome to achieve plug-in with the transceiver. The base station antenna may include a plurality of radiating units (such as Figure 4 Each graphic "×" in the figure is a radiation unit) and at least one antenna array composed of a metal reflector, multiple radiation units are usually placed on the front of the metal reflector, and the metal reflector can reflect the antenna signal incident on the front of the metal reflector and concentrate it on the receiving point of the radiation unit to improve the receiving sensitivity of the antenna signal and enhance the receiving ability of the antenna. In contrast to the radiation unit, other electrical components in the base station antenna (such as various components in the feeding network) are usually arranged on the back of the metal reflector. In this way, the metal reflector can also block or shield the radio waves emitted from other electrical components on its back to reduce the interference of other radio waves on the received signal. The metal reflector can also be called a base plate, an antenna panel or a reflecting surface, etc. The frequencies of the radiation units in the same antenna array can be the same or different. The base station antenna may also include a transmission or calibration network (such as a transmission component or a calibration network) connected to the feed network. The base station antenna can control the feed network through the transmission component to achieve different beam radiation directions, and can also obtain a calibration signal (such as a target phase) through the calibration network. The phase-shift feeding parameters in the feed network are adjusted according to the deviation between the actual phase of the antenna array and the target phase, so as to gradually adjust the actual phase of the antenna array to the target phase and achieve accurate transmission and reception operations.

[0067] Further introduce some terms involved in the following embodiments of this application:

[0068] (1) Radiating unit: It is a unit that constitutes the basic structure of the antenna and is used to radiate or receive radio waves. The radiating units in the base station antenna mainly include two types: vibrator units and patch units. The vibrator unit is also called antenna vibrator or vibrator, and is mainly used in dual-polarization antennas, low-frequency antennas or high-frequency antennas. The patch unit is mainly used in narrowband antennas, single-band antennas and indoor antennas. The radiating unit in this application can be used for single-band antennas or multi-band antennas, and can be used for both single-polarization antennas and multi-polarization antennas. This application does not make specific restrictions on this.

[0069] (2) Feeding network: The feeding network in the present application can be composed of at least one feeding link, and each feeding link in at least one feeding link is usually composed of a controllable impedance transmission line (referred to as a feeder line for short). The feeding link may include feeding components such as a phase shifter or a power divider (PD), such as only a phase shifter, only a power divider, or both a phase shifter and a power divider. Among them, a phase shifter is a device that can adjust the phase of a signal, and can include a digital phase shifter and an analog phase shifter. A power divider is a device that can divide an input signal into two or more output signals according to energy, and the energy of the two or more output signals can be equal or unequal. When the power divider is used in reverse, the power divider can also combine the two or more input signals into one output signal according to energy, and the energy of the output signal is equal to the sum of the energy of the two or more input signals. A power divider used in reverse can also be called a combiner. When a feeder link includes only a phase shifter, it can feed the transmit signal to the radiating element at a specific phase, or send the receive signal to the remote radio unit at a specific phase. When a feeder link includes only a power splitter, it can feed the transmit signal to the radiating element at a specific amplitude, or send the receive signal to the remote radio unit at a specific amplitude. When a feeder link includes both a power splitter and a phase shifter, it can feed the transmit signal to the radiating element at a specific amplitude and phase, or send the receive signal to the remote radio unit at a specific amplitude and phase.

[0070] In the embodiment of the present application, the feed link may include, in addition to the phase shifter and / or power divider, one or more other feed components, such as Figure 4 The combiner / splitter or filter shown. A filter is a passive device with a frequency-selective function that effectively filters out specific frequencies or frequencies other than a certain frequency, allowing signals with specific frequencies to pass through while attenuating signals with other frequencies, thereby filtering out interference noise or performing spectrum analysis. A combiner / splitter is a combination of the functions of a combiner and a splitter. A combiner is a device that can combine two or more RF signals corresponding to two or more frequencies into one RF signal. A splitter is a device that can split one RF signal into two or more RF signals corresponding to two or more frequencies. A combiner / splitter is a device that can both combine two or more RF signals corresponding to two or more frequencies into one RF signal and split one RF signal into two or more RF signals corresponding to two or more frequencies. Combiners, splitters, and combiners / splitters can also prevent mutual interference between signals at different frequencies.

[0071] It should be pointed out that when the feed link includes multiple feeding components, the multiple feeding components can be integrated on the same physical unit, or they can be integrated on different physical units respectively. They can also be partially integrated on the same physical unit and the other parts integrated on different physical units in any combination, without specific limitation.

[0072] It should be understood that when the feed network includes multiple feed links, the multiple feed links can have the same feed components and connection relationships, or they can have different feed components or different connection relationships. The multiple feed links can correspond to the same antenna port and the same antenna array, or they can correspond to different antenna ports and different antenna arrays respectively. This application does not make specific limitations on this.

[0073] (3) Standing wave and standing wave ratio: Standing wave refers to a distribution state formed by two waves with the same frequency and opposite transmission directions along the transmission line. These two waves can be electric waves or other waves. One of the two waves is generally a reflected wave of the other wave. To facilitate the description of standing waves, this application also introduces the standing wave ratio to characterize the transmission of waves. The standing wave ratio can be represented by the ratio of the electrical parameter used to characterize the wave emitted by the transmitter (such as voltage or electrical power, etc., hereinafter referred to as the electrical signal) to the electrical parameter used to characterize the wave received by the receiver, or it can be represented by the ratio of the electrical parameter used to characterize the reflected wave (such as the difference between the power of the wave emitted by the transmitter and the power of the wave received by the receiver) to the wave emitted by the transmitter. When the standing wave ratio is smaller, it means that there are fewer reflected waves, and more waves emitted by the transmitter can be sent to the receiver. When the standing wave ratio is larger, it means that there are more reflected waves, and only a small part of the waves emitted by the transmitter can be sent to the receiver.

[0074] In the base station antenna, each feed link in the feed network is composed of its corresponding impedance transmission line, and each feed link actually matches its corresponding antenna array according to a preset impedance relationship. If a feed link is abnormal (such as a feed link break, a feed link short circuit, or an impedance mismatch in the feed link), the impedance on the feed link will also change, thereby affecting the working state of the feed link and even the entire feed network. Taking into account that the standing wave ratio of the feed link will increase under abnormal conditions such as a feed link break, a feed link short circuit, and an impedance mismatch in the feed link, the present application can detect the working state of each feed link by detecting the standing wave ratio of the feed link, so as to maintain the normal operation of the base station antenna as much as possible.

[0075] The following describes the standing wave detection solution in this application with reference to specific embodiments.

[0076] It should be noted that the names of the various ports in the following description are merely exemplary. In other alternative implementations, the various ports may have other names. As long as the port can achieve the same or similar functions as the ports in this application, even if the port name is different from the port name in this application, it falls within the scope of protection of this application and will not be further described in detail in this application.

[0077] It should be noted that in the following description, ports have a corresponding relationship, which may mean that the two ports are the same port, or that the two ports are connected through a line. This application does not make any specific limitations on this.

[0078] It should be noted that in the following description, "connection" refers to electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components, such as A and B. Alternatively, A can be directly connected to C, C can be directly connected to B, and A and B can be connected through C.

[0079] It should be understood that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "At least one" refers to one or more, and "plurality" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0080] Furthermore, unless otherwise specified, ordinal numbers such as "first" and "second" in the embodiments of the present application are used to distinguish multiple objects and are not used to define the order, timing, priority, or importance of the multiple objects. For example, the first conductive line, the second conductive line, the third conductive line, and the fourth conductive line are only used to distinguish different conductive lines and do not indicate different priorities or importance of the four conductive lines.

[0081] [Example 1]

[0082] Figure 5A and Figure 5B The following is a schematic diagram showing the structures of two base station antennas provided in the first embodiment of the present application. Figure 5A and Figure 5B As shown, the base station antenna may include an antenna port (TR), a feed network and an antenna array, wherein the antenna port TR is connected to the first end (A1) of the feed network, and the second end (A2) of the feed network is connected to the antenna array. The feed network may include a first feed point (B1), a second feed point (B2) and a feed detection unit, wherein the first feed point B1 is connected to the first end (C1) of the feed detection unit, and the second feed point B1 is connected to the second end (C2) of the feed detection unit, and the first feed point B1 and the second feed point B2 are located in the same feed link (L). It should be pointed out that although Figure 5A and Figure 5B Although not illustrated in the figure, one or more feeding components may also be provided on the feed link L, such as one or more of the phase shifters, power dividers, combiners, splitters, combiner / splitters or filters described above, which will not be described in detail in this application.

[0083] In the embodiment of the present application, the feeder link L can have the following two working states:

[0084] Normal working state: When the feed link L is in normal working state, the feed link L can feed the transmission signal from the antenna port and send it to the antenna array, or feed the reception signal from the antenna array and send it to the antenna port. In this case, the first feeding point B1 and the second feeding point B2 are turned on, and the electrical signal received by the input feeding point in the first feeding point B1 and the second feeding point B2 (the input feeding point in the downlink transmission scenario is B1, and the input feeding point in the uplink transmission scenario is B2) and the electrical signal emitted by the output feeding point in the first feeding point B1 and the second feeding point B2 (the output feeding point in the downlink transmission scenario is B2, and the output feeding point in the uplink transmission scenario is B1) are not much different, and the standing wave ratio of the feed line between the first feeding point B1 and the second feeding point B2 is relatively small.

[0085] Abnormal working state: The abnormal working state of the feeder link L includes an open circuit state, a short circuit state or a mismatch state. Assuming that the abnormal working state of the feeder link L is caused by an abnormality in the feeder line between the first feed point B1 and the second feed point B2, then: when the feeder link L is in an open circuit state (that is, the feeder line between the first feed point B1 and the second feed point B2 is open circuit), the electric signal received by the input feed point in the first feed point B1 and the second feed point B2 cannot be transmitted to the output feed point in the first feed point B1 and the second feed point B2. Therefore, the electric signal emitted by the output feed point in the first feed point B1 and the second feed point B2 becomes less, resulting in an increase in the standing wave of the feeder line between the first feed point B1 and the second feed point B2; when the feeder link L is in a short circuit state (that is, the feeder line between the first feed point B1 and the second feed point B2 is short circuited), the electric signal between the first feed point B1 and the second feed point B2 is greater. The impedance mismatch on the feeding link causes all the electrical signals received by the input feeding points of the first feeding point B1 and the second feeding point B2 to be reflected away, and almost no electrical signals are transmitted to the output feeding points of the first feeding point B1 and the second feeding point B2, resulting in an increase in the standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2; when the feeding link L is in an impedance mismatch state, part of the electrical signals received by the input feeding points of the first feeding point B1 and the second feeding point B2 are transmitted to the output feeding points of the first feeding point B1 and the second feeding point B2, and the other part is transmitted to other circuits, and the electrical signals emitted by the output feeding points of the first feeding point B1 and the second feeding point B2 become less, which also causes the standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 to increase. It can be seen from this that when the abnormal working state of the feeder link L is determined by the feeder line between the first feeding point B1 and the second feeding point B2, no matter what abnormal working state the feeder link L is in, the standing wave ratio of the feeder line between the first feeding point B1 and the second feeding point B2 becomes larger.

[0086] In view of this, in an embodiment of the present application, when it is necessary to detect the working state of the feed link L, the feed link L can be first controlled to be in a preset working state (such as a normal working state or an abnormal working state), and then a detection signal is sent from the input end of the feed link L to the output end of the feed link L (such as sending a downlink detection signal through a baseband unit, or sending an uplink detection signal through a terminal device). Afterwards, the feed detection unit collects the first electrical signal at the first feeding point B1 and the second electrical signal at the second feeding point B2, and then uses the ratio of the input electrical signal to the output electrical signal in the first electrical signal and the second electrical signal as the current standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 (in the downlink transmission scenario, the electrical signal at the feeding point B1 is the input electrical signal and the electrical signal at the feeding point B2 is the output electrical signal, or in the uplink transmission scenario, the electrical signal at the feeding point B2 is the input electrical signal and the electrical signal at the feeding point B1 is the output electrical signal). When the current standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 is significantly different from the standing wave ratio corresponding to the preset working state, it means that the current working state of the feeder between the first feeding point B1 and the second feeding point B2 is different from the preset working state of the pre-controlled feed link L, and the feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal, resulting in abnormal connection of the feeder link L. When the current standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 is not much different from the standing wave ratio corresponding to the preset working state, it means that the current working state of the feeder between the first feeding point B1 and the second feeding point B2 is the same as the preset working state of the pre-controlled feed link L, the feeder connection between the first feeding point B1 and the second feeding point B2 is normal, and if other feeder connections on the feeder link L are also normal, then the feeder link L is connected normally.

[0087] It should be noted that the above-mentioned “the first feeding point B1 is connected to the first end C1 of the feeding detection unit, and the second feeding point B2 is connected to the second end C2 of the feeding detection unit” may refer to any of the following:

[0088] like Figure 5B As shown, the first feeding point B1 and the second feeding point B2 are connected by a feeder line. The first feeding point B1 is also connected to the first end C1 of the feed detection unit via a line, and the second feeding point B2 is also connected to the second end C2 of the feed detection unit via a line. In this case, the feed link L is actually composed of a whole section of feeder line between the first end A1 and the second end A2 of the feed network, while the feed detection unit is located outside the feed link L and is only used to implement the above-mentioned standing wave detection function.

[0089] like Figure 5AAs shown, the first feeding point B1 is the first end C1 of the feeding detection unit, and the second feeding point B2 is the second end C2 of the feeding detection unit. In this case, the feeding link L is actually composed of a first section of the feeding line between the first end A1 of the feeding network and the first feeding point B1, a feeding detection unit, and a second section of the feeding line between the second feeding point B2 and the second end A2 of the feeding network. The feeding detection unit exists as a part of the feeding link L. Under this connection mode, the feeding detection unit can not only be used to realize the above-mentioned standing wave detection function, but also can synchronously participate in the feeding adjustment process of the feeding link L. For example, taking the preset working state as the normal working state as an example, when standing wave detection needs to be performed, the feeding detection unit can first turn on the first feeding point B1 and the second feeding point B2. In this case, the feed line between the first feeding point B1 and the second feeding point B2 should theoretically be in a normal working state. After the feed detection unit determines the standing wave ratio of the feed line between the first feed point B1 and the second feed point B2 through the above-mentioned standing wave detection process, if the standing wave is relatively large (such as greater than the preset standing wave ratio threshold), it means that the feed line between the first feed point B1 and the second feed point B2 is actually in an abnormal working state, and the feeder link L is abnormally connected. If the standing wave is relatively small (such as not greater than the preset standing wave ratio threshold), it means that the feed line between the first feed point B1 and the second feed point B2 is actually in a normal working state, and the feeder link L is connected normally. When it is determined that the feed link L is connected normally, the feed detection unit can continue to conduct the first feed point B1 and the second feed point B2 to maintain the normal operation of the base station antenna. In this way, even when standing wave detection is not required, the feed detection unit can also be used to participate in feed adjustment, which helps to maximize the utilization of resources in the feed network, while improving resource utilization and saving the deployment cost of the base station antenna as much as possible.

[0090] The following text Figure 5A The connection method shown in FIG is used as an example to introduce. In this connection method, if the feed link L is Figure 4 The illustrated embodiment includes a phase shifter, a combiner / splitter, or a filter. The feed detection unit can be set in any of the following locations:

[0091] Position 1: The first terminal C1 of the feed detection unit is connected to the antenna port, and the second terminal C2 of the feed detection unit is connected to the first terminal M of the combiner / splitter or filter. 11 In this setting mode, the feed detection unit is used to detect the power supply from the antenna port to the terminal M. 11 Feeder connection between them;

[0092] Position 2: The first end C1 of the feed detection unit is connected to the antenna port, and the second end C2 of the feed detection unit is connected to the second end M of the combiner / splitter or filter. 12(or the first end M of the phase shifter 21 In this configuration, the combiner / splitter or filter can be integrated into the feed detection unit. In this way, the feed detection unit can not only be used to detect the power supply from the antenna port to the M 12 (or end M 21 ) between the feeder line connection, and can also combine, split or filter the transmit and receive signals on the feeder link L;

[0093] Position 3: The first terminal C1 of the feed detection unit is connected to the antenna port, and the second terminal C2 of the feed detection unit is connected to the second terminal M of the phase shifter. 22 (or antenna array). In this configuration, the phase shifter, and the combiner / splitter or filter are all integrated into the feed detection unit. In this way, the feed detection unit can not only be used to detect the power supply from the antenna port to the terminal M, but also to detect the power supply from the antenna port to the terminal M. 22 The feeder line connection between the antennas (or antenna arrays) can also be monitored to perform phase shifting, combining, branching or filtering on the receiving and transmitting signals on the feeder link L.

[0094] In an optional embodiment, to meet actual production needs, the first feed point B1 and the second feed point B2 can correspond to two existing cable connectors on the feed link L, such as the cable connector corresponding to the antenna port TR and the cable connector corresponding to the antenna array. With this embodiment, the feed detection unit can be directly set between the two existing cable connectors. In this way, there is no need to split the feed link additionally, and the feed adjustment and feeder detection functions between the two cable interfaces can be integrated into one feed detection unit. This helps to make the most of the existing cable structure to simplify the design complexity of adding a new feeder detection function inside the base station antenna.

[0095] The above content is based on an example in which a feed network includes one feed link. The feed detection unit can detect the connection status of one feed link by performing a standing wave detection operation. In other optional embodiments, the feed network can also include multiple feed links. The feed detection unit can detect the connection status of one or more feed links among the multiple feed links through a single standing wave detection operation. For example:

[0096] Figure 6 A schematic diagram illustrating the structure of another base station antenna provided in the first embodiment of the present application is shown as follows: Figure 6 As shown, in this example, the feeding network may include K first feeding points (such as feeding point B 11 Feeding point B 12 , ..., feeding point B 1K ), K second feeding points (such as feeding point B 21 Feeding point B 22 , ..., feeding point B2K ) and the feeding detection unit, K first feeding points B 11 ~B 1K With K second feeding points B 21 ~B 2K One-to-one correspondence, any corresponding first feeding point and second feeding point can be located in the same feeding link, such as the corresponding feeding point B 11 and feed point B 21 Located in feeder link L1, corresponding feed point B 12 and feed point B 22 Located in the feeder link L2, ..., the corresponding feed point B 1K and feed point B 2K Located on the feeder link L K , K is a positive integer greater than or equal to 2. These K feeder links L1~L K Each feeder link in the Figure 5A In this case, the feed detection unit may include K first terminals (such as terminal C 11 , end C 12 、……、End C 1K ) and K second terminals (such as terminal C 21 , end C 22 、……、End C 2K ), K first terminals C of the feeding detection unit 11 ~C 1K Connect K first feeding points B respectively 11 ~B 1K , feeding the K second terminals C of the detection unit 21 ~C 2K Connect K second feeding points B respectively 21 ~B 2K When it is necessary to determine the connection status of R (R is a positive integer less than or equal to K) feeder links among K feeder links through a standing wave detection operation, the feed detection unit can control the first feeding point and the second feeding point of each of the R feeder links to be turned on, off or impedance mismatched, so that the R feeder links are in a preset working state, and then determine the current standing wave ratio of each of the R feeder links according to the above-mentioned standing wave detection method. If there is one or more feeder links among the R feeder links whose current standing wave ratio does not match the standing wave ratio corresponding to the preset working state, the feed detection unit can issue a standing wave alarm for the one or more feeder links (such as sending an alarm message to the remote radio frequency unit) to indicate that the one or more feeder links are connected incorrectly.

[0097] It should be noted that, in the embodiment of the present application, the standing wave ratio corresponding to the preset working state can be a fixed value set by a person skilled in the art based on experience, or it can be obtained by comparing the standing wave ratio corresponding to another working state. When the standing wave ratio corresponding to the preset working state is obtained by comparing the standing wave ratio corresponding to another working state, the feed detection unit can successively control a certain feeder link to be in a normal working state and an abnormal working state, and respectively obtain the standing wave ratio of the feeder link in the normal working state and the standing wave ratio of the feeder link in the abnormal working state. In theory, the standing wave ratios in these two states should be quite different. Therefore, if the difference between the standing wave ratios in the two states is not large (such as not greater than a preset difference threshold), it means that the current connection of the feeder link is wrong. If the difference between the standing wave ratios in the two states is large (such as greater than a preset difference threshold), it means that the current connection of the feeder link is normal. This method actually also takes into account the problem that different process deviations correspond to different standing wave scenarios. Even if a certain process deviation causes a larger reflected wave in the circuit environment and another process deviation causes a smaller reflected wave in the circuit environment, the standing wave ratio difference determined by this comparison method can accurately reflect the same or different working states, which helps the feed detection unit to accurately detect the connection status under various process deviations, and effectively improve the ability of the feed detection unit to resist the influence of different process deviations.

[0098] Now based on Figure 6 The feeding network shown in the figure introduces a specific feeding detection process:

[0099] Before shipping a base station antenna, production personnel can use a feed detection unit to check the connectivity of each feed link within the antenna's feed network. If all feed links are confirmed to be properly connected, the internal cabling of the base station antenna can be confirmed to be properly connected, and the antenna can be shipped. If one or more feed links are found to be abnormally connected, production personnel can first repair these feed links and, after repair, re-test the connections of each feed link using the feed detection unit. Only after confirming that all feed links are properly connected can the antenna be shipped. This initial test before shipping a base station antenna ensures that the internal cabling is properly connected.

[0100] After assembling the base station antenna and external equipment (such as a remote radio unit or baseband unit) (for example, after a user purchases the base station antenna but before installing the base station equipment, or after the production staff assembles the base station equipment but before selling the base station equipment), a secondary inspection can be performed using the feed detection unit. If the secondary inspection does not detect a connection problem, it means that there is no problem with the internal and external cable connections of the base station antenna, and the base station equipment can be sold or installed later. If the secondary inspection still detects a connection problem, since the internal cable connection of the factory-installed base station antenna has been confirmed to be correct, the connection problem is obviously caused by a problem with the external cable connection of the base station antenna. For example, suppose external device 1 is connected to feeder link 1 via external cable 1, and external device 2 is connected to feeder link 2 via external cable 2. When external device 1 sends a detection signal but external device 2 does not, theoretically, feeder link 1 will be in normal operation while feeder link 2 will be in abnormal operation. That is, the feed detection unit should theoretically detect that the standing wave of feeder link 1 is small and the standing wave of feeder link 2 is large. However, if the standing wave of feeder link 1 is large and the standing wave of feeder link 2 is small, it can be determined that there is a problem with the connection between external cable 1 and external cable 2, such as external device 1 is connected to feeder link 2 via external cable 1, and external device 2 is connected to feeder link 1 via external cable 2. In this case, the production staff or user can reconnect the base station antenna and external devices and re-test using the feed detection unit until it is determined that there is no connection problem, and then sell or install the base station equipment. By performing a secondary test before selling or installing the base station equipment, base station equipment with correct internal and external cable connections can be sold or installed as much as possible.

[0101] It can be seen from this that the feeding network in Example 1 can not only accurately locate the internal cable connection problems of the base station antenna, but also accurately locate the external cable connection problems of the base station antenna. This method helps to calibrate the various cable connections in the base station equipment in advance before the base station equipment is deployed or installed, so as to increase the possibility of deploying or installing base station antennas with correct cable connections and reduce the probability of returning the base station equipment to the factory for repair or reinstallation of the base station equipment.

[0102] The following further describes the structure of the feed detection unit from Example 2 to Example 4. It should be noted that this application does not limit the feed detection unit to have only the following structures. As long as the feed detection unit can achieve the two functions of controlling the working state of the feed link and standing wave detection, it is within the scope of protection of this application.

[0103] [Example 2]

[0104] Figure 7 A schematic diagram of the structure of a feeding network provided in the second embodiment of the present application is shown as an example. Figure 7As shown, in this example, the feed detection unit may include a first controller, a first transmission component, a first conductive strip line, a second conductive strip line, and a third conductive strip line. The first conductive strip line is connected to the first feeding point B1, the second conductive strip line is connected to the second feeding point B2, and the first conductive strip line and the second conductive strip line are not in contact. The third conductive strip line may be fixedly connected to the first transmission component, and the transmission direction of the first transmission component may be as follows: Figure 7 The first controller can be connected to the control terminal of the first transmission component, the data acquisition terminal of the first feeding point B1 and the data acquisition terminal of the second feeding point B2 respectively.

[0105] When it is necessary to detect the feeder connection between the first feeding point B1 and the second feeding point B2:

[0106] The first controller can first control the first transmission component to drive the third guide wire along Figure 7 The direction "V1" shown in FIG. 1 is moved to the first position (eg Figure 7 ). When the third strip line is in the first position, one end of the third strip line is in contact with the first strip line, and the other end of the third strip line is in contact with the second strip line. In this way, the first feeding point B1 and the second feeding point B2 can be conducted through the connected first strip line, the third strip line and the second strip line, and the feeder between the first feeding point B1 and the second feeding point B2 is in normal working condition. In this case, the first controller obtains the first electrical signal at the first feeding point B1 from the data acquisition end of the first feeding point B1, obtains the second electrical signal at the second feeding point B2 from the data acquisition end of the second feeding point B2, and calculates the first standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 based on the first electrical signal and the second electrical signal. Theoretically, the feeder between the first feeding point B1 and the second feeding point B2 should have a small standing wave ratio under normal working conditions. Therefore, if the first standing wave ratio is large, it means that the feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal. The feed detection unit can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2.

[0107] Furthermore, if the first standing wave of the feeder between the first feeding point B1 and the second feeding point B2 is relatively small, it may be caused by the normal connection of the feeder between the first feeding point B1 and the second feeding point B2, or it may be caused by the first feeding point B1 and the second feeding point B2 being connected to the second feeding point and the first feeding point on other feeding links respectively. In order to improve the accuracy of the standing wave detection, the first controller can further control the first transmission component to drive the third conductive line along Figure 7 The direction "V2" shown in FIG. Figure 7Solid line position in ). When the third conductive strip line is in the second position, the third conductive strip line is not in contact with the first conductive strip line and / or is not in contact with the second conductive strip line, and the first feeding point B1 and the second feeding point B2 are disconnected, causing the feeder between the first feeding point B1 and the second feeding point B2 to switch to an open circuit state. In this case, the first controller obtains the third electrical signal at the first feeding point B1 from the data acquisition end of the first feeding point B1, and obtains the fourth electrical signal at the second feeding point B2 from the data acquisition end of the second feeding point B2, and calculates the second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 based on the third electrical signal and the fourth electrical signal. If the difference between the second standing wave ratio and the first standing wave ratio is greater than the preset difference threshold, it means that the feeder between the first feeding point B1 and the second feeding point B2 will change its working state accordingly with the switching operation of the feed detection unit, and the feeder connection between the first feeding point B1 and the second feeding point B2 is normal. If the difference between the second standing wave ratio and the first standing wave ratio is not greater than the preset difference threshold, it means that the working state of the feeder between the first feeding point B1 and the second feeding point B2 does not change with the switching operation of the feed detection unit. The first feeding point B1 and the second feeding point B2 may be connected to the second feeding point and the first feeding point of other feeding links respectively. The feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal. Therefore, the feed detection unit can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2.

[0108] like Figure 7 The feed detection unit shown can change the working state of the feed link by controlling the passage and disconnection of the feed link, and complete the standing wave detection by combining the standing wave ratio of the feed link under different working states. It can not only detect the connection abnormality of the feed link itself, but also detect the problem of incorrect line sequence connection between the feed link and other feed links, which helps to improve the accuracy of standing wave detection.

[0109] Now based on Figure 7 Based on the design ideas in the paper, the specific structure of the feed detection unit is introduced as an example.

[0110] In a specific structural design, Figure 8 The following is a schematic structural diagram of a feed detection unit provided in the second embodiment of the present application, wherein: Figure 8 Figure (a) shows a top view of the feed detection unit. Figure 8 Figure (b) shows a side view of the feed detection unit. Figure 8 As shown, in this example, the feeding detection unit may further include a first cavity, each first feeding point (such as B 11 ~B 15 ) and each second feeding point (such as B 21 ~B 25) is arranged outside the first cavity, such as Figure 8 The method shown in Figure (a) is symmetrically distributed on the outside of the two opposite sides of the first cavity, or symmetrically distributed on the outside of the two intersecting sides of the first cavity, or arranged side by side on the outside of the same side of the first cavity. Of course, it can also be distributed on the outside of one or more sides of the first cavity in other ways, and there is no specific limitation. Correspondingly, the first conductive strip line, the second conductive strip line and the third conductive strip line can be set on the inner side of the first cavity, such as the first conductive strip line, the second conductive strip line and the third conductive strip line are all rigid, the first conductive strip line is fixed in position by connecting to the first feeding point, the second conductive strip line is fixed in position by connecting to the second feeding point, and the third conductive strip line is movably connected to a side of the first cavity relative to the first conductive strip line or the second conductive strip line to approach or move away from the first conductive strip line and the second conductive strip line.

[0111] In an alternative embodiment, continue to refer to Figure 8 As shown, the feed detection unit may further include a first PCB and a second PCB arranged opposite to each other, and a first slideway, and the first guide line and the second guide line may be arranged on a surface of the first PCB opposite to the second PCB (such as Figure 8 The third conductive strip line can be set on the surface of the second PCB opposite to the first PCB (such as Figure 8 The first PCB can be fixed in position by being engaged in the slide groove. The first slide can be provided on the surface of the first PCB relative to the second PCB, and also on the surface of the first cavity relative to the first PCB, and the second PCB can slide along the first slide. The sliding direction of the first slide needs to have an angle with the line connecting the first guide wire and the second guide wire, which can be Figure 8 The direction perpendicular to the line connecting the first conductive strip line and the second conductive strip line as shown in Figure (a) may also be other directions at an angle to the line connecting the first conductive strip line and the second conductive strip line, and is not specifically limited.

[0112] According to the above embodiment, when the first feeding point (such as B) on a certain feeding link needs to be controlled 11 ) and the second feeding point (B 21 ) is in normal working condition, the first controller can control the first transmission component to drive the second PCB along the first slideway to approach the first feeding point B 11 and the second feeding point B 21 Slide in the direction of the connecting line until the two ends of the third conductive strip line on the second PCB overlap with the first conductive strip line and the second conductive strip line respectively, and then stop sliding the second PCB. 11and the second feeding point B 21 The first conductive strip line, the third conductive strip line and the second conductive strip line can be connected. 11 and the second feeding point B 21 When the feeder between the first and second PCBs is in an abnormal working state, the first controller can control the first transmission component to drive the second PCB to move away from the first feeding point B along the first slideway. 11 and the second feeding point B 21 The first feeding point B is connected to the third conductive strip line on the second PCB until both ends of the third conductive strip line on the second PCB are no longer in contact with the first conductive strip line and the second conductive strip line. 11 and the second feeding point B 21 disconnect.

[0113] It should be noted that Figure 8 The following description only takes the example of disposing the first and second conductive strip lines on the T1 side of the first PCB. In other optional embodiments, the first and second conductive strip lines may also be disposed on the T3 side of the first PCB, or simultaneously disposed on both the T1 side and the T3 side of the first PCB. When the first and second conductive strip lines are simultaneously disposed on both the T1 side and the T3 side of the first PCB, the second PCB may include a first portion disposed on the T1 side of the first PCB and a second portion disposed on the T3 side of the first PCB, and each of the first and second portions may be provided with a third conductive strip line on a surface relative to the first PCB.

[0114] The structure of the feed detection unit is further described when the feed network includes K feed links. In this example, it is assumed that K is 5, and the 5 first feed points (B 11 ~B 15 ) and 5 second feeding points (B 21 ~B 25 )like Figure 8 As shown in Figure (a), they are symmetrically arranged on the outside of the two opposite sides of the first cavity.

[0115] Figure 9 The following is a schematic structural diagram of a first PCB and a second PCB provided in the second embodiment of the present application, wherein: Figure 9 Figure (a) shows a top view of the first PCB. Figure 9 Figure (b) shows a top view of the second PCB. Figure 9As shown in Figure (a), in this example, the first PCB may include a first slide, and five first guide strip lines (1.1, 2.1, 3.1, 4.1, and 5.1) and five second guide strip lines (1.2, 2.2, 3.2, 4.2, and 5.2) corresponding to the five feed links, respectively. The five first guide strip lines 1.1 to 5.1 and the five second guide strip lines 1.2 to 5.2 are symmetrically arranged on the inner sides of two opposite sides of the first cavity. The first guide strip line corresponding to each feed link can be connected to the first feeding point in the corresponding feed link (such as the first guide strip line 1.1 is connected to the first feeding point of the first feed link). Figure 8 The first feeding point B shown in Figure (a) 11 , the first conductive line 2.1 is connected Figure 8 The first feeding point B shown in Figure (a) 12 , ..., the first conductive line 5.1 is connected Figure 8 The first feeding point B shown in Figure (a) 15 ), the second conductive strip line corresponding to each feed link can be connected to the second feeding point in the corresponding feed link (such as the second conductive strip line 1.2 is connected to Figure 8 The second feeding point B shown in Figure (a) 21 , the second conductive line 2.2 is connected Figure 8 The second feeding point B shown in Figure (a) 22 , ..., the second conductive line 5.2 is connected Figure 8 The second feeding point B shown in Figure (a) 25 ). The first slideway is arranged along a direction perpendicular to the connecting line of the first guide line and the second guide line. Figure 9 As shown in Figure (b), in this example, the second PCB may include at least one third conductive line, such as third conductive line 1, third conductive line 2, third conductive line 3, third conductive line 4, third conductive line 5, third conductive line 6, third conductive line 7, third conductive line 8 and third conductive line 9.

[0116] Continue to refer to Figure 8 and Figure 9 As shown in the figure, when it is necessary to detect the connection status of these five feeder links:

[0117] The first controller can first control the first transmission component to drive the second PCB along the first slideway to Figure 8Slide the left side as shown in Figure (a) until the five third conductive strip lines 1 to 5 in the second PCB overlap with the five first conductive strip lines 1.1 to 5.1 and the five second conductive strip lines 1.2 to 5.2 on the first PCB, that is, the two ends of the third conductive strip line 1 contact the first conductive strip line 1.1 and the second conductive strip line 1.2, respectively, the two ends of the third conductive strip line 2 contact the first conductive strip line 2.1 and the second conductive strip line 2.2, ..., the two ends of the third conductive strip line 5 contact the first conductive strip line 5.1 and the second conductive strip line 5.2, respectively. In this case, the third conductive strip line 1 conducts the first feeding point B. 11 With the second feeding point B 21 , the third conductive strip line 2 conducts to the first feeding point B 12 With the second feeding point B 22 , the third conductive strip line 3 conducts the first feeding point B 13 With the second feeding point B 23 , the third conductive strip line 4 conducts to the first feeding point B 14 With the second feeding point B 24 , the third conductive strip line 5 conducts the first feeding point B 15 With the second feeding point B 25 , and the third conductive strip lines 6 to 9 are idle. The first controller determines the first feeding point B according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The first standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The first standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 The first standing wave ratio between the feeders.

[0118] Afterwards, the first controller can control the first transmission component to drive the second PCB along the first slideway to Figure 8 Slide the right side as shown in Figure (a) until the four third conductive strip lines 1 to 4 in the second PCB overlap with the four first conductive strip lines 2.1 to 5.1 and the four second conductive strip lines 2.2 to 5.2 on the first PCB, that is, the two ends of the third conductive strip line 1 contact the first conductive strip line 2.1 and the second conductive strip line 2.2 respectively, the two ends of the third conductive strip line 2 contact the first conductive strip line 3.1 and the second conductive strip line 3.2 respectively, the two ends of the third conductive strip line 3 contact the first conductive strip line 4.1 and the second conductive strip line 4.2 respectively, and the two ends of the third conductive strip line 4 contact the first conductive strip line 5.1 and the second conductive strip line 5.2 respectively. In this case, the third conductive strip line 1 conducts the first feeding point B. 12 With the second feeding point B 22 , the third conductive strip line 2 conducts to the first feeding point B 13 With the second feeding point B 23 , the third conductive strip line 3 conducts the first feeding point B14 With the second feeding point B 24 , the third conductive strip line 4 conducts to the first feeding point B 15 With the second feeding point B 25 , the third conductor lines 5 to 9 are idle, and the connection relationship refers to Figure 8 As shown in Figure (a) in FIG. The first controller determines the first feeding point B according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The second standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The second standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 Theoretically, the first feeding point B 12 ~B 15 With the second feeding point B 22 ~B 25 Still conducting respectively, and the first feeding point B 11 With the second feeding point B 21 Switched from on to off, so the first feed point B 12 ~B 15 With the second feeding point B 22 ~B 25 The first standing wave ratio and the second standing wave ratio of the feed line between the corresponding first feeding point and the second feeding point should be not much different, and the first feeding point B 11 With the second feeding point B 21 The first standing wave ratio and the second standing wave ratio of the feed line between the two should be quite different. 12 ~B 15 With the second feeding point B 22 ~B 25 There is a large difference between the first standing wave ratio and the second standing wave ratio of the feed line between the first feeding point and the second feeding point, or if the first feeding point B 11 With the second feeding point B 21 If the first standing wave ratio and the second standing wave ratio of the feeder between them are not much different, it means that the feeder links corresponding to these first feeding points and the second feeding points are abnormal, and the first controller can issue a standing wave alarm for these abnormal feeder links.

[0119] Afterwards, the first controller can control the first transmission component to drive the second PCB to continue to move along the first slideway. Figure 8Slide to the right as shown in Figure (a) until the four third conductive strip lines 9, 1 to 3 in the second PCB overlap with the four first conductive strip lines 1.1, 3.1 to 5.1 and the four second conductive strip lines 1.2, 3.2 to 5.2 on the first PCB, that is, the two ends of the third conductive strip line 9 contact the first conductive strip line 1.1 and the second conductive strip line 1.2 respectively, the two ends of the third conductive strip line 1 contact the first conductive strip line 3.1 and the second conductive strip line 3.2 respectively, the two ends of the third conductive strip line 2 contact the first conductive strip line 4.1 and the second conductive strip line 4.2 respectively, and the two ends of the third conductive strip line 3 contact the first conductive strip line 5.1 and the second conductive strip line 5.2 respectively. In this case, the third conductive strip line 9 conducts the first feeding point B. 11 and the second feeding point B 21 , the third conductive strip line 1 is connected to the first feeding point B 13 With the second feeding point B 23 , the third conductive strip line 2 is connected to the first feeding point B 14 With the second feeding point B 24 , the third conductive strip line 5 is connected to the first feeding point B 15 With the second feeding point B 25 , the third conductive strip lines 4, 5, 6, 7 and 8 are idle. The first controller determines the first feeding point B respectively according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The third standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The third standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 The third standing wave ratio of the feeder between. Compared with the first standing wave ratio scenario, the first feeding point B 11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 Still conducting respectively, and the first feeding point B 12 With the second feeding point B 22 From on to off, theoretically, the first feed point B 11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 The first standing wave ratio and the third standing wave ratio of the feed line between the corresponding first feeding point and the second feeding point should be not much different, and the first feeding point B 12 With the second feeding point B 22 The first and third standing wave ratios of the feeder should differ greatly. Therefore, if the first feeding point B11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 There is a large difference between the first standing wave ratio and the third standing wave ratio of the feeder between the first feeding point and the second feeding point, or if the first feeding point B 12 With the second feeding point B 22 If the first standing wave ratio and the third standing wave ratio of the feeder between them are not much different, it means that the feeder links corresponding to these first feeding points and the second feeding points are abnormal, and the first controller can issue a standing wave alarm for these abnormal feeder links.

[0120] According to the above idea, the first controller can control the first transmission component to drive the second PCB to move to the right along the first slide in sequence. Each movement can control one of the feeder links to be disconnected and the other feeder links to be connected, until all feeder links have been disconnected at least once. After performing a round of standing wave detection in this way, the first controller can determine the line sequence of each feeder link based on the change in the standing wave ratio of each feeder link. For example, when controlling a feeder link to switch from the on state to the off state, the standing wave ratio of the feeder link remains unchanged, while the standing wave ratio of another feeder link changes from small to large and the change is more obvious, it can be determined that the connection relationship between the other feeder link and the feeder link is misaligned. This solution can not only detect abnormal connection problems of the feeder link itself, but also determine the misaligned connection problems between the feeder links by detecting the line sequence of each feeder link.

[0121] It should be noted that Figure 9 The second PCB shown in Figure (b) is only an example for the sake of convenience in introducing the solution. The number and position of the third conductive strip lines provided in the second PCB can be adjusted according to actual needs. For example, in another scenario, when it is necessary to detect the connection status of two feeder links through one movement, the second PCB can also be provided with only the following: Figure 9 The third conductive strip lines 6 to 8 and the third conductive strip lines 1 to 5 shown in FIG. 1 and FIG. 2 may be provided with only the third conductive strip lines 6 to 8 and the third conductive strip lines 1 to 5. Figure 9 The third conductive strip lines 6, 8, 9 and the third conductive strip lines 1 to 5 shown in FIG. 1 and FIG. 2 may be provided with only the third conductive strip lines 6, 8, 9 and the third conductive strip lines 1 to 5. Figure 9 The third conductive strip lines 6, 7 and third conductive strip lines 1 to 5 shown in FIG. 1 are not described in detail in this application.

[0122] [Example 3]

[0123] Figure 10 The following is a schematic diagram showing the structure of a feeding network provided in the third embodiment of the present application. Figure 11The system architecture diagram corresponding to this type of feed network is shown as an example. Figure 10 and Figure 11 As shown, in this example, the feed detection unit may include a third controller and a switch unit (K), the first electrode (d1) of the switch unit K is connected to the first feeding point B1, the second electrode (d2) of the switch unit is connected to the second feeding point B2, and the control electrode (d0) of the switch unit K is connected to the third controller. When it is necessary to detect the connection status of the feeder between the first feeding point B1 and the second feeding point B2, the third controller may first send a first control signal to the control electrode d0 of the switch unit K to control the switch unit K to turn on its first electrode d1 and the second electrode d2, and detect and obtain the first standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 in this scenario. Afterwards, the third controller may send a second control signal to the control electrode d0 of the switch unit K to control the switch unit K to disconnect its first electrode d1 and the second electrode d2, and detect and obtain the second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 in this scenario. Theoretically, if there is no problem with the connection of the feeder link L, the feeder between the first feeding point B1 and the second feeding point B2 is in a conductive state in the first scenario described above and in a disconnected state in the second scenario described above. The first standing wave ratio and the second standing wave ratio in these two scenarios should differ significantly. Therefore, if the difference between the first standing wave ratio and the second standing wave ratio is not greater than the preset difference threshold, it indicates that the feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal, and the third controller can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2.

[0124] In the embodiment of the present application, the switch unit K may refer to any unit capable of implementing the link on / off function, such as a triode, a transistor, or a voltage diode. When the switch unit K is a voltage diode, the first control signal may refer to a forward conduction voltage signal, and the second control signal may refer to a reverse blockage voltage signal.

[0125] In the above-mentioned embodiment three, the feed detection unit can also change the working state of the feed link by controlling the passage and disconnection of the feed link, and can complete the standing wave detection in combination with the standing wave ratio of the feed link under different working states. It should be noted that the above content is only introduced by taking the feed network as an example including one feed link. When the feed network includes multiple feed links, the third controller can be respectively connected to the control ends of multiple switch units corresponding to the multiple feed links. In this way, the third controller can detect the connection status of one or more feed links by controlling the conduction and disconnection of one or more switch units corresponding to one or more feed links in the multiple feed links. Regarding the specific implementation method of how to detect one or more feed links, please refer to the above-mentioned embodiment two, which will not be repeated here.

[0126] [Example 4]

[0127] Figure 12 A schematic diagram of the structure of a feeding network provided in the fourth embodiment of the present application is shown as an example. Figure 12 As shown, in this example, the feed detection unit may include a second controller, a second transmission component, a fourth conductive strip line and a conductor component, wherein the fourth conductive strip line connects the first feeding point B1 and the second feeding point B2, and the conductor component is coupled to the ground circuit. Moreover, the conductor component may be fixedly connected to the second transmission component, and the transmission direction of the second transmission component may be as follows: Figure 12 The second controller can be connected to the control terminal of the second transmission component, the data acquisition terminal of the first feeding point B1 and the data acquisition terminal of the second feeding point B2 respectively.

[0128] When it is necessary to detect the feeder connection between the first feeding point B1 and the second feeding point B2:

[0129] The second controller can first control the second transmission component to drive the conductor component along Figure 12 The direction of "V4" shown in FIG. 1 is moved to the third position (eg Figure 12 The solid line position in the figure). When the conductor component is in the third position, the conductor component does not contact the fourth conductive strip line, and the impedance on the feeder between the first feeding point B1 and the second feeding point B2 does not change. Therefore, the feeder between the first feeding point B1 and the second feeding point B2 is in a normal working state. In this case, the second controller obtains the first electrical signal at the first feeding point B1 from the data acquisition end of the first feeding point B1, and obtains the second electrical signal at the second feeding point B2 from the data acquisition end of the second feeding point B2. The first standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 is calculated based on the first electrical signal and the second electrical signal. Theoretically, the feeder between the first feeding point B1 and the second feeding point B2 should have a smaller standing wave ratio under normal working conditions. Therefore, if the first standing wave is relatively large, it means that the feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal, and the feed detection unit can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2;

[0130] Furthermore, if the first standing wave of the feeder between the first feeding point B1 and the second feeding point B2 is relatively small, it may be caused by the normal connection of the feeder between the first feeding point B1 and the second feeding point B2, or it may be caused by the first feeding point B1 and the second feeding point B2 being connected to the second feeding point and the first feeding point on other feeding links respectively. In order to improve the accuracy of the standing wave detection, the second controller may further control the second transmission component to drive the conductor component along Figure 12 The direction of "V3" shown in FIG. 1 is moved to the fourth position (eg Figure 12 The dotted line position in the figure). When the conductor component is in the fourth position, the conductor component contacts the fourth conductive strip line, and the impedance on the feeder between the first feeding point B1 and the second feeding point B2 changes. Most of the signals on the feeder between the first feeding point B1 and the second feeding point B2 will be transmitted to the ground circuit through the conductor component, causing the feeder between the first feeding point B1 and the second feeding point B2 to switch to an impedance mismatch state. In this case, the second controller obtains the third electrical signal at the first feeding point B1 from the data acquisition terminal of the first feeding point B1, and obtains the fourth electrical signal at the second feeding point B2 from the data acquisition terminal of the second feeding point B2. The second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 is calculated based on the third electrical signal and the fourth electrical signal. If the difference between the second standing wave ratio and the first standing wave ratio is greater than the preset difference threshold, it means that the feeder between the first feeding point B1 and the second feeding point B2 will change its working state accordingly with the switching operation of the feed detection unit, and the feeder connection between the first feeding point B1 and the second feeding point B2 is normal. If the difference between the second standing wave ratio and the first standing wave ratio is not greater than the preset difference threshold, it means that the working state of the feeder between the first feeding point B1 and the second feeding point B2 does not change with the switching operation of the feed detection unit. The first feeding point B1 and the second feeding point B2 may be connected to the second feeding point and the first feeding point of other feeding links respectively. The feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal. Therefore, the feed detection unit can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2.

[0131] like Figure 12 The feed detection unit shown can change the working state of the feed link by controlling the impedance change of the feed link, and complete standing wave detection by combining the standing wave ratio of the feed link under different working states. It can not only detect connection abnormalities in the feed link itself, but also detect errors in the line sequence connection between the feed link and other feed links, which helps to improve the accuracy of standing wave detection.

[0132] Now based on Figure 12 Based on the design ideas in the paper, the specific structures of several feeding detection units are introduced as examples.

[0133] Structure 1

[0134] In a specific structural design, Figure 13 The following is a schematic structural diagram of a feed detection unit provided in the fourth embodiment of the present application, wherein: Figure 13 Figure (a) shows a top view of the feed detection unit. Figure 13 Figure (b) shows a side view of the feed detection unit. Figure 13As shown, in this example, the feeding detection unit may further include a second cavity, each first feeding point (such as B 11 ~B 15 ) and each second feeding point (such as B 21 ~B 25 ) is arranged outside the second cavity, such as Figure 13 The fourth conductor strip and the conductor component can be arranged on the inner side of the second cavity. For example, the fourth conductor strip can be rigid, and the fourth conductor strip can be fixed in position by connecting the corresponding first feeding point and the second feeding point. The conductor component can be fixed in position by movably connecting to the second cavity, fixedly connecting to the transmission component or magnetic suspension.

[0135] For example, the second cavity can be made of a conductive material, and the second cavity is provided with Figure 13 The conductor component is electrically connected or coupled to the coupling point shown in Figure (b) of the figure to connect to the ground circuit. By utilizing existing components in the feed network (i.e., the second cavity) to ground the conductor component, not only does this eliminate the need for additional grounding components, saving the cost of the feed network, but the large area of ​​the second cavity can also be used to quickly change the impedance distribution on the feed link when the conductor component contacts the fourth strip line, allowing the feed link to switch from a normal operating state to an impedance mismatched state more quickly.

[0136] Continue to refer to Figure 13 As shown, the feed detection unit may further include a third PCB arranged opposite to the conductor component, and the fourth conductive strip line may be arranged on a surface of the third PCB opposite to the conductor component (eg, Figure 13 (b) shows the T4 surface.) At least one inner side wall of the second cavity may further be provided with a slide groove, and the third PCB is fixed in position by being engaged in the slide groove.

[0137] In the embodiment of the present application, the conductor component can slide in a direction close to or away from the fourth conductor line under the drive of the transmission component. There are many possible implementation methods. For example, in one case, the transmission component includes a telescopic rod, and there is an angle between the telescopic direction of the telescopic rod and the fourth conductor line, such as a direction perpendicular to the fourth conductor line. The conductor component is fixedly connected to the telescopic rod of the transmission component. In this way, the telescopic operation of the telescopic rod on the transmission component can drive the conductor component to slide in a direction close to or away from the fourth conductor line. In another case, the feed detection unit may also include a second slide ( Figure 13 (not shown in the figure), the second slide can be set on the surface of the third PCB relative to the conductor component, and also on the surface of the second cavity relative to the third PCB. The sliding direction of the second slide is at an angle to the fourth conductive line, and the conductive component slides along the second slide to slide toward or away from the fourth conductive line.

[0138] According to the above structural design, when the first feeding point (such as B) on a certain feeding link needs to be controlled 11 ) and the second feeding point (B 21 ) is in normal working condition, the second controller can control the second transmission component to drive the conductor component along the second slideway away from the first feeding point B 11 and the second feeding point B 21 The first feeding point B is configured to slide in the direction of the fourth conductive strip line until the conductive part is completely out of contact with the fourth conductive strip line, and then the sliding of the conductive part is stopped. 11 and the second feeding point B 21 It can be turned on by the preset impedance on the fourth conductive strip line. 11 and the second feeding point B 21 When the feeder between the two is in an abnormal working state, the second controller can control the second transmission component to drive the conductor component along the second slideway to approach the first feeding point B. 11 and the second feeding point B 21 The first feeding point B moves in the direction of the fourth conductive strip line until the conductive part coincides with the fourth conductive strip line, and then stops sliding the conductive part. 11 and the second feeding point B 21 The impedance of the feed line between the conductor part and the connected second cavity is changed, resulting in the first feeding point B 11 and the second feeding point B 21 The feeder between them is in an impedance mismatch state.

[0139] It should be noted that Figure 13The following description uses the example of disposing the fourth conductive strip line on the T4 side of the third PCB. In other optional embodiments, the fourth conductive strip line may also be disposed on the T5 side of the third PCB, or disposed on both the T4 and T5 sides of the third PCB. When the fourth conductive strip line is disposed on both the T4 and T5 sides of the first PCB, the conductor component may include a first portion disposed on the T4 side of the third PCB and a second portion disposed on the T5 side of the third PCB.

[0140] The structure of the feed detection unit is further described when the feed network includes K feed links. In this example, it is assumed that K is 5, and the 5 first feed points (B 11 ~B 15 ) and 5 second feeding points (B 21 ~B 25 )like Figure 13 As shown in Figure (a), they are symmetrically arranged on the outside of the two opposite sides of the second cavity.

[0141] Figure 14 The following is a schematic structural diagram of a third PCB and a conductor component provided in the fourth embodiment of the present application, wherein: Figure 14 Figure (a) shows a top view of the third PCB. Figure 14 Figure (b) shows a top view of the conductor component. Figure 14 Figure (c) shows a side view of the conductor component. Figure 14 As shown in Figure (a), in this example, the third PCB may include five fourth conductive strip lines (1, 2, 3, 4, and 5) corresponding to the five feeder links, and the fourth conductive strip line corresponding to each feeder link may connect the first feeding point and the second feeding point in the corresponding feeder link, such as the fourth conductive strip line 1 having two ends connected to the first feeding point and the second feeding point, respectively. Figure 13 The first feeding point B shown in Figure (a) 11 and the second feeding point B 21 , the two ends of the fourth conductive line 2 are connected Figure 13 The first feeding point B shown in Figure (a) 12 and the second feeding point B 22 , ..., the two ends of the fourth conductive line 5 are connected to Figure 13 The first feeding point B shown in Figure (a) 15 and the second feeding point B 25 The second slideway can be arranged in a direction perpendicular to each fourth guide line. Figure 14 Figure (b) and Figure 14As shown in Figure (c) of the figure, in this example, the conductor component can be composed of a first conductor plate (R1), a second conductor plate (R2), a first conductor connector (F1), and a second conductor connector (F2). Conductor plate R1 is parallel to conductor plate R2. The two ends of conductor connector F1 are respectively fixedly connected to one end of conductor plate R1 and one end of conductor plate R2, and the two ends of conductor connector F2 are respectively fixedly connected to the other end of conductor plate R1 and the other end of conductor plate R2. Using this hollow arrangement of the conductor component not only achieves coupling between the conductor component and the second cavity, but also minimizes the material required to set up the conductor component, saving the cost and weight of the feed detection unit.

[0142] Continue to refer to Figure 13 and Figure 14 As shown in the figure, when it is necessary to detect the line sequence connection status of these five feeder links:

[0143] The second controller can first control the second transmission component to drive the conductor component along the second slideway to Figure 13 Slide the left side as shown in Figure (a) until the conductor plate R2 on the conductor component is no longer in contact with the five fourth conductive strip lines 1 to 5 on the third PCB. In this case, the fourth conductive strip lines 1 to 5 are connected to the five first feeding points B. 11 ~B 15 With 5 second feeding points B 21 ~B 25 The second controller determines the first feeding point B according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The first standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The first standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 The first standing wave ratio between the feeders.

[0144] Afterwards, the second controller can control the second transmission component to drive the second PCB along the first slideway to Figure 13 Slide the right side as shown in FIG. (a) until the conductor plate R2 on the conductor component contacts the fourth conductive strip line 1 on the third PCB and does not contact the fourth conductive strip lines 2 to 5 on the third PCB. Figure 13 In this case, the first feeding point B 12 ~B 15 With the second feeding point B 22 ~B 25 The feed lines between them are still conducting, and the first feeding point B 11 With the second feeding point B 21Part of the signal on the feed line between the two will be transmitted to the second cavity (i.e., the ground circuit) through the conductor plate R2, the conductor connector F1, the conductor connector F2, the conductor plate R1, and the coupling point on the second cavity, resulting in the first feeding point B 11 With the second feeding point B 21 The second controller determines the first feeding point B according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The second standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The second standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 Theoretically, the first feeding point B 12 ~B 15 With the second feeding point B 22 ~B 25 Still conducting respectively, and the first feeding point B 11 With the second feeding point B 21 The first feed point B is switched from conduction to impedance mismatch. 12 ~B 15 With the second feeding point B 22 ~B 25 The first standing wave ratio and the second standing wave ratio of the feed line between the corresponding first feeding point and the second feeding point should be not much different, and the first feeding point B 11 With the second feeding point B 21 The first standing wave ratio and the second standing wave ratio of the feed line between the two should be quite different. 12 ~B 15 With the second feeding point B 22 ~B 25 There is a large difference between the first standing wave ratio and the second standing wave ratio of the feed line between the first feeding point and the second feeding point, or if the first feeding point B 11 With the second feeding point B 21 If the first standing wave ratio and the second standing wave ratio of the feeder between them are not much different, it means that the feeder links corresponding to these first feeding points and the second feeding points are abnormal, and the second controller can issue a standing wave alarm for these abnormal feeder links.

[0145] Afterwards, the second controller can control the second transmission component to continue to drive the conductor component along the second slideway to Figure 13 Slide the right side as shown in Figure (a) until the conductor plate R2 on the conductor component contacts the fourth conductive strip line 2 on the third PCB and does not contact the fourth conductive strip lines 1, 3 to 5 on the third PCB. The first feeding point B 11 、B13 ~B 15 With the second feeding point B 21 、B 23 ~B 25 The feed lines between them are still connected, and the first feeding point B 12 With the second feeding point B 22 Part of the signal on the feeder between the two will be transmitted to the ground circuit through the conductor plate R2, the conductor connector F1, the conductor connector F2, the conductor plate R1 and the coupling point on the second cavity, resulting in the first feeding point B 12 With the second feeding point B 22 The second controller determines the first feeding point B according to the above-mentioned standing wave detection method. 11 With the second feeding point B 21 The third standing wave ratio of the feeder between the first feeding point B 12 With the second feeding point B 22 The third standing wave ratio of the feeder between, ..., the first feeding point B 15 With the second feeding point B 25 Theoretically, compared with the first standing wave ratio scenario, the first feeding point B 11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 Still conducting respectively, and the first feeding point B 12 With the second feeding point B 22 Switching from conduction to impedance mismatch, the first feeding point B 11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 The first standing wave ratio and the third standing wave ratio of the feed line between the corresponding first feeding point and the second feeding point should be not much different, and the first feeding point B 12 With the second feeding point B 22 The first and third standing wave ratios of the feeder should differ greatly. Therefore, if the first feeding point B 11 、B 13 ~B 15 With the second feeding point B 21 、B 22 ~B 25 There is a large difference between the first standing wave ratio and the third standing wave ratio of the feeder between the first feeding point and the second feeding point, or if the first feeding point B 12 With the second feeding point B 22If the first standing wave ratio and the third standing wave ratio of the feeder between them are not much different, it means that the feeder links corresponding to these first feeding points and the second feeding points are abnormal, and the second controller can issue a standing wave alarm for these abnormal feeder links.

[0146] Following this principle, the second controller can control the second transmission component to drive the conductor component to move rightward along the second slideway. Each movement can disconnect one feeder link and connect the other feeder links, until all feeder links have been disconnected at least once. After performing a round of standing wave detection in this way, the second controller can determine the line sequence of each feeder link based on the changes in the standing wave ratio of each feeder link.

[0147] It should be noted that Figure 14 The conductor component shown in Figure (b) is merely an exemplary illustration for the sake of convenience in describing the solution. The number, position, shape, or size of the conductor component can be adjusted according to actual needs. For example, in other optional embodiments, the conductor component can also be configured as a solid block, a hollow conductor frame, or a sphere. Alternatively, the size of the conductor component can also be configured to simultaneously cover at least two fourth conductive strip lines, thereby enabling standing wave detection of at least two feeder links in a single sliding operation. This application will not further elaborate on this.

[0148] Structure 2

[0149] In another specific structural design, Figure 15 The following is a schematic structural diagram of another feeding detection unit provided in the fourth embodiment of the present application, wherein: Figure 15 Figure (a) shows a top view of the feed detection unit when the feed line is in an impedance mismatch state. Figure 15 Figure (b) shows a top view of the feed detection unit when the feed line is in normal working state. Figure 15 Figure (c) shows a side view of the feed detection unit. Figure 15 As shown, in this example, the feed detection unit may further include a second cavity, and the first feeding point B1 and the second feeding point B2 may be arranged side by side on the outside of the same side of the second cavity in the manner shown in (a) or (b) of Figure 15. The fourth conductive strip line and the conductor component may be arranged on the inner side of the second cavity. For example, the fourth conductive strip line may have rigidity, and the fourth conductive strip line is fixed in position by connecting the first feeding point B1 and the second feeding point B2. The second cavity may be set as a conductive structure, and the conductor component is connected to the coupling point by electrical connection or coupling to connect to the ground circuit.

[0150] Continue to refer to Figure 15As shown in FIG. 3(c), the feed detection unit may further include a sliding medium disposed relative to the fourth conductive strip line, the conductor component being disposed on the sliding medium, and a sliding direction of the sliding medium being at an angle to the fourth conductive strip line. For example, the sliding medium may be driven by the transmission component to slide directly along the sliding direction to approach or move away from the fourth conductive strip line. Alternatively, the feed detection unit may further include a second slideway ( Figure 15 (not shown in the figure), the second slide is arranged on the surface of the second cavity relative to the fourth conductive line, or is arranged on the surface of the fourth conductive line relative to the conductor component, and the sliding medium slides along the second slide to drive the conductor component close to or away from the fourth conductive line.

[0151] Figure 16 The structural diagram of the fourth conductive strip line and the conductor component corresponding to this structural design is shown as an example, wherein: Figure 16 Figure (a) shows a top view of the fourth conductive line. Figure 16 Figure (b) shows a top view of the conductor component. Figure 16 Figure (c) shows a side view of the conductor component. Figure 16 As shown in FIG. 1( a ), in this example, the fourth conductive strip line may be a bow-shaped structure, one end ( I1 ) of the bow-shaped structure is connected to the first feeding point B1 , and the other end ( I2 ) of the bow-shaped structure is connected to the second feeding point B2 , so as to connect the first feeding point B1 and the second feeding point B2 . Figure 16 Figure (b) and Figure 16 As shown in Figure (c) of the figure, in this example, the conductor component can be an embedded conductor embedded in the sliding medium on the side opposite the fourth stripline. When the feed detection unit includes two sliding media sections, one on each side of the fourth stripline, each section of the sliding medium can have an embedded conductor embedded in the side opposite the fourth stripline. Furthermore, the two sliding media sections can be fixedly connected for simultaneous sliding or separately configured for independent sliding, without limitation.

[0152] Continue to refer to Figure 15 and Figure 16 As shown, when it is necessary to detect the feeder connection between the first feeding point B1 and the second feeding point B2:

[0153] The second controller can first control the second transmission component to drive the sliding medium along the second slideway to Figure 15 The left side of the sliding medium shown in FIG (a) is moved until the embedded conductor on the sliding medium does not contact the fourth conductive strip line, and the sliding of the sliding medium is stopped. Figure 15As shown in Figure (b) of the figure. In this case, because the embedded conductor does not contact the fourth conductive strip line, the impedance of the feeder line between the first feeding point B1 and the second feeding point B2 does not change, and the feeder line between the first feeding point B1 and the second feeding point B2 is in normal operation. The second controller determines the first standing wave ratio of the feeder line between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method. The first standing wave ratio theoretically corresponds to the standing wave ratio under normal operation.

[0154] Afterwards, the second controller can control the second transmission component to drive the sliding medium along the second slideway to Figure 15 The sliding of the sliding medium is stopped when the embedded conductor on the sliding medium coincides with the fourth conductive strip line, as shown in FIG. Figure 15 As shown in Figure (a) in . In this case, since the embedded conductor contacts the fourth conductive strip line, the impedance on the feeder between the first feeding point B1 and the second feeding point B2 changes, causing the feeder between the first feeding point B1 and the second feeding point B2 to switch to an impedance mismatch state. The second controller determines the second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method. The second standing wave ratio theoretically corresponds to the standing wave ratio in the impedance mismatch state. If there is no problem with the feeder connection between the first feeding point B1 and the second feeding point B2, the first standing wave ratio and the second standing wave ratio should be quite different. Therefore, if the difference between the first standing wave ratio and the second standing wave ratio is not greater than the preset difference threshold, it means that the feeder connection between the first feeding point B1 and the second feeding point B2 is abnormal, and the second controller can issue a standing wave alarm for the feeder between the first feeding point B1 and the second feeding point B2.

[0155] For example, Figure 16 As shown, the center of the fourth conductive strip line's arch can also be configured as a protruding structure. This protruding structure contacts the embedded conductor in the sliding medium during impedance mismatch. This allows the sliding medium to switch between normal operation and impedance mismatch conditions of the feed link with minimal displacement, saving sliding length and improving operational flexibility and responsiveness in switching between operating states.

[0156] It should be noted that Figure 16 The sliding medium and the embedded conductor are arranged on both sides of the fourth conductive strip line as an example. In other optional embodiments, the sliding medium and the embedded conductor can also be arranged on one side of the fourth conductive strip line, such as Figure 16 The upper side or lower side shown in FIG. (c) is not specifically limited. Figure 16The sliding medium and embedded conductors shown in Figure (c) are merely exemplary illustrations for the sake of illustration. The number, position, shape, and size of the embedded conductors embedded in the sliding medium can be adjusted based on actual needs. For example, at least two embedded conductors can be embedded simultaneously in the sliding medium to enable standing wave detection of at least two feeder links in a single sliding operation. This application will not further elaborate on these details.

[0157] Structure Three

[0158] In another specific structural design, Figure 17 The following is a schematic structural diagram of another feeding detection unit provided in four examples of the present application, wherein: Figure 17 Figure (a) shows a top view of the feed detection unit when the feed line is in an impedance mismatch state. Figure 17 Figure (b) shows a top view of the feed detection unit when the feed line is in normal working state. Figure 17 Figure (c) shows a side view of the feed detection unit. Figure 17 As shown, in this example, the feeding detection unit may further include a second cavity, and the first feeding point B1 and the second feeding point B2 may be arranged side by side on the outside of the same side of the second cavity in the manner shown in (a) or (b) of Figure 17. The fourth conductive strip line and the conductor component may be arranged inside the second cavity. The second cavity may be set as a conductive structure, and the conductor component is connected to the second cavity by electrical connection or coupling to couple the ground circuit.

[0159] Continue to refer to Figure 17 As shown, the feed detection unit may further include a third PCB, a fourth PCB, and a second slide. A slide groove may be provided on the inner side wall of the second cavity, and the third PCB is fixed in position by snapping into the slide groove. The fourth conductive strip line may be provided on the surface of the third PCB relative to the conductor component, and the conductor component may be provided on the surface of the fourth PCB relative to the third conductive strip line. The second slide can be provided on the surface of the third PCB relative to the conductor component, or on the surface of the second cavity relative to the third PCB, without specific limitation.

[0160] Figure 18 The structural diagram of the third PCB and the fourth PCB corresponding to this structural design is shown as an example, wherein: Figure 18 Figure (a) shows a top view of the third PCB. Figure 18 Figure (b) shows a top view of the fourth PCB. Figure 18As shown in Figure (a), in this example, the fourth conductive strip line is in an arched structure on the third PCB, one end (I1) of the arched structure is connected to the first feeding point B1, and the other end (I2) of the arched structure is connected to the second feeding point B2, so as to connect the first feeding point B1 and the second feeding point B2. The second slide can be set on the side of the third PCB opposite to the conductor component. And, considering that the second transmission component is generally arranged according to Figure 18 The driving force is applied to the fourth PCB in the left and right directions as shown in FIG. (a), so the sliding direction of the second slide can be set as follows Figure 18 Thus, when the second controller controls the second transmission component to apply the following to the fourth PCB: Figure 18 When the driving force in the left and right directions is applied as shown in FIG. (a), the fourth PCB can achieve the following under the reaction force given by the second slideway: Figure 18 The sliding in the up and down direction is shown in Figure (a). Figure 18 As shown in FIG. 5( b ), in this example, the conductor component may be a fifth conductive strip line, and the fifth conductive strip line is laid flat inside the fourth PCB, such as a rectangle surrounding the inside of the fourth PCB.

[0161] Continue to refer to Figure 17 and Figure 18 As shown, when it is necessary to detect the feeder connection between the first feeding point B1 and the second feeding point B2:

[0162] The second controller may first control the second transmission component to apply Figure 17 The leftward force shown in FIG. (a) is such that the fourth PCB drives the fifth conductive strip line along the second slideway in a direction away from the fourth conductive strip line under the reaction force of the second slideway (i.e. Figure 17 (a) in the figure) until the fifth conductive strip line in the fourth PCB does not contact the fourth conductive strip line, and then the sliding of the fourth PCB is stopped, as shown in FIG. Figure 17 As shown in Figure (b) in FIG. In this case, since the fifth conductive strip line does not contact the fourth conductive strip line, the impedance of the feeder line between the first feeding point B1 and the second feeding point B2 does not change, and the feeder line between the first feeding point B1 and the second feeding point B2 is in normal working condition. The second controller determines the first standing wave ratio of the feeder line between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method. The first standing wave ratio corresponds to the standing wave ratio under normal working condition.

[0163] Afterwards, the second controller can control the second transmission component to apply Figure 17 The rightward force shown in FIG. 2 (b) is such that the fourth PCB drives the fifth conductive strip line along the second slideway in the direction close to the fourth conductive strip line under the reaction force of the second slideway (i.e. Figure 17(b) in the upper right corner of the diagram) until the fifth conductive strip line in the fourth PCB coincides with the fourth conductive strip line, and then the sliding of the fourth PCB is stopped, as shown in FIG. Figure 17 As shown in Figure (a) in . In this case, since the fifth conducting strip line contacts the fourth conducting strip line, the impedance on the feeder between the first feeding point B1 and the second feeding point B2 changes, and the feeder between the first feeding point B1 and the second feeding point B2 switches to an impedance mismatch state. The second controller determines the second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method, and the second standing wave ratio corresponds to the standing wave ratio in the mismatch state. If there is no problem with the feeder connection between the first feeding point B1 and the second feeding point B2, the first standing wave ratio and the second standing wave ratio should theoretically differ greatly. Therefore, if the difference between the first standing wave ratio and the second standing wave ratio is not greater than the preset difference threshold, it means that the feeder connection between B1 and the second feeding point B2 is abnormal, and the second controller can issue a standing wave alarm for the feeder between B1 and the second feeding point B2.

[0164] It should be noted that the above content is only introduced by taking the fourth conductive strip line as an example to be arranged on one side of the third PCB. Figure 18 In other optional embodiments, the fourth conductive line can also be arranged on the third PCB as shown in FIG. Figure 18 The lower side shown in FIG. (c) of FIG. Or the lower side shown in FIG. (c) of FIG. Figure 18 In this case, the fourth PCB can also be composed of two parts arranged on both sides of the third PCB, wherein each part can be provided with a fifth conductive strip line on a side opposite to the third PCB. Figure 18 The fourth PCB and the fifth conductive strip line shown in FIG. (c) are merely exemplary illustrations for the sake of convenience. The number, position, shape, or size of the fourth PCB or the fifth conductive strip line can be adjusted according to actual needs. For example, at least two fifth conductive strip lines (or a larger fifth conductive strip line) can be provided on the fourth PCB at the same time, or at least two fifth conductive strip lines can be provided. Figure 18 The fourth PCB shown is used to implement standing wave detection of at least two feeder links through a single sliding operation, which will not be described in detail in this application.

[0165] Structure 4

[0166] In another specific structural design, Figure 19 The following is a schematic structural diagram of another feeding detection unit provided in the fourth embodiment of the present application, wherein: Figure 19 Figure (a) shows a side view of the feed detection unit when the feed line is in an impedance mismatch state. Figure 19Figure (b) shows a side view of the feed detection unit when the feed line is in normal working state. Figure 19 Figure (c) shows a top view of the feed detection unit. Figure 19 As shown, in this example, the feeding detection unit may further include a second cavity, and the first feeding point B1 and the second feeding point B2 may be arranged side by side on the outside of the same side of the second cavity in the manner shown in FIG. 19 (c). The fourth conductive strip line and the conductor component may be arranged on the inside of the second cavity. The second cavity may also be set as a conductive structure, and the conductor component is connected to the second cavity by electrical connection or coupling to couple the ground circuit.

[0167] Figure 20 The structural diagram of the fourth conductive strip line and the conductor component corresponding to this structural design is shown as an example, wherein: Figure 20 Figure (a) shows a top view of the fourth conductive line. Figure 20 Figure (b) shows a side view of the conductor component. Figure 20 Figure (c) shows a top view of the conductor component. Figure 20 As shown in Figure (a), in this example, the fourth conductive strip line can be set as a bow structure, one end (I1) of the bow structure is connected to the first feeding point B1, and the other end (I2) of the bow structure is connected to the second feeding point B2, so as to connect the first feeding point B1 and the second feeding point B2. Figure 20 Figure (b) and Figure 20 As shown in Figure (c), the conductive component can be a conductor spring. The first end (M1) of the conductor spring is fixedly connected to the second cavity to achieve coupling with the second cavity, and the second end (M2) of the conductor spring is elastic. When the conductor spring is not subjected to force, the second end M2 of the conductor spring does not deform. There is a certain distance between the second end M2 of the conductor spring and the fourth conductive strip line, that is, it does not contact the fourth conductive strip line.

[0168] Continue to refer to Figure 19 and Figure 20 As shown, when it is necessary to detect the feeder connection between the first feeding point B1 and the second feeding point B2:

[0169] The second controller may not apply force to the conductor spring sheet at first. At this time, the second end M2 of the conductor spring sheet does not deform, so the second end M2 of the conductor spring sheet does not contact the fourth conductive strip line. Figure 19As shown in Figure (b) in FIG. In this case, because the conductive spring does not contact the fourth conductive strip line, the impedance of the feeder between the first feeding point B1 and the second feeding point B2 does not change, and the feeder between the first feeding point B1 and the second feeding point B2 is in normal operating condition. The second controller determines a first standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method. The first standing wave ratio corresponds to the standing wave ratio under normal operating conditions.

[0170] Afterwards, the second controller can control the second transmission component to apply the second end M2 of the conductor spring. Figure 19 The rightward force shown in FIG. 2 (b) causes the second end M2 of the conductive spring to deform. At this time, the second end M2 of the conductive spring can approach the fourth conductive strip line until it contacts the fourth conductive strip line. Figure 19 As shown in Figure (a) in . In this case, since the conductor spring contacts the fourth conductive strip line, the impedance on the feeder between the first feeding point B1 and the second feeding point B2 changes, and the feeder between the first feeding point B1 and the second feeding point B2 switches to an impedance mismatch state. The second controller determines the second standing wave ratio of the feeder between the first feeding point B1 and the second feeding point B2 according to the above-mentioned standing wave detection method, and the second standing wave ratio corresponds to the standing wave ratio in the mismatch state. If there is no problem with the feeder connection between the first feeding point B1 and the second feeding point B2, the first standing wave ratio and the second standing wave ratio should theoretically differ greatly. Therefore, if the difference between the first standing wave ratio and the second standing wave ratio is not greater than the preset difference threshold, it means that the feeder connection between B1 and the second feeding point B2 is abnormal, and the second controller can issue a standing wave alarm for the feeder between B1 and the second feeding point B2.

[0171] It should be noted that the above content is only introduced by taking the example of setting the conductor spring on one side of the fourth conductive strip line. Figure 19 In other optional embodiments, the conductive springs may also be arranged on both sides of the fourth conductive strip line, such as Figure 19 Alternatively, it may be provided only on the fourth conductive strip line as shown in FIG. Figure 19 The lower side shown in (a) or (b) is not specifically limited. Figure 19The conductor springs shown are merely an exemplary illustration for the convenience of introducing the solution. The number, position, shape, or size of the conductor springs can be adjusted according to actual needs. For example, when there are multiple feeder links, the feed detection unit can also include multiple conductor springs. By utilizing the deformation ability of the multiple conductor springs, the multiple conductor springs can be controlled to contact or not contact the corresponding fourth conductive strip lines to achieve detection of multiple feeder links. Alternatively, the feed detection unit can also include a conductor spring that can cover at least two fourth conductive strip lines. The deformation ability of the larger conductor spring can also achieve detection of multiple feeder links. This application will not elaborate on this one by one.

[0172] It should be noted that the feed detection unit introduced in the above embodiments of the present application can be integrated with a feeding component in the feeding network on the same physical unit, or can be set on different physical units with each feeding component in the feeding network. This application does not make specific limitations on this.

[0173] It should be understood that the various components in the above embodiments of the present application are functional devices, and the present application does not limit the specific implementation methods of these functional components. For example, in the above embodiments, when the feed detection unit does not include a cavity, the various conductive strip lines in the feed detection unit can be implemented as microstrip lines. When the feed detection unit includes a cavity, the various conductive strip lines in the feed detection unit can be implemented as suspended strip lines or sheet metal strip lines. Alternatively, the various conductive strip lines in the feed detection unit can also be implemented as other devices with conductive functions, without specific limitation.

[0174] The second embodiment described above switches the feeder link to an abnormal operating state by controlling the feeder link disconnection through mechanical transmission. The third embodiment described above switches the feeder link to an abnormal operating state by controlling the feeder link disconnection through electrical signal conduction. The fourth embodiment described above switches the feeder link to an abnormal operating state by controlling the feeder link impedance mismatch through mechanical transmission. It should be noted that the second to fourth embodiments described above are merely exemplary examples of several specific structures of feed detection units capable of achieving disconnection or impedance mismatch. This application does not limit the feed detection unit to only this structure. Any feed detection unit that can control feeder link disconnection or impedance mismatch is within the scope of protection of this application. Moreover, in other optional embodiments, in addition to controlling the feed link to switch to an abnormal working state by disconnection and impedance mismatch, the feed detection unit can also control the feed link to switch to an abnormal working state by short-circuiting. For example, the feed detection unit can also include a wire with very strong reflection ability and a switch component arranged on the wire, one end of the wire is connected to the first feeding point, and the other end of the wire is connected to the second feeding point. When it is necessary to switch to an abnormal working state, the feed detection unit can turn on the switch component to reflect all or most of the signals in the feeder to other locations by short-circuiting the feeder between the first feeding point and the second feeding point, so as to switch the feeder to an abnormal working state by changing the feeder impedance. There are many optional implementation methods, and this application will not repeat them one by one.

[0175] It should be understood that the related designs in the above embodiments of the present application can also be combined with each other to form new embodiments.

[0176] Based on the same inventive concept, an embodiment of the present application also provides a base station antenna, comprising an antenna port, an antenna array, and a feed network provided in an embodiment of the present application, wherein a first end of the feed network is connected to the antenna port, and a second end of the feed network is connected to the antenna array. The feed network is configured to, under normal operating conditions, feed a transmit signal from the antenna port and then send it to the antenna array, or feed a receive signal from the antenna array and then send it to the antenna port. The antenna array is configured to radiate the transmit signal after the feed processing, or receive a receive signal and send it to the feed network.

[0177] Based on the same inventive concept, an embodiment of the present application also provides a base station device, including the base station antenna provided in an embodiment of the present application, and one or more transceivers, wherein the one or more transceivers can be respectively connected one by one to multiple antenna ports in the base station antenna.

[0178] Exemplarily, the transceiver in the base station device may be a remote radio frequency unit.

[0179] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disc (SSD)).

[0180] As used in this specification, the terms "component," "module," "system," and the like are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside in a process and / or an execution thread, and a component can be located on one computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures stored thereon. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component across a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).

[0181] Those skilled in the art will appreciate that the various illustrative logical blocks and steps described in conjunction with the embodiments disclosed herein can be implemented using electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0182] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0183] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0184] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0185] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0186] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling 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 each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0187] Although some possible embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the embodiments of the present application and all changes and modifications that fall within the scope of the present application.

[0188] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A feeding network, characterized in that: The invention comprises a first feeding point, a second feeding point and a feeding detection unit, wherein the first feeding point and the second feeding point are located in the same feeding link, the first feeding point is connected to the first end of the feeding detection unit, and the second feeding point is connected to the second end of the feeding detection unit; The feed detection unit is used to: When the feeder link is in a preset working state, obtaining a first electrical signal at the first feeding point and a second electrical signal at the second feeding point, determining a standing wave ratio of the feeder link based on the first electrical signal and the second electrical signal, and determining that the feeder link connection is abnormal when the standing wave ratio does not match the standing wave ratio corresponding to the preset working state; Among them, the preset working state is a normal working state or an abnormal working state, the standing wave ratio corresponding to the normal working state is less than a preset standing wave ratio threshold, and the standing wave ratio corresponding to the abnormal working state is not less than the preset standing wave ratio threshold.

2. The feed network according to claim 1, wherein: The first end of the feed detection unit corresponds to the first feed point, and the second end of the feed detection unit corresponds to the second feed point; The feed detection unit is further configured to: Before acquiring the first electrical signal at the first feeding point and the second electrical signal at the second feeding point, controlling the feeder link to be in a preset working state; After determining the standing wave ratio of the feeder link according to the first electrical signal and the second electrical signal, if the standing wave ratio matches the standing wave ratio corresponding to the preset working state, determining that the feeder link is connected normally; When it is determined that the feeder link is connected normally, the feeder link is controlled to be in a normal working state.

3. The feed network according to claim 1, wherein: The abnormal working state includes an open circuit state, a mismatch state or a short circuit state.

4. The feeding network according to claim 2 or 3, characterized in that The feeding detection unit includes a first controller, a first transmission component, a first conductive strip line, a second conductive strip line, and a third conductive strip line; the first conductive strip line is connected to the first feeding point, the second conductive strip line is connected to the second feeding point, and the first conductive strip line and the second conductive strip line are not in contact; the first transmission component is connected to the first controller and the third conductive strip line respectively; The first controller is configured to: When the feeder link needs to be controlled to be in a normal working state, the first transmission component is controlled to drive the third conductive strip line to move to a first position, and when the third conductive strip line is located at the first position, the third conductive strip line contacts the first conductive strip line and the second conductive strip line respectively; or When it is necessary to control the feeder link to be in an abnormal working state, the first transmission component is controlled to drive the third conductive line to move to a second position. When the third conductive line is located at the second position, the third conductive line does not contact the first conductive line and / or does not contact the second conductive line.

5. The feed network according to claim 4, characterized in that The feeding detection unit also includes a first cavity, the first feeding point and the second feeding point are symmetrically arranged outside two opposite side surfaces of the first cavity, and the first conducting strip line, the second conducting strip line and the third conducting strip line are located in the first cavity.

6. The feeding network according to claim 5, characterized in that The power feeding detection unit further includes a first printed circuit board (PCB) and a second PCB arranged opposite to each other, and a first slideway, wherein the first PCB is engaged in the first cavity, the first slideway is located on a surface of the first cavity opposite to the first PCB, or on a surface of the first PCB opposite to the second PCB, and the second PCB slides along the first slideway; The first conductive strip line and the second conductive strip line are located on a surface of the first PCB opposite to the second PCB, and the third conductive strip line is located on a surface of the second PCB opposite to the first PCB; The first controller is specifically configured to: The first transmission component is controlled to drive the second PCB to slide along the first slideway, so as to drive the third guide wire on the second PCB to slide to the first position or the second position.

7. The feeding network according to claim 6, characterized in that The feeding network includes K first feeding points and K second feeding points respectively located in K feeding links, the feeding detection unit includes K first conductive strip lines and K second conductive strip lines located on the first PCB, and M third conductive strip lines located on the second PCB, the K first conductive strip lines are respectively connected to the K first feeding points, and the K second conductive strip lines are respectively connected to the K second feeding points; K and M are positive integers greater than or equal to 2; The first controller is further configured to: Controlling the first transmission component to drive the second PCB to slide along the first slideway so that L third conductive strip lines among the M third conductive strip lines are in contact with L first conductive strip lines among the K first conductive strip lines and L second conductive strip lines among the K second conductive strip lines, respectively, and calculating first standing wave ratios of L feeder links corresponding to the L first conductive strip lines and L second conductive strip lines in contact; L is a positive integer less than or equal to M; controlling the first transmission component to drive the second PCB to slide along the first slideway so that the L third conductive strip lines do not contact the L first conductive strip lines or the L second conductive strip lines, and calculating a second standing wave ratio of the L feeder links; When the difference between the first standing wave ratio and the second standing wave ratio is not greater than a preset difference threshold, it is determined that the L feeder links are abnormally connected.

8. The feeding network according to claim 2 or 3, characterized in that The feeding detection unit includes a second controller, a second transmission component, a fourth conductive strip line and a conductor component; the fourth conductive strip line connects the first feeding point and the second feeding point, and the conductor component is coupled to a ground circuit; the second transmission component is respectively connected to the second controller and the conductor component; The second controller is configured to: When the feeder link needs to be controlled to be in a normal working state, the second transmission component is controlled to drive the conductor component to move to a third position, and when the conductor component is located at the third position, the conductor component does not contact the fourth conductive strip line; or When the feeder link needs to be controlled to be in an abnormal working state, the second transmission component is controlled to drive the conductor component to move to a fourth position. When the conductor component is located at the fourth position, the conductor component contacts the fourth conductive strip line.

9. The feed network according to claim 8, characterized in that The feed detection unit further includes a second cavity, and the conductor component is coupled to the ground circuit by coupling to the second cavity.

10. The feed network according to claim 9, characterized in that The feeding detection unit further includes a third PCB, the third PCB is engaged in the second cavity, and the fourth conductive strip line is located on a surface of the third PCB opposite to the conductor component.

11. The feeding network according to claim 9 or 10, characterized in that The conductor component is a conductor spring, a first end of the conductor spring is coupled to the second cavity, and a second end of the conductor spring is suspended on a side of the fourth conductive strip line opposite to the conductor spring; When the second transmission component drives the conductor component to move toward the fourth position, the second end of the conductor spring is deformed to contact the fourth conductive strip line.

12. The feed network according to claim 10, wherein: The feed detection unit further includes a second slide, the second slide being located on a surface of the second cavity opposite to the third PCB, or on a surface of the third PCB opposite to the conductor component; The conductor component is a sliding conductor, and the sliding conductor slides along the second slideway to the third position or the fourth position; or The feed detection unit further includes a sliding medium, one end of the conductor component is embedded in the sliding medium, and the sliding medium slides along the second slideway to drive the conductor component embedded in the sliding medium to move to the third position or the fourth position; or The feed detection unit also includes a fourth PCB, the conductor component is a fifth conductive strip line, the fifth conductive strip line is laid flat inside the fourth PCB, and the fourth PCB slides along the second slide to drive the fifth conductive strip line laid flat in the fourth PCB to move to the third position or the fourth position.

13. The feed network according to claim 8, wherein The feeding network includes P first feeding points and P second feeding points respectively located in P feeding links, and the feeding detection unit includes P fourth conductive strip lines and P conductor components, and the P fourth conductive strip lines are respectively connected to the P first feeding points and the P second feeding points; P is a positive integer greater than or equal to 2; The second controller is further configured to: controlling the second transmission component to respectively drive Q of the P conductor components to move so that the Q conductor components do not contact Q of the P fourth conductor strip lines, and calculating third standing wave ratios of Q feeder links corresponding to the Q fourth conductor strip lines; where Q is a positive integer less than or equal to P; controlling the second transmission component to respectively drive the Q conductor components to move so that the Q conductor components contact the Q fourth conductive strip lines, and calculating a fourth standing wave ratio of the Q feed links; When the difference between the third standing wave ratio and the fourth standing wave ratio is not greater than the preset difference threshold, it is determined that the Q feeder links are abnormally connected.

14. The feeding network according to claim 2 or 3, characterized in that The feed detection unit includes a third controller and a switch unit, wherein a first electrode of the switch unit is connected to the first feed point, a second electrode of the switch unit is connected to the second feed point, and a control electrode of the switch unit is connected to the third controller; The third controller is configured to: When it is necessary to control the feed link to be in a normal working state, turning on the first electrode and the second electrode of the switch unit; or, When it is necessary to control the feeder link to be in an abnormal working state, the first electrode and the second electrode of the switch unit are disconnected.

15. A base station antenna, characterized in that: comprising an antenna port, an antenna array, and a feeding network according to any one of claims 1 to 14; a first end of the feeding network being connected to the antenna port, and a second end of the feeding network being connected to the antenna array; The feeding network is configured to feed a transmission signal from the antenna port and then send it to the antenna array under normal working conditions, or to feed a reception signal from the antenna array and then send it to the antenna port under normal working conditions; The antenna array is used to radiate the transmission signal after feeding processing, or send the received signal to the feeding network after receiving it.

16. A base station device, characterized in that: comprising one or more transceivers and a base station antenna as claimed in claim 15; The one or more transceivers are connected to the base station antenna.

17. The base station device according to claim 16, wherein: The transceiver is a remote radio frequency unit.

Images