Power synthesis device with switching function

Abstract

The invention relates to a power synthesis device with a switching function, and belongs to the technical field of power synthesis. A controller is in communication connection with a coaxial switch, the coaxial switch is connected with a second bridge, one end of the coaxial switch is connected with an absorption load, and the other end of the coaxial switch is connected with a phase modulator; the controller is used for sending a first switching instruction to the coaxial switch according to a function judgment result of the power amplifier unit, and the coaxial switch is used for switching a transmission path of an amplified signal according to the first switching instruction; the phase modulator is used for adjusting the phase of the received amplified signal to obtain an output signal; and the second bridge is used for inputting half power of the received single amplified signal into the phase modulator to obtain an output signal (1 / 2P), and forming the output signal and the original amplified signal (1 / 2P) with the other half power into a single-power output signal to be output together. According to the invention, the transmission path of the signal is switched according to the function judgment result, so that the problem that the output power of the power synthesis device is relatively low when a certain power amplifier unit fails is solved.

Description

Technical Field

[0001] The present application relates to the technical field of power synthesis, and in particular to a power synthesis device with a switching function. Background Art

[0002] With the widespread popularity of all-solid-state amplifiers, the construction of high-power amplifier systems usually requires combining multiple amplifier boards into amplifier units, and then multiple amplifier units form the entire machine. In terms of power synthesis, the common power synthesis method is to synthesize the output power P of N amplifiers into NP power. The currently commonly used method is as follows: Figure 1 As shown, a (two-amplifier) ​​power synthesis component composed of two power amplifier units.

[0003] However, the above-mentioned power synthesis method has a great defect when one of the power amplifier synthesis units in the system is abnormal (i.e., no output). In an N power synthesis system, when one of the N power amplifier units has no output, the final output power of the power synthesis system is not the expected (N-1)P power, but (N-1) square / N square P; for example, when one of the power amplifier units in the two power amplifier synthesis system (i.e., N=2) is abnormal, the final actual power of the two power synthesis system is only 1 / 4P, which is not only far lower than the expected 2P, but even half of the output power of a single power amplifier. In this case, if the effective output of the P power of the normal power amplifier unit is to be guaranteed to avoid resource waste, it is currently mainly dependent on manually disassembling the synthesizer (i.e., the second bridge) and directly connecting the power amplifier unit that can output normally to the output port after the synthesizer (i.e., the amplified signal emitted by the normal power amplifier skips the signal synthesis step and is directly output) to achieve the P power output of the single power amplifier unit. The whole process is cumbersome and inefficient, which seriously affects the stable operation and efficient use of the high-power power amplifier system. Summary of the invention

[0004] In order to improve the stable operation and efficient use of a power synthesis system when a certain power amplifier unit is abnormal, the present application provides a power synthesis device with a switching function.

[0005] In a first aspect, the present application provides a power synthesis device with a switching function, which adopts the following technical solution: A power synthesis device with a switching function, comprising a power synthesis component, wherein the power synthesis component comprises a second bridge and a power amplifier unit group, wherein the power amplifier unit group comprises two power amplifier units; the power synthesis device further comprises a controller, a phase modulator and a coaxial switch, wherein the controller is communicatively connected to the coaxial switch, an input end of the coaxial switch is connected to an output end of the second bridge, one output end of the coaxial switch is connected to an absorption load, and the other output end is connected to the phase modulator; the controller is used to obtain a function determination result according to an amplified signal sent by each of the power amplifier units, and send a first switching instruction to the coaxial switch according to the function determination result, wherein the first switching instruction is one of connecting to the absorption load and connecting to the phase modulator; The coaxial switch is used to switch the transmission path of the amplified signal according to the first switching instruction; the phase modulator is used to adjust the phase of the received half-power amplified signal to obtain an output signal; when the first switching instruction is connected to the phase modulator, the second bridge is used to input half the power of the received single amplified signal into the phase modulator to obtain a half-power output signal, and directly use the other half-power amplified signal as a half-power output signal; the second bridge is also used to output the single-power output signal after the two half-power output signals form a single-power output signal; the absorption load is used to protect the power synthesis device by absorbing the unbalanced power in the transmission path.

[0006] By adopting the above technical solution, when an abnormal situation occurs in a power amplifier unit in the system, the controller can respond quickly, accurately determine the working state of the power amplifier unit according to the signal characteristics of the amplified signal, and issue the first switching instruction in time; for example, if a power amplifier unit fails and the amplified signal has power fluctuations, at the moment of the abnormality, the coaxial switch is connected to the absorption load, and the abnormal power generated in the entire power synthesis device (i.e., the synthesized 1 / 4P and the possible instantaneous high power) will be absorbed by the absorption load, so as to avoid the fault signal from affecting the entire power synthesis device; Then, the controller will detect the abnormal situation and immediately switch the coaxial switch to connect with the phase modulator. At this time, since the second bridge can only receive an amplified signal from a normally working power amplifier unit, the electric field and magnetic field inside the second bridge will change accordingly, thereby putting the second bridge in a pass-through mode (i.e., stopping the signal synthesis operation); then, the power of the amplified signal from the normal power amplifier unit will be divided into two: half of the power signal will be directly used as an output signal inside the second bridge, and its power value is 1 / 2P (assuming that the original output power of a normal power amplifier unit is P); and the other half of the power amplified signal will be transmitted to the phase modulator. After the phase modulator completes the precise phase adjustment of this part of the signal, another output signal is obtained, and its power value is 1 / 2P, and the other output signal will return to the second bridge again; finally, the two 1 / 2P output signals are reconverged in the second bridge to form an output signal (power is P) equivalent to the single power of a single normal power amplifier unit, and are directly output through the output port of the second bridge; Compared with traditional power synthesis devices, the power synthesis device of the present application can realize autonomous switching when an abnormality occurs in one power amplifier unit, without the need for manual disassembly and reorganization, and makes up for the defect that the second bridge can only output 1 / 4P power in this case. The whole process is highly timely and easy to operate, which greatly improves the stable operation and efficient use of the two-power amplifier synthesis device.

[0007] In a specific possible implementation mode, the two power amplifier units are connected in a plug-in manner.

[0008] By adopting the above technical scheme, the connection between the power amplifier units is more convenient and efficient. The plug-in connection is similar to modular splicing. During the equipment assembly and maintenance process, the technician only needs to accurately insert the power amplifier unit along the specific slot track to quickly complete the connection operation, which greatly shortens the equipment assembly time and maintenance and replacement time, reduces the risk of human error that may be introduced due to cumbersome connection operations, and improves the overall work efficiency and connection reliability; at the same time, compared with the traditional connection method, the plug-in connection method helps the power amplifier synthesis device of the present application to maintain a stable and reliable operating state when repairing abnormal power amplifier units. It is particularly suitable for occasions with high requirements on the convenience and reliability of equipment installation and maintenance, such as the rapid deployment of mobile communication base stations, emergency repair of military communication equipment and other fields, which greatly improves the practicality and adaptability of the equipment, and provides strong support for the efficient and stable operation of related systems.

[0009] In a specific implementation scheme, the function determination result corresponds to each of the power amplifier units, and the function determination result includes one of normal function and abnormal function; the controller obtains the function determination result according to the amplified signal after passing through the coaxial switch, specifically including: After each amplified signal is received, detecting the actual power of the amplified signal; Comparing each of the actual powers with a preset normal power threshold; If the actual power is lower than the normal power threshold, the function determination result of the power amplifier unit corresponding to the amplified signal is abnormal function.

[0010] In a specific implementation manner, before the controller issues a switching instruction to the coaxial switch according to the function determination result, the process further includes: When the function determination result is a function abnormality, the first switching instruction is connected to the phase modulator, and the controller uses the power amplifier unit corresponding to the function determination result as an abnormal power amplifier unit and the other power amplifier unit as a normal power amplifier unit, and sends a shutdown instruction to the abnormal power amplifier unit to control the abnormal power amplifier unit to shut down. At this time, the second bridge can only receive the amplified signal sent by the normal power amplifier unit.

[0011] By adopting the above technical solution, the controller can accurately and efficiently monitor and determine the working status of the power amplifier unit in real time, thereby ensuring the stable operation and reliable performance of the entire power synthesis device.

[0012] In a specific implementation scheme, when both of the function determination results are normal, the first switching instruction is to connect to the absorption load, at which time the coaxial switch remains connected to the absorption load, and the second bridge synthesizes the two received amplified signals to obtain an output signal for output; When there is a function judgment result that is a function abnormality, the first switching instruction is to connect to the phase modulator. At this time, the coaxial switch is switched to connect to the phase modulator, and the second bridge directly outputs the half-power amplified signal of the amplified signal emitted by the normal power amplifier unit to obtain a half-power output signal, and the other half-power amplified signal is output to the phase modulator through the second bridge and the coaxial switch in sequence. After the phase modulator phase-modulates the amplified signal to obtain a half-power output signal, the half-power output signal returns to the second bridge along the original path and is combined with the other half-power output signal to form a single-power output signal for direct output.

[0013] In a specific feasible implementation scheme, the phase modulator is communicatively connected to the controller, and the controller pre-stores a number of optimal phase values ​​corresponding to different address codes, and different address codes correspond to different signal frequencies one by one; the controller is also used to determine the standard address code according to the signal frequency of the received amplified signal, and generate a control signal based on the optimal phase value corresponding to the standard address code, and then send the control signal to the phase modulator, the control signal carrying the optimal phase value; the phase modulator is used to adjust the phase of the amplified signal according to the optimal phase value in the control signal to obtain an output signal.

[0014] In a specific implementation scheme, the phase modulator includes a third bridge and a varactor diode; the phase modulator adjusts the phase of the amplified signal to the optimal phase value by changing the voltage across the varactor diode.

[0015] By adopting the above technical solution, for the received unsynthesized amplified signal, the phase modulator can accurately adjust its phase according to the instructions of the controller. Signals of different frequencies have different phase characteristics during transmission. Through the correspondence between the signal frequency and the optimal phase value pre-stored in the controller, the phase modulator can perform personalized phase adjustment for each signal, so that each signal can achieve the best matching state in phase. This precise phase control significantly reduces the insertion loss of the signal during the synthesis process, improves the transmission efficiency and quality of the signal, reduces signal distortion and attenuation, makes the output signal purer and more stable, and greatly improves the performance of the entire power synthesis device.

[0016] In a specific feasible implementation scheme, the controller is provided with an external communication interface, and the controller is also used to receive a remote control instruction issued by a user through the external communication interface, and the remote control instruction is the first switching instruction; the controller is also used to send the first switching instruction to the coaxial switch after receiving the first switching instruction.

[0017] By adopting the above-mentioned technical scheme and relying on the key channel of the external communication interface, the power synthesis device of the present application realizes the remote control function, which greatly expands the operability and flexibility of the power synthesis device, and helps the user to make corresponding adjustments to the connection object of the coaxial switch output end through the corresponding remote control terminal (such as a remote monitoring system, mobile control software, etc.), so that the device can restore normal power synthesis and output functions. No disassembly and assembly operations are required throughout the process, which greatly improves the operating stability of the power synthesis device.

[0018] In a specific implementation scheme, there are a plurality of power amplifier unit groups, and the number of all the power amplifier unit groups is a multiple of 2.

[0019] In a specific possible implementation manner, each of the power amplifier unit groups is connected in a cascade manner.

[0020] By adopting the above technical solution, the cascade structure allows the number of power amplifier unit groups to be easily increased or decreased according to actual needs; when faced with different application scenarios and power requirements, the system configuration can be flexibly adjusted to easily achieve power upgrade or downgrade; for example, in small indoor communication equipment, only a small number of cascaded power amplifier unit groups may be needed to meet the signal coverage requirements within a limited range; and in large outdoor communication base stations or radio and television transmission towers and other occasions, the overall power output capacity of the system can be rapidly improved by increasing the number of cascaded power amplifier unit groups to cover a wider area and meet the communication needs of a large number of users online at the same time; greatly improving the versatility and adaptability of the equipment.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application adds a switching function to the existing power synthesis device. When a power amplifier unit in the power synthesis device is abnormal, the transmission path of the amplified signal emitted by the normal power amplifier unit is changed (i.e., the connection between the second bridge and the absorption load is disconnected) without manually disassembling the synthesis device and reconnecting the power amplifier unit connection mode, so that the second bridge is directly connected to the phase modulator. At this time, in the amplified signal emitted by a single normal power amplifier unit, the amplified signal of half power will be directly used as an output signal of half power in the second bridge, and the amplified signal of the other half power will first adjust the phase through the phase modulator to obtain another output signal of half power, and then return to the second bridge to form a single power output signal together with the half power output signal obtained before, and finally complete the output. In this way, the present application realizes the P power output of a normal single power amplifier unit, greatly improves the stable operation and efficient use of the high-power power amplifier system, solves the problem that the power synthesis device does not output power according to (N-1)P when a power amplifier unit is in an abnormal working state, and converts a large amount of useless power originally output to the absorption load into useful power, thereby improving the power synthesis efficiency; 2. At the same time, when the maintenance personnel disassemble and replace the abnormal power amplifier unit, since the power amplifier units of the present application are cascaded, the disassembly operation will not interrupt the normal operation of the power synthesis device. In addition, when the maintenance personnel replace the abnormal power amplifier unit, the power synthesis device of the present application can also detect and restore the normal power amplifier unit according to the function determination result of the power amplifier unit, switch the working state of the second bridge back to the synthesis mode, and switch the coaxial switch back to the connection with the absorption load. The whole process is automatic and intelligent, easy to operate and easy to implement, which greatly reduces manpower and material resources; 3. By setting a phase modulator and pre-storing the optimal phase value corresponding to the address code of different signal frequencies in the controller, it is helpful for the power synthesis device of the present application to adjust the phase of the half-power amplified signal entering the phase modulator to the optimal value when half of the power of the amplified signal emitted by the remaining normal power amplifier unit enters the second bridge and the other half of the power enters the phase modulator when there is an abnormal power amplifier unit, so that it can form a complete single power output signal with the other half of the power amplified signal in the second bridge. This method can automatically respond to the issuance of the first switching instruction, no longer requires manual intervention, and greatly improves the power synthesis efficiency; 4. By setting up an external communication interface, users can remotely control and debug the power synthesis device in real time, which greatly reduces the user's workload and ensures the timeliness of the power synthesis device in receiving temporary instructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of a conventional (two-power amplifier) ​​power synthesis component in the background technology used in this application.

[0023] Figure 2 It is a structural schematic diagram of a power synthesis device with switching function according to an embodiment of the present application.

[0024] Figure 3 4 is a circuit diagram of a phase modulator according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0026] The following is a further detailed description of an embodiment of a power synthesis device with a switching function of the present application in conjunction with all the drawings in the specification.

[0027] An embodiment of the present application discloses a power synthesis device with a switching function.

[0028] Reference Figure 1 A power synthesis device with a switching function includes a power synthesis component, the power synthesis component includes a first bridge, a power amplifier unit group, a second bridge and an absorption load connected in sequence, the power amplifier unit group includes two power amplifier units connected in pairs, and the pairing mode of this embodiment takes hot plugging as an example; Among them, the first bridge and the second bridge are microstrip or suspension line types, which is the prior art and will not be described in detail here. The first bridge is directly connected to the signal source, and the signal source can be a source that requires signal power synthesis, such as a radio frequency signal generator, a front-stage signal processing circuit, an antenna receiving link, etc.; the first bridge is used to receive an input signal from the signal source, and distribute the input signal to each power amplifier unit in the power amplifier unit group with equal power; each power amplifier unit is used to receive one of all input signals sent by the first bridge, and power amplify the corresponding input signal to obtain an amplified signal; the second bridge is used to receive the amplified signals sent by all power amplifier units, and synthesize all the amplified signals to obtain an output signal to complete the power output; specifically, the first bridge and the second bridge of this embodiment are both taken as 3dB orthogonal bridges; the absorption load is used to absorb the unbalanced power in the signal transmission path of the power synthesis device to protect the entire power synthesis device. When the two power amplifier units are working normally, the power absorbed by the absorption load is 0.

[0029] In the current power synthesis device, when one of the power amplifier units fails, the second bridge continues to synthesize the amplified signal output by the normally functioning power amplifier unit, and can only output one-fourth of the power. In addition, when the failure occurs, the coaxial device needs to be manually disassembled to disassemble the failed power amplifier unit, and the connection mode between the normally functioning power amplifier unit and the second bridge needs to be adjusted (so that the normal power amplifier unit is directly connected to the output port of the second bridge), so that the amplified signal output by the normal power amplifier unit in the power synthesis device can skip the signal synthesis step of the second bridge, so that the output signal power finally obtained can reach the single power output that a single power amplifier unit can normally achieve. At the same time, after the failed power amplifier unit is repaired, the coaxial device needs to be manually disassembled again to reinstall the normal power amplifier unit, and the connection mode between the normally functioning power amplifier unit and the second bridge needs to be adjusted back to the original state (so that the output ports of the two normal power amplifier units are connected to the input port of the second bridge), so that the power synthesis device can restore the original double power output. In the above two disassembly processes, the power synthesis device will be forced to interrupt output, and the disassembly steps are relatively cumbersome. Therefore, this embodiment adopts the following settings to improve the technical problem raised by this application: Reference Figure 2, a power synthesis device with switching function also includes a controller, a coaxial switch and a phase modulator; wherein the coaxial switch has an input end and two output ends, the input end of the coaxial switch is connected to the output end of the second bridge, one output end of the coaxial switch is connected to the absorption load, and the other output end is connected to the phase modulator; the controller is in communication connection with the coaxial switch and each power amplifier unit, the controller is used to obtain a function determination result according to the amplified signal sent by the power amplifier unit, and send a first switching instruction to the coaxial switch according to the function determination result, the first switching instruction is one of connecting to the absorption load and connecting to the phase modulator, and the function determination result includes one of normal function and abnormal function; Specifically, the controller obtains the function determination result according to the amplified signal sent by the power amplifier unit in the following steps: S1, after receiving each amplified signal sent by a power amplifier unit, detecting the actual power of the amplified signal; S2, comparing each actual power with a preset normal power threshold; In this embodiment, the normal power threshold is taken as 3dB.

[0030] S3, if the actual power is lower than the normal power threshold, the function determination result of the power amplifier unit corresponding to the amplified signal is abnormal; S4, otherwise, the function determination result of the power amplifier unit corresponding to the amplified signal is that the function is normal.

[0031] It should be noted that the power amplifier unit in this embodiment itself may also have the function of detecting whether the power is normal or not. If the power amplifier unit can detect its own operating condition, the power amplifier unit is also used to obtain a function judgment result based on the actual power of the amplified signal and the preset normal power threshold after each amplified signal is obtained, and the function judgment result is sent to the controller. At this time, the controller is used to directly issue a first switching instruction to the coaxial switch based on the function judgment result.

[0032] Reference Figure 2 The coaxial switch is used to switch the transmission path of the amplified signal according to the first switching instruction. By default, the transmission paths of the two amplified signals are as follows: one amplified signal is generated from the corresponding power amplifier unit, output to the second bridge together with the other amplified signal, synthesized by the second bridge and the other amplified signal to become an output signal, and finally the output of twice the power is completed from the output end of the second circuit; Specifically, before the controller sends a switching instruction to the coaxial switch according to the function determination result, the following steps are also included: When there is a function judgment result that is a function abnormality, the power amplifier unit corresponding to the function judgment result is used as an abnormal power amplifier unit, and the other power amplifier unit is used as a normal power amplifier unit, and a shutdown command is sent to the abnormal power amplifier unit to control the abnormal power amplifier unit to shut down. In this way, the second bridge can only receive the amplified signal sent by the normal power amplifier unit, avoiding the abnormal signal sent by the faulty power amplifier unit from interfering with the power synthesis device.

[0033] It should be noted that when a power amplifier unit fails, the second bridge actually still maintains the synthesis mode and synthesizes an abnormal signal with the normal signal. Therefore, there is a possibility of large instantaneous power. However, since the coaxial switch still maintains the connection with the absorption load at this time, the abnormal power will also be absorbed by the absorption load and will not have a bad impact on the entire power synthesis device. Furthermore, when the abnormal power amplifier unit stops working (ie, turns off), the controller sends a first switching instruction to the coaxial switch according to the function determination result in the following steps and principles: When there is a function judgment result of abnormal function, the first switching instruction is to connect to the phase modulator, and the coaxial switch is switched to connect to the phase modulator in response to the first switching instruction. At this time, half of the power of the amplified signal emitted by the normal power amplifier unit will be obtained through the second bridge in the direct mode to obtain an output signal with half the power, and the amplified signal with the other half of the power will be input into the coaxial switch and the phase modulator in sequence. After the phase modulator adjusts the phase of the amplified signal to obtain an output signal with half the power, the output signal will return to the second bridge along the original path, and be combined with the previous output signal with half the power to form a single-power output signal, and then the second bridge will complete the output. In this process, the second bridge will enter the direct mode because it only receives one amplified signal, and stop synthesizing the amplified signal, that is, it only acts as a passing node in the signal transmission path and directly outputs an output signal with a power of P; The relevant principles are explained as follows: Under ideal circumstances (there is no abnormal power amplifier unit), when two amplified signals are respectively input to the two input ends of the second bridge, the two input signals will be superimposed through a certain interaction between the electric field and the magnetic field after entering the interior of the second bridge to obtain an output signal with double power, and finally the output signal will be output through the output end of the second bridge; in this superposition process, since the phase parameters of the two amplified signals set in advance meet the preset conditions, the electric field and magnetic field generated by the two amplified signals will cancel each other at the input end of the absorption load, so that the output signal power at the input end of the absorption load is zero, and the absorption load will not absorb the power of the output signal, thereby realizing effective power synthesis.

[0034] In the case where there is an abnormal power amplifier unit, that is, only one normal power amplifier unit can output an amplified signal, when only one amplified signal (half the power) from a normal power amplifier unit is input to the input end of the second bridge, half of the power of the amplified signal will be directly output through the second bridge (that is, it will not participate in the signal synthesis work), and the other half of the power will be absorbed by the absorption load, that is, the second bridge and the absorption load will divide the power of the amplified signal equally, resulting in the signal power finally output from the output end of the second bridge being only one quarter of the original total synthesis power; Based on the above, in the presence of an abnormal power amplifier unit, the present application sends a first switching instruction to the coaxial switch so that the coaxial switch disconnects from the absorbing load and connects to the phase modulator instead; when the output signal obtained after the phase of the amplified signal is adjusted in the phase modulator meets specific conditions, the output signal of the second bridge output can maintain the single power under normal conditions without power synthesis.

[0035] When the results of the two functions are both normal, the first switching instruction is to connect to the absorption load. After receiving the first switching instruction, the coaxial switch does not change and remains connected to the absorption load. After receiving the two amplified signals, the second bridge enters the signal synthesis mode, synthesizes the two amplified signals, obtains an output signal with a power of 2P and outputs it.

[0036] It should be noted that, in the case where the last instruction issued to the power amplifier unit is a shutdown instruction, if the controller obtains two normal function determination results again, that is, the technician has completed the repair of the abnormal power amplifier unit and reinstalled it back into the power synthesis device, then the controller of the present application will still issue instructions according to the above logic, that is, issue a first switching instruction to the coaxial switch according to the function determination result; Through the above settings, the entire power synthesis device can be quickly restored to the full-function operation mode, giving full play to its power synthesis advantages, achieving efficient and stable signal output, and meeting the system's performance requirements for power synthesis under normal working conditions. It can ensure that the system can quickly and smoothly switch from the fault response state back to the normal working state, improve the system's overall reliability, stability and adaptability to various changes in working conditions, and ensure that the entire power synthesis system always maintains a good operating state in a complex and changeable working environment.

[0037] It should also be noted that in this embodiment, the plug-in mode of the two power amplifier units is hot-swappable, that is, the removal and installation of one power amplifier unit will not affect the operation of the other power amplifier unit. Therefore, when a power amplifier unit fails, the technician only needs to simply unplug the failed unit and insert a new spare unit, which greatly shortens the maintenance time, improves the availability of the base station, reduces the signal interruption time caused by equipment failure, and ensures the continuity of communication services; In addition, in combination with the above explanation, whenever an abnormality / fault occurs in a single power amplifier unit, the power synthesis device of the present application will not stop outputting power. When the technician removes the abnormal power amplifier unit or installs the repaired abnormal power amplifier unit, it can adjust the most reasonable power output mode according to the operating conditions of the two power amplifier units.

[0038] It should be noted that different signal frequencies correspond to different address codes. The controller of the present application pre-stores a number of optimal phase values ​​corresponding to different address codes, and the phase modulator is communicatively connected to the controller; the controller is also used to determine the standard address code (i.e., the address code corresponding to the signal frequency of the amplified signal) according to the signal frequency of the received amplified signal, and generate a control signal based on the optimal phase value corresponding to the standard address code, and then send the control signal to the phase modulator, wherein the control signal carries the optimal phase value; specifically, the controller in this embodiment takes MUC as an example, and can convert the digital quantity (i.e., the optimal phase value) into an analog level signal (i.e., the control signal) through a built-in D / A converter to control the phase modulator. This is a prior art and will not be repeated here; the phase modulator is used to adjust the phase of the received amplified signal to the optimal phase value after receiving the control signal to obtain an output signal.

[0039] Reference Figure 3 The phase modulator includes a third bridge and a varactor diode. The third bridge of this embodiment also takes a 3dB orthogonal bridge as an example. The third bridge is used to change the voltage across the varactor diode according to the optimal phase value. The varactor diode is used to adjust the phase of the output signal to the optimal phase value by using the physical property that the capacitance value across its two ends changes with the voltage value. Specifically, the step of the phase modulator adjusting the phase of the amplified signal according to the control signal includes: After receiving the control signal, the control signal is analyzed to obtain the optimal phase value (existing technology, no further description is given here); the voltage applied to the two ends of the varactor is changed to the optimal voltage value through the third bridge according to the control signal (the controller will calculate the optimal voltage value corresponding to the optimal phase value according to the preset algorithm and program), and the physical property that the capacitance value at both ends of the varactor changes accordingly with the change of the applied voltage value is utilized, thereby achieving the purpose of adjusting the phase of the amplified signal to the optimal phase value.

[0040] It should be noted that the working mechanism of the phase modulator follows a set of rigorous and efficient logical processes; specifically, the phase modulator can accurately select the signal channels corresponding to different output signals with the help of the address code pre-stored in the controller. In this embodiment, an eight-bit address code switch is taken as an example, and each bit has two states of 0 or 1 to choose from. Through different combinations of these eight bits, a total of 256 independent channels can be represented, thereby providing sufficient possibilities for diversified channel selection; In each channel scenario corresponding to the output signal, after careful debugging of the controller in the early stage, the optimal phase value required by the phase modulator can be determined in advance, thereby achieving the optimal insertion loss and standing wave ratio parameters under the channel, laying a solid foundation for efficient signal transmission; through such an operation process, each channel of the output signal can independently and effectively achieve its optimal phase configuration, thereby achieving an ideal signal transmission effect; since these phase values ​​obtained through pre-debugging are stored in the controller's memory, whenever a specific channel needs to be used, the system can quickly and accurately call the corresponding pre-adjusted phase value from the memory based on the channel identifier set by the address code, thereby realizing the automation, precision and efficiency of the entire phase modulation process, greatly improving the convenience and accuracy of the phase modulator when switching between different channels, and effectively ensuring the stability and reliability of signal transmission.

[0041] It should also be noted that in order to meet the diverse needs of power synthesis components for power synthesis in different application scenarios, the power amplifier unit groups of this embodiment can be flexibly set to have a number of power output capacity, signal processing complexity, system redundancy and other requirements actually required, and each two power amplifier unit groups are connected in a cascade manner; for example, when it is necessary to meet the input requirements of four input signals, two power amplifier unit groups, each including two power amplifier units, will be cascaded and connected, thereby merging into a power synthesis device that supports four-way signal input.

[0042] The cascade connection method in this embodiment is a method of connecting multiple devices or components in sequence, and has different implementation forms in different fields, including but not limited to existing technologies such as amplifier cascade, filter cascade, and digital circuit cascade. Through the cascade connection method, each power amplifier unit group can simultaneously amplify multiple corresponding input signals, and the subsequent power amplifier units can also continue to enhance the signal power on this basis after the previous power amplifier unit preliminarily amplifies the signal, thereby achieving efficient and gradual amplification of the input signal, effectively improving the power output capacity and signal gain of the entire power synthesis device; at the same time, the setting of multiple power amplifier unit groups makes the system more adaptable and scalable. When facing tasks with higher power requirements, the number of power amplifier unit groups can be easily increased, or the existing power amplifier unit groups can be upgraded and optimized, such as replacing power amplifier units with better performance, adjusting the parameters of the cascade connection, etc., to meet the strict requirements of large-scale communication base stations, long-range radar detection systems, etc. for high-power and high-stability signal output.

[0043] In addition, the controller is provided with an external communication interface, and the controller is also used to receive remote control instructions issued by the user through the external communication interface, wherein the remote control instruction is the first switching instruction as described above; the controller is also used to send the first switching instruction to the coaxial switch after receiving the first switching instruction.

[0044] In this way, even if the user is far away from the power synthesis device, he can easily control the operating status of the device; when the user sends an adjustment instruction through a specific control terminal (such as remote monitoring software, mobile application or dedicated remote control panel), the controller can quickly receive the instruction through the external communication interface and pass it to the corresponding device (coaxial switch / abnormal power amplifier unit / phase modulator / second bridge); For example, during equipment maintenance, if it is necessary to check the working condition of each power amplifier unit in the power amplifier unit group separately, or test and troubleshoot some lines, technicians are allowed to monitor and analyze each amplified signal independently without being disturbed by the synthetic signal, which greatly improves the accuracy and efficiency of fault diagnosis and reduces the difficulty and complexity of maintenance.

[0045] On the contrary, when the maintenance work is completed, or the power synthesis device needs to resume full functional operation during normal operation, the controller can also restore to normal working state stably by itself, meeting the needs of power synthesis in actual applications; this remote control function not only enhances the operability and flexibility of the power synthesis device, but also enables it to better adapt to various complex and changeable working scenarios, such as communication base stations distributed in different geographical locations, remote industrial automation control systems, etc., providing strong support for realizing efficient and intelligent remote management and operation and maintenance, and further expanding the application scope and value of the power synthesis device in the field of modern science and technology.

[0046] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0047] A person skilled in the art can understand that all or part of the steps of implementing the above-mentioned embodiments can be completed by hardware, or can be completed by a program to instruct the relevant hardware. The program can be stored in a computer-readable storage medium. The above-mentioned storage medium includes, for example: 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, and other media that can store program codes.

[0048] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power synthesis device with a switching function, comprising a power synthesis component, wherein the power synthesis component comprises a second bridge and a power amplifier unit group, wherein the power amplifier unit group comprises two power amplifier units; characterized in that: The power synthesis device further includes a controller, a phase modulator and a coaxial switch, wherein the controller is in communication connection with the coaxial switch, an input end of the coaxial switch is connected to an output end of the second bridge, one output end of the coaxial switch is connected to an absorption load, and the other output end is connected to the phase modulator; the controller is used to obtain a function determination result according to the amplified signal sent by each power amplifier unit, and send a first switching instruction to the coaxial switch according to the function determination result, wherein the first switching instruction is one of connecting to the absorption load and connecting to the phase modulator; The coaxial switch is used to switch the transmission path of the amplified signal according to the first switching instruction; the phase modulator is used to adjust the phase of the received half-power amplified signal to obtain an output signal; when the first switching instruction is connected to the phase modulator, the second bridge is used to input half the power of the received single amplified signal into the phase modulator to obtain a half-power output signal, and directly use the other half-power amplified signal as a half-power output signal; the second bridge is also used to output the single-power output signal after the two half-power output signals form a single-power output signal; the absorption load is used to protect the power synthesis device by absorbing the unbalanced power in the transmission path.

2. The power synthesis device according to claim 1, characterized in that: The two power amplifier units are connected in a plug-in manner.

3. The power synthesis device according to claim 1, characterized in that: The function determination result corresponds to each of the power amplifier units, and the function determination result includes one of a normal function and an abnormal function; The controller obtains a function determination result according to the amplified signal after passing through the coaxial switch, specifically including: After each amplified signal is received, detecting the actual power of the amplified signal; Comparing each of the actual powers with a preset normal power threshold; If the actual power is lower than the normal power threshold, the function determination result of the power amplifier unit corresponding to the amplified signal is abnormal function.

4. The power synthesis device according to claim 3, characterized in that: Before the controller sends a switching instruction to the coaxial switch according to the function determination result, the method further includes: When the function determination result is a function abnormality, the first switching instruction is connected to the phase modulator, and the controller uses the power amplifier unit corresponding to the function determination result as an abnormal power amplifier unit and the other power amplifier unit as a normal power amplifier unit, and sends a shutdown instruction to the abnormal power amplifier unit to control the abnormal power amplifier unit to shut down. At this time, the second bridge can only receive the amplified signal sent by the normal power amplifier unit.

5. The power synthesis device according to claim 4, characterized in that: When both of the function determination results are normal, the first switching instruction is to connect to the absorption load, at which time the coaxial switch remains connected to the absorption load, and the second bridge synthesizes the two received amplified signals to obtain an output signal for output; When there is a function judgment result that is a function abnormality, the first switching instruction is to connect to the phase modulator. At this time, the coaxial switch is switched to connect to the phase modulator, and the second bridge directly outputs the half-power amplified signal of the amplified signal emitted by the normal power amplifier unit to obtain a half-power output signal, and the other half-power amplified signal is output to the phase modulator through the second bridge and the coaxial switch in sequence. After the phase modulator phase-modulates the amplified signal to obtain a half-power output signal, the half-power output signal returns to the second bridge along the original path and is combined with the other half-power output signal to form a single-power output signal for direct output.

6. The power synthesis device according to claim 5, characterized in that: The phase modulator is communicatively connected to the controller, and the controller pre-stores a number of optimal phase values ​​corresponding to different address codes, and different address codes correspond to different signal frequencies one by one; the controller is also used to determine a standard address code according to the signal frequency of the received amplified signal, and generate a control signal based on the optimal phase value corresponding to the standard address code, and then send the control signal to the phase modulator, the control signal carrying the optimal phase value; the phase modulator is used to adjust the phase of the amplified signal according to the optimal phase value in the control signal to obtain an output signal.

7. The power synthesis device according to claim 6, characterized in that: The phase modulator includes a third bridge and a varactor diode; the phase modulator adjusts the phase of the amplified signal to the optimal phase value by changing the voltage across the varactor diode.

8. The power synthesis device according to claim 1, characterized in that: The controller is provided with an external communication interface, and is also used to receive a remote control instruction issued by a user through the external communication interface, wherein the remote control instruction is the first switching instruction; the controller is also used to send the first switching instruction to the coaxial switch after receiving the first switching instruction.

9. The power synthesis device according to claim 2, characterized in that , there are several power amplifier unit groups, and the number of all the power amplifier unit groups is a multiple of 2.

10. The power synthesis device according to claim 9, characterized in that: Each of the power amplifier unit groups is connected in a cascade manner.

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