Power amplifier debugging system

Abstract

The utility model discloses a power amplifier debugging system, which relates to the technical field of power semiconductors and comprises a debugging table, a test host, a vector network analyzer, a driver, an input impedance tuner, a power amplifier and an output impedance tuner, the input impedance and the output impedance of the power amplifiers of the input impedance tuner and the output impedance tuner are controlled and adjusted through the test host, then a radio frequency signal is transmitted through the vector network analyzer, and the radio frequency signal is amplified through the driver, then is amplified through the input impedance tuner, the power amplifier module and the output impedance tuner in sequence, and finally is transmitted through the power amplifier module. And finally, the output power and the efficiency of the power amplifier corresponding to the input impedance and the output impedance are acquired through the vector network analyzer, so that the debugging efficiency and the debugging accuracy of the power amplifier are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radio frequency microwave communication, in particular to a power amplifier debugging system. Background Art

[0002] In the field of wireless communications, the performance of the power amplifier (PA) has a crucial impact on the efficiency of the overall communication system. For example, the maximum power, efficiency, gain, and linearity of the power amplifier will affect the quality of the final RF signal output. Especially with the application and popularization of 5G communications, these performance requirements for power amplifiers are also higher. The maximum power, efficiency, gain, and linearity of the power amplifier are related to its input load impedance and output load impedance. At the same time, power amplifiers in different frequency bands will also have different optimal input load impedances and output load impedances. Therefore, the impedance of the power amplifier needs to be matched in the early stage of the power amplifier module design.

[0003] In traditional power amplifier design, in order to obtain higher output power and efficiency, the output load impedance and input load impedance of the power amplifier are generally estimated, and then the output power, efficiency, gain and linearity of the power amplifier corresponding to different input load impedances and output load impedances are experimentally tested. However, this debugging process relies on manual experience, lacks precision and is inefficient. Utility Model Content

[0004] The main purpose of the utility model is to provide a power amplifier debugging system, aiming to solve the problems of poor accuracy and low efficiency in existing power amplifier load matching.

[0005] To achieve the above-mentioned purpose, the power amplifier debugging system proposed in the utility model is used to debug the radio frequency performance of the power amplifier, and the power amplifier debugging system includes:

[0006] Debugging station;

[0007] A debugging component, the debugging component is arranged on the debugging platform, and the debugging component comprises: a test host, a vector network analyzer, and a driver, an input impedance adapter, and an output impedance adapter connected in sequence; the output port of the vector network analyzer is connected to the input port of the driver, and the input port of the vector network analyzer is connected to the output port of the output impedance adapter; the input port of the power amplifier is connected to the output port of the input impedance adapter, and the output port of the power amplifier is connected to the input port of the output impedance adapter; the test host is in communication connection with the vector network analyzer, the input impedance adapter, and the output impedance adapter;

[0008] The vector network analyzer is used to provide an RF signal source for debugging the power amplifier. The driver receives the RF signal of the vector network analyzer and amplifies the RF signal to the power required by the power amplifier. The input impedance adjuster receives the RF signal after the driver amplifies the power and transmits it to the power amplifier. After the RF signal is amplified by the power amplifier, it is sent to the vector network analyzer through the output impedance adjuster. The vector network analyzer collects test data after the power amplifier outputs and sends it to the test host. The test host receives the test data collected by the vector network analyzer, and controls and adjusts the resistance values ​​of the input impedance adjuster and the output impedance adjuster through the test host according to the test data to adjust the input impedance and output impedance of the power amplifier to obtain better RF performance of the power amplifier.

[0009] In one embodiment of the utility model, the power amplifier debugging system further includes a first bias circuit, a second bias circuit and two DC power supplies;

[0010] The first bias circuit and the second bias circuit are both provided with an RF input port, a DC input port and an RF DC output port. The RF input port, the DC input port and one of the RF DC output ports of the first bias circuit are respectively connected to the output port of the input impedance adjuster, the DC power supply and the input port of the power amplifier. The RF input port, the DC input port and the RF DC output port of the second bias circuit are respectively connected to the output port of the power amplifier, another of the DC power supply and the input port of the output impedance adjuster.

[0011] In one embodiment of the present invention, the power amplifier debugging system further includes an attenuator, the input port of the attenuator is connected to the output port of the output impedance adjuster, and the output port of the attenuator is connected to the input port of the vector network analyzer.

[0012] In an embodiment of the present invention, the power amplifier debugging system further includes a power meter, which is connected to the output port of the output impedance adjuster and is used to detect the output power of the power amplifier.

[0013] In one embodiment of the utility model, a lifting platform is provided on the surface of the debugging platform, and the power amplifier is arranged on the lifting platform away from the surface of the debugging platform. The height of the lifting platform is adjusted so that the input port and the output port of the power amplifier, the input impedance adjuster and the output impedance adjuster are at the same height.

[0014] In one embodiment of the utility model, the lifting platform includes a top plate, a bottom plate, an adjusting member and at least two connecting rods, the power amplifier is provided on the surface of the top plate, the bottom plate is installed on the debugging platform, at least two connecting rods are cross-hinged and arranged between the top plate and the bottom plate, the adjusting member is fixedly connected to at least one of the connecting rods and is threadedly connected to at least another of the connecting rods, the adjusting member is rotated to adjust the angle between the two connecting rods to raise or lower the lifting platform.

[0015] In an embodiment of the present invention, at least two lifting platforms are provided and are arranged at intervals in the horizontal direction, and the power amplifier and the driver are respectively arranged on one of the lifting platforms.

[0016] In one embodiment of the utility model, a slide groove is provided on the surface of the debugging platform, and the slide groove is extended in the horizontal direction. A slider is protruded from the side of the bottom plate facing the debugging platform, and the slider is slidably arranged in the slide groove to enable the lifting platform to be slidably connected to the debugging platform.

[0017] In an embodiment of the present invention, the cross-sectional shapes of the slide groove and the slider are both dovetail-shaped.

[0018] In one embodiment of the utility model, the power amplifier debugging system also includes a thermal infrared detector, which is installed on the debugging platform and is spaced apart on one side of the power amplifier. The thermal infrared detector is used to detect the temperature of the power amplifier.

[0019] The power amplifier debugging system proposed in the utility model is used to debug the radio frequency performance of the power amplifier. The power amplifier debugging system includes a debugging station, a test host, a vector network analyzer, and a driver, an input impedance adapter, a power amplifier module, and an output impedance adapter connected in sequence. The output port of the vector network analyzer is connected to the input port of the driver, and the input port of the vector network analyzer is connected to the output port of the output impedance adapter. The vector network analyzer is used to provide a radio frequency signal source for debugging the power amplifier module and collect power amplifier debugging data; the test host is connected to the vector network analyzer, the input impedance adapter, and the output impedance adapter. When matching the input impedance and output impedance of the power amplifier module, the resistance values ​​of the input impedance adapter and the output impedance adapter are adjusted by the test host to adjust the input impedance and output impedance of the power amplifier module, and then the radio frequency signal is transmitted through the vector network analyzer. After the radio frequency signal is amplified by the driver, it is amplified by the input impedance adapter, the power amplifier module, and the output impedance adapter in sequence, and finally the output power and efficiency of the power amplifier module corresponding to the input impedance and output impedance are collected by the vector network analyzer. By repeating the above steps, the performance parameters of the power amplifier corresponding to different input impedances and output impedances can be obtained. By comparing the output power, efficiency, gain and other data of the power amplifier corresponding to different input impedances and output impedances, a power amplifier with better input impedance and output impedance can be matched, which greatly improves the debugging efficiency and debugging accuracy of the power amplifier. At the same time, a driver is set at the input port of the input impedance adjuster so that the input RF signal is first amplified by the driver before being output to the power amplifier, so that the input RF signal with lower power can be amplified to a RF signal with sufficiently high power before being fed to the transmitting antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of an embodiment of a power amplifier debugging system provided by the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the middle lifting platform.

[0023] Description of Figure Numbers:

[0024] 10. Debugging table; 11. Lifting platform; 111. Top plate; 112. Bottom plate; 113. Connecting rod; 114. Adjusting member; 115. Limiting groove; 116. Slider; 12. Slide; 13. Level; 20. Vector network analyzer; 30. Driver; 40. Input impedance adjuster; 50. Power amplifier; 51. First bias circuit; 52. Second bias circuit; 53. DC power supply; 60. Output impedance adjuster; 70. Attenuator; 80. Power meter; 90. Thermal infrared detector.

[0025] The purpose, features and advantages of the present invention will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0029] The utility model provides a power amplifier debugging system, which is used for debugging the radio frequency performance of a power amplifier 50 .

[0030] Combination Figure 1As shown, in one embodiment of the utility model, the power amplifier debugging system includes a debugging platform 10 and a debugging component; the debugging component is arranged on the debugging platform 10, and the debugging component includes: a test host, a vector network analyzer 20, and a driver 30, an input impedance adapter 40, and an output impedance adapter 60 connected in sequence; the output port of the vector network analyzer 20 is connected to the input port of the driver 30, and the input port of the vector network analyzer 20 is connected to the output port of the output impedance adapter 60; the input port of the power amplifier 50 is connected to the output port of the input impedance adapter 40, and the output port of the power amplifier 50 is connected to the input port of the output impedance adapter 60; the test host is in communication connection with the vector network analyzer 20, the input impedance adapter 40, and the output impedance adapter 60;

[0031] The vector network analyzer 20 is used to provide an RF signal source for debugging the power amplifier 50. The driver 30 receives the RF signal of the vector network analyzer 20 and amplifies the RF signal to the power required by the power amplifier 50. The input impedance adjuster 40 receives the RF signal after the driver 30 amplifies the power and transmits it to the power amplifier 50. After the RF signal is amplified by the power amplifier 50, it is sent to the vector network analyzer 20 through the output impedance adjuster 60. The vector network analyzer 20 collects the test data after the power amplifier 50 outputs and sends it to the test host. The test host receives the test data collected by the vector network analyzer 20, and adjusts the resistance values ​​of the input impedance adjuster 40 and the output impedance adjuster 60 through the test host control according to the test data, so as to adjust the input impedance and output impedance of the power amplifier 50, so as to obtain better RF performance of the power amplifier 50.

[0032] In this embodiment, the power of the input signal of the power amplifier 50 is amplified to a higher level to enhance the signal energy and drive a larger load. In network communication, the power amplifier 50 feeds the RF signal to the transmitting antenna by amplifying the relatively low power signal generated by the transmitter to a sufficiently high power RF signal. Therefore, the debugging of the RF performance such as the output power, added efficiency, gain and linearity of the power amplifier 50 plays a vital role in coping with the needs of more complex communication formats, higher bandwidths and higher frequencies. The input impedance and output impedance of the power amplifier 50 will affect the RF performance such as the output power, added efficiency, gain and linearity. Therefore, the power amplifier debugging system of the present application adjusts the impedance of the input and output ends of the power amplifier 50, that is, uses the principle of load pulling to improve the gain compression point, thereby reducing the nonlinear distortion of the harmonics, simulating the maximum output power load point of the power amplifier, and then achieving the purposes of high conversion efficiency, high output power, and high linearity power amplifier.

[0033] The vector network analyzer 20 replaces the traditional signal generator and can provide the RF input signal for the power amplifier debugging system. The vector network analyzer 20 can also be used to scan and collect the performance data such as the power, reflection coefficient and gain output by the power amplifier 50. A driver 30 is arranged between the vector network analyzer 20 and the input impedance adapter 40 to simulate the driving circuit of the power amplifier 50 and amplify the relatively low-power RF signal emitted by the vector network analyzer 20, so that the power amplifier debugging system only needs a relatively low-power RF input signal to meet the debugging requirements.

[0034] The test host is built with simith original image test software. During the debugging process, the input impedance adapter 40 connected to the input end of the power amplifier 50 is first fixed at a certain impedance (usually 50 ohms), and then a certain range of output impedance points are selected on the simith original image, so that the output impedance adapter 60 traverses the position of the impedance points included in the selected range along the curve on the simith original image. The vector network analyzer 20 of the impedance point passed during the movement will collect the RF performance data corresponding to the impedance point. Therefore, after the debugging is completed, the output power, efficiency, gain and other data of the power amplifier 50 corresponding to the different impedance values ​​in the selected range on the simith original image can be obtained. The experimenter can confirm the position of the impedance point corresponding to the better performance according to the changing trend of the RF performance in the selected range, and then select another range of impedance test points in the corresponding position for testing. Repeat the above steps several times to obtain the optimal output impedance point of the power amplifier 50. Then, the output impedance adjuster 60 is fixed at the optimal output impedance point, and the input impedance adjuster 40 is adjusted according to the above steps to find the optimal input impedance point of the power amplifier 50, so as to obtain the optimal input and output load impedance that enables the power amplifier 50 to obtain the optimal RF performance at the lowest input power.

[0035] By setting up this power amplifier debugging system, compared with the traditional method of finding the optimal input load impedance based on R&D experience and through continuous experiments when performing power amplifier 50 load matching, the present application can greatly improve the debugging efficiency of the power amplifier 50 and the accuracy of load matching by R&D personnel.

[0036] Combination Figure 1 As shown, in one embodiment of the present utility model, the power amplifier debugging system further includes a first bias circuit 51, a second bias circuit 52 and two DC power supplies 53;

[0037] The first bias circuit 51 and the second bias circuit 52 are both provided with an RF input port, a DC input port and an RF DC output port. The RF input port, the DC input port and an RF DC output port of the first bias circuit 51 are respectively connected to the output port of the input impedance adjuster 40, the DC power supply 53 and the input port of the power amplifier 50, while the RF input port, the DC input port and the RF DC output port of the second bias circuit 52 are respectively connected to the output port of the power amplifier 50, another DC power supply 53 and the input port of the output impedance adjuster 60.

[0038] In this embodiment, the first bias circuit 51 and the second bias circuit 52 can protect the DC power supply 53, preventing the RF AC signal from entering the DC power supply 53 and causing damage to the DC power supply 53. Therefore, in this application, the RF signal enters through the RF input port and is output from the RF DC output port, and the DC signal of the DC power supply 53 enters through the DC input port and is output from the RF DC output port. One of the two DC power supplies 53 is connected to the gate of the power amplifier 50, and the other DC power supply 53 is connected to the drain of the power amplifier 50.

[0039] Combination Figure 1 As shown, in one embodiment of the present invention, the power amplifier debugging system further includes an attenuator 70 , the input port of the attenuator 70 is connected to the output port of the output impedance adjuster 60 , and the output port of the attenuator 70 is connected to the input port of the vector network analyzer 20 .

[0040] In this embodiment, the specification of the attenuator 70 can be between 0 and -30 dB, which can be specifically selected according to the output power of the power amplifier 50. By using the attenuator 70 to equally attenuate the output power of the power amplifier 50 to output a lower power RF signal, the debugging components at the output end of the power amplifier are protected. When actually calculating the output power of the power amplifier 50, it is only necessary to add the attenuation value of the attenuator 70.

[0041] Combination Figure 1 As shown, in one embodiment of the present invention, the power amplifier debugging system further includes a power meter 80 , which is connected to the output port of the output impedance adjuster 60 and is used to detect the output power of the power amplifier 50 .

[0042] In this embodiment, the power meter 80 is used to detect the output power of the power amplifier 50. Of course, the vector network analyzer 20 can also be used to collect the output power of the power amplifier 50. By providing the power meter 80, the collection result of the vector network analyzer 20 can be compared, thereby improving the accuracy of the collection of the output power data of the power amplifier 50.

[0043] Combination Figure 1 and Figure 2 As shown, in one embodiment of the present invention, a lifting platform 11 is provided on the surface of the debugging platform 10, and the power amplifier 50 is arranged on the lifting platform 11 away from the surface of the debugging platform 10. The height of the lifting platform 11 is adjusted so that the input port and the output port of the power amplifier 50, the input impedance adjuster 40 and the output impedance adjuster 60 are at the same height.

[0044] In this embodiment, when the RF performance test of the power amplifier 50 is performed, especially the high-frequency RF signal, it is very susceptible to poor connection between the input and output ports of the debugging components, which may affect the transmission of the RF signal. Therefore, when the debugging components are connected, the coaxial connection of the input and output ports should be ensured as much as possible. The power amplifier debugging system can be applied to the debugging of power amplifiers 50 of different frequency bands, bandwidths and materials. However, the sizes of power amplifiers 50 of different frequency bands, bandwidths or materials will be different. For example, the second-generation power semiconductors LDMOS and GaAs, and the third-generation semiconductors GaN, respectively have chips and circuit arrangements of different sizes, so the corresponding sizes of the power amplifiers 50 are also different. Therefore, in order to facilitate the coaxial connection of power amplifiers 50 of different specifications with the debugging components, the problem of the height difference between the power amplifier 50 and the input and output ports of the debugging components can be solved by adjusting the height of the lifting platform 11.

[0045] Combination Figure 1 and Figure 2 As shown, in one embodiment of the utility model, the lifting platform 11 includes a top plate 111, a bottom plate 112, an adjusting member 114 and at least two connecting rods 113. A power amplifier 50 is provided on the surface of the top plate 111. The bottom plate 112 is installed on the debugging platform 10. At least two connecting rods 113 are cross-hinged and arranged between the top plate 111 and the bottom plate 112. The adjusting member 114 is connected to at least one of the connecting rods 113 and is threadedly connected to at least another of the connecting rods 113. The adjusting member 114 is rotated to adjust the angle between the two connecting rods 113 so that the lifting platform 11 is raised or lowered.

[0046] In this embodiment, there can be two or more connecting rods 113. When there are two connecting rods 113, the two connecting rods 113 cross and are movably hinged at the middle of the two connecting rods 113 so that the two connecting rods 113 can rotate. At the same time, the two ends of the two connecting rods 113 are respectively connected to the top plate 111 and the bottom plate 112. The top plate 111 and the bottom plate 112 are both provided with corresponding upper and lower limit grooves 115. The direction in which the limit grooves 115 extend is parallel to the top plate 111 and the bottom plate 111. One end of the connecting rod 113 is slidably arranged in the limit groove 115 and can slide relative to the top plate 111 or the bottom plate 112 along the direction in which the sliding groove extends. The other end is rotatably connected to the top plate 111 or the top plate 111, and the relative position of the other end of the connecting rod 113 with the top plate 111 or the bottom plate 112 remains unchanged during rotation. Therefore, by rotating the adjusting member 114, one end of the connecting rod 113 is driven to move along the limiting groove 115, so that the angle between the two connecting rods 113 can be changed, and the height adjustment of the top plate 111 can be achieved. The adjusting member 114 can be a structure such as a bolt or a screw. When there are multiple connecting rods 113, every two connecting rods 113 are cross-hinged to form an X-shaped hinge structure, and there are at least two hinge structures, which are respectively arranged between the bottom plate 112 and the top plate 111 in parallel and at intervals, and the two hinge structures are connected by two adjusting rods arranged in parallel and at intervals. It can be understood that two limiting grooves 115 are provided on the top plate 111 and the bottom plate 112, and the connection method of the connecting rod 113 of each hinge structure with the top plate 111 and the bottom plate 112 can refer to the above description. One end of the adjusting member 114 is connected to an adjusting rod, and the other end is threadedly connected to the adjusting rod. The adjusting member 114 is rotated to make the two adjusting rods move closer to or farther away from each other, thereby driving the two connecting rods 113 hinged to each other in the two hinged structures to rotate to adjust the height of the lifting platform 11.

[0047] Combination Figure 1 As shown, in one embodiment of the present invention, at least two lifting platforms 11 are provided and are arranged at intervals in the horizontal direction. The power amplifier 50 and the driver 30 are respectively arranged on one lifting platform 11 .

[0048] In this embodiment, each connection port in the power amplifier debugging system will affect the transmission quality of the RF signal, so multiple lifting platforms 11 are provided to facilitate adjusting the height of different debugging components. It can be understood that the first bias circuit 51, the second bias circuit 52 and the attenuator 70 are also provided on the lifting platform 11. Since the bottom of the input impedance adjuster 40, the output impedance adjuster 60 and the vector network analyzer 20 have adjustable supporting feet, they can be placed on the debugging platform 10 and the height can be adjusted by the supporting feet.

[0049] Combination Figure 1 and Figure 2As shown, in one embodiment of the utility model, a slide groove 12 is opened on the surface of the debugging platform 10, and the slide groove 12 is extended in the horizontal direction. A slider 116 is protruded from the side of the bottom plate 112 facing the debugging platform 10, and the slider 116 is slidably set in the slide groove 12 to make the lifting platform 11 and the debugging platform 10 slidably connected.

[0050] Due to the different sizes of different power amplifiers 50, the design of the bias circuit, the specifications of the driver 30 and the attenuator 70, the lengths thereof may vary. Therefore, in this embodiment, a slide groove 12 is provided on the debugging platform 10, and a slider 116 is provided on the lifting platform 11, so that the driver 30, the first bias circuit 51, the power amplifier 50, the second bias circuit 52 and the attenuator 70 can be moved horizontally through the sliding cooperation between the lifting platform 11 and the debugging platform 10, thereby further improving the convenience of the coaxial connection of each debugging component.

[0051] Combination Figure 2 As shown, in one embodiment of the present invention, the cross-sectional shapes of the slide groove 12 and the slider 116 are both dovetail-shaped.

[0052] In this embodiment, the slide groove 12 runs through both ends of the debugging platform 10, so the lifting platform 11 can slide into the slide groove 12 from the opening of the slide groove 12 at one end of the debugging platform 10. By designing both into a dovetail shape, the lifting platform 11 is prevented from being separated from the slide groove 12 along the direction of the debugging platform 10 perpendicular to the extension of the slide groove 12, which plays a limiting role on the lifting platform 11. In other embodiments, the shape of the slide groove 12 and the slider 116 can also be designed to be triangular, trapezoidal, etc.

[0053] Combination Figure 1 As shown, in one embodiment of the present utility model, the power amplifier debugging system also includes a thermal infrared detector 90, which is installed on the debugging platform 10 and is spaced apart on one side of the power amplifier 50. The thermal infrared detector 90 is used to detect the temperature of the power amplifier 50.

[0054] In this embodiment, when debugging the power amplifier 50, sometimes the power amplifier 50 generates high heat locally due to factors such as mismatch of the input and output impedance points of the power amplifier 50 and unreasonable circuit design of the power amplifier 50. Therefore, by setting up a thermal infrared detector 90, it can be used to detect the temperature of the power amplifier 50 in real time. When the temperature rises rapidly, it is convenient for the experimenter to turn off the RF signal and the DC power supply 53 in time, thereby improving the safety of the experiment.

[0055] A level 13 is also provided on the debugging platform 10. The level 13 is used to calibrate the levelness of the debugging platform 10 and each debugging component. The debugging platform 10 and each debugging component are adjusted to be horizontal according to the level 13, which further facilitates the coaxial connection of each debugging component, thereby improving the transmission quality of the RF signal and the debugging accuracy.

[0056] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A power amplifier debugging system, used for debugging the radio frequency performance of a power amplifier, characterized in that: The power amplifier debugging system comprises: Debugging station; A debugging component, the debugging component is arranged on the debugging platform, and the debugging component comprises: a test host, a vector network analyzer, and a driver, an input impedance adapter, and an output impedance adapter connected in sequence; the output port of the vector network analyzer is connected to the input port of the driver, and the input port of the vector network analyzer is connected to the output port of the output impedance adapter; the input port of the power amplifier is connected to the output port of the input impedance adapter, and the output port of the power amplifier is connected to the input port of the output impedance adapter; the test host is in communication connection with the vector network analyzer, the input impedance adapter, and the output impedance adapter; The vector network analyzer is used to provide an RF signal source for debugging the power amplifier. The driver receives the RF signal of the vector network analyzer and amplifies the RF signal to the power required by the power amplifier. The input impedance adjuster receives the RF signal after the driver amplifies the power and transmits it to the power amplifier. After the RF signal is amplified by the power amplifier, it is sent to the vector network analyzer through the output impedance adjuster. The vector network analyzer collects test data after the power amplifier outputs and sends it to the test host. The test host receives the test data collected by the vector network analyzer, and controls and adjusts the resistance values ​​of the input impedance adjuster and the output impedance adjuster through the test host according to the test data to adjust the input impedance and output impedance of the power amplifier to obtain better RF performance of the power amplifier.

2. The power amplifier debugging system according to claim 1, characterized in that: The power amplifier debugging system also includes a first bias circuit, a second bias circuit and two DC power supplies; The first bias circuit and the second bias circuit are both provided with an RF input port, a DC input port and an RF DC output port. The RF input port, the DC input port and one of the RF DC output ports of the first bias circuit are respectively connected to the output port of the input impedance adjuster, the DC power supply and the input port of the power amplifier. The RF input port, the DC input port and the RF DC output port of the second bias circuit are respectively connected to the output port of the power amplifier, another of the DC power supply and the input port of the output impedance adjuster.

3. The power amplifier debugging system according to claim 1, characterized in that: The power amplifier debugging system further comprises an attenuator, an input port of the attenuator is connected to an output port of the output impedance adjuster, and an output port of the attenuator is connected to an input port of the vector network analyzer.

4. The power amplifier debugging system according to claim 1, characterized in that: The power amplifier debugging system also includes a power meter, which is connected to the output port of the output impedance adjuster and is used to detect the output power of the power amplifier.

5. The power amplifier debugging system according to any one of claims 1 to 4, characterized in that: A lifting platform is provided on the surface of the debugging platform, and the power amplifier is arranged on the lifting platform away from the surface of the debugging platform. The height of the lifting platform is adjusted so that the input port and output port of the power amplifier, the input impedance adjuster and the output impedance adjuster are at the same height.

6. The power amplifier debugging system according to claim 5, characterized in that: The lifting platform includes a top plate, a bottom plate, an adjusting member and at least two connecting rods. The power amplifier is provided on the surface of the top plate. The bottom plate is installed on the debugging platform. At least two connecting rods are cross-hinged and arranged between the top plate and the bottom plate. The adjusting member is connected to at least one of the connecting rods and is threadedly connected to at least another of the connecting rods. The adjusting member is rotated to adjust the angle between the two connecting rods so that the lifting platform can be raised or lowered.

7. The power amplifier debugging system according to claim 6, characterized in that: At least two lifting platforms are provided and are arranged at intervals in the horizontal direction. The power amplifier and the driver are respectively arranged on one of the lifting platforms.

8. The power amplifier debugging system according to claim 6, characterized in that: A slide groove is provided on the surface of the debugging platform, and the slide groove is extended in the horizontal direction. A slider is protruded from the side of the bottom plate facing the debugging platform, and the slider is slidably arranged in the slide groove, so that the lifting platform is slidably connected with the debugging platform.

9. The power amplifier debugging system according to claim 8, characterized in that: The cross-sectional shapes of the slide groove and the slider are both dovetail-shaped.

10. The power amplifier debugging system according to any one of claims 1 to 4, characterized in that: The power amplifier debugging system also includes a thermal infrared detector, which is installed on the debugging platform and is spaced apart from one side of the power amplifier. The thermal infrared detector is used to detect the temperature of the power amplifier.

Images