Broadband power amplifier matching circuit and communication power amplifier device

Abstract

The utility model relates to the technical field of communication power amplifiers, and provides a broadband power amplifier matching circuit and a communication power amplifier device. The input matching module is connected with the input end of the power amplifier module, the input matching module comprises a first switch unit and at least two input adjusting pieces, and the input adjusting pieces are connected with the first switch unit; the output matching module is connected with the output end of the power amplifier module, the output matching module comprises a second switch unit and at least two output adjusting pieces, and the output adjusting pieces are connected with the second switch unit; and the control module is respectively connected with the controlled end of the first switch unit and the controlled end of the second switch unit. According to the broadband power amplifier, the connection number of the input adjusting pieces and the connection number of the output adjusting pieces are adjusted, input and output matching parameters are flexibly adjusted, the broadband power amplifier matching effect is achieved by adjusting the correspondingly matched input and output matching parameters for different signal frequency bands, the output gain is flatter, and the nonlinear influence of the gain is relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication power amplifier technical field especially relates to a wideband power amplifier matching circuit and communication power amplifier device. BACKGROUND

[0002] In the communication system, especially the radio frequency communication system, the signal cannot leave power amplification processing, in the radio frequency power amplifier access radio frequency link, if the radio frequency power amplifier and radio frequency link are not matched, will lead to power amplifier signal reflection is serious, and power output attenuation, at the same time, the gain is not flat output nonlinear signal component, seriously influence the communication quality of communication equipment, therefore need power amplifier matching to guarantee the communication quality.

[0003] In the prior art, a matching circuit is generally arranged at the input end and the output side of the power amplifier circuit to realize power amplifier matching, however, due to the fixed parameters of the matching circuit, the matching circuit can only have good performance in the corresponding working frequency band, and there is a problem of narrow signal frequency band, which cannot meet the communication demand with large signal frequency band variation. Meanwhile, even in the working frequency band, due to the fixed parameters of the matching circuit, the output gain is different at the high and low end frequency bands, that is, the output gain is not flat, and there is a problem of nonlinearity in the output at the high and low end frequency bands, and the matching circuit can only have the best performance in the frequency band with flat output gain in the middle, that is, the best frequency band is further narrowed. SUMMARY

[0004] The utility model provides a wideband power amplifier matching circuit and communication power amplifier device to solve the problem of narrow frequency band in the prior art.

[0005] The utility model provides a wideband power amplifier matching circuit, which comprises:

[0006] a power amplifier module;

[0007] an input matching module connected to the input end of the power amplifier module, the input matching module comprising a first switch unit and at least two input adjusting pieces, the input adjusting pieces being connected to the first switch unit, and the first switch unit being used to adjust the number of input adjusting pieces connected to the input end of the power amplifier module;

[0008] an output matching module connected to the output end of the power amplifier module, the output matching module comprising a second switch unit and at least two output adjusting pieces, the output adjusting pieces being connected to the second switch unit, and the second switch unit being used to adjust the number of output adjusting pieces connected to the output end of the power amplifier module;

[0009] a control module connected to the controlled ends of the first switch unit and the second switch unit respectively.

[0010] The utility model provides a kind of broadband power amplifier matching circuit, the first switch unit includes the first switch tube corresponding with the input adjustment piece, the first switch tube is connected with corresponding input adjustment piece to control the on-off of input adjustment piece and the input end of power amplifier module, the control module is connected with the controlled end of the first switch tube.

[0011] The utility model provides a kind of broadband power amplifier matching circuit, the second switch unit includes the second switch tube corresponding with the output adjustment piece, the second switch tube is connected with corresponding output adjustment piece to control the on-off of output adjustment piece and the output end of power amplifier module, the control module is connected with the controlled end of the second switch tube.

[0012] The utility model provides a kind of broadband power amplifier matching circuit, the input matching module further includes input adjustment inductance unit, the input adjustment piece is input adjustment capacitor, the input adjustment inductance unit is connected with the input end of power amplifier module, the input adjustment capacitor is connected with the input adjustment inductance unit;

[0013] The output matching module further includes output adjustment inductance unit, the output adjustment piece is output adjustment capacitor, the output adjustment inductance unit is connected with the output end of power amplifier module, the output adjustment capacitor is connected with the output adjustment inductance unit.

[0014] The utility model provides a kind of broadband power amplifier matching circuit, the input adjustment inductance unit includes first inductance and second inductance, one end of the first inductance is used to be connected with signal input end, the other end of the first inductance is connected with one end of the second inductance and one end of each input adjustment capacitor respectively, the other end of the input adjustment capacitor is connected with one end of corresponding first switch tube, the other end of the first switch tube is grounded, the other end of the second inductance is connected with the input end of power amplifier module.

[0015] The utility model provides a kind of broadband power amplifier matching circuit, the output adjustment inductance unit includes third inductance and fourth inductance, one end of the third inductance is connected with the output end of power amplifier module, the other end of the third inductance is connected with one end of the fourth inductance and one end of each output adjustment capacitor respectively, the other end of the output adjustment capacitor is connected with one end of corresponding second switch tube, the other end of the second switch tube is grounded, the other end of the fourth inductance is used to be connected with signal output end.

[0016] The utility model provides a kind of broadband power amplifier matching circuit, and the control module includes connecting interface, memory and isolation drive unit, the connecting interface is provided with address code end foot, the address code end foot is connected with the memory, the output of the memory is connected with the input of the isolation drive unit, the output of the isolation drive unit is connected with the controlled end of the first switch unit and the controlled end of the second switch unit.

[0017] A kind of broadband power amplifier matching circuit provided by the utility model further includes first basic matching unit and second basic matching unit, the first basic matching unit is connected with the input of the power amplifier module, the second basic matching unit is connected with the output of the power amplifier module.

[0018] A kind of broadband power amplifier matching circuit provided by the utility model, the first basic matching unit includes fifth inductor, first capacitor and second capacitor, one end of the fifth inductor is connected with the input of the power amplifier module, the other end of the fifth inductor is connected with the one end of the first capacitor and the one end of the second capacitor respectively, the other end of the first capacitor and the other end of the second capacitor are grounded;

[0019] The second basic matching unit includes sixth inductor, third capacitor and fourth capacitor, one end of the sixth inductor is connected with the output of the power amplifier module, the other end of the sixth inductor is connected with the one end of the third capacitor and the one end of the fourth capacitor respectively, the other end of the third capacitor and the other end of the fourth capacitor are grounded.

[0020] The utility model further provides a kind of power amplifier device, including the broadband power amplifier matching circuit described above, further include signal input end and signal output end, the signal input end is connected with the input of the power amplifier module by the input matching module, the output of the power amplifier module is connected with the signal output end by the output matching module.

[0021] The utility model provides a kind of broadband power amplifier matching circuit and communication power amplifier device, at least have beneficial effect: input matching module is connected with the input end of power amplifier module, the quantity of input adjustment piece connected with power amplifier module input end is adjusted under the control of control module in the first switch unit in input matching module, since the connection quantity of input adjustment piece changes will make input matching parameter also change. Similarly, output matching module is connected with the output end of power amplifier module, the quantity of output adjustment piece connected with power amplifier module output end is adjusted under the control of control module in the second switch unit in output matching module, similarly will make output matching parameter change. Therefore, by adjusting the connection quantity of input adjustment piece, the connection quantity of output adjustment piece, the matching parameter of input, output can be flexibly adjusted, for different signal frequency band, by adjusting the input, output matching parameter corresponding to adaptation, the power amplifier matching for wider frequency band signal can be provided, reach the effect of broadband power amplifier matching, it is favorable to improve versatility, and matching parameter flexible adjustment can make output gain more flat, reduce the influence of gain nonlinearity. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be simply introduced, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0023] Figure 1 It is one of the utility model provides a kind of broadband power amplifier matching circuit Circuit diagram in embodiment.

[0024] Figure 2 It is the circuit diagram of input matching module in one of the utility model provides a kind of broadband power amplifier matching circuit in embodiment.

[0025] Figure 3 It is the structure block diagram of one of the utility model provides a kind of broadband power amplifier matching circuit in embodiment.

[0026] Figure 4 It is the circuit diagram of multiple sets of matching circuit and power amplifier tube scheme.

[0027] Reference signs:

[0028] 100: power amplifier module;200: input matching module;210: first switch unit;220: input adjustment piece;300: output matching module;310: second switch unit;320: output adjustment piece;400: control module;410: connection interface;420: memory;430: isolation driving unit;500: first basic matching unit;600: second basic matching unit. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] In the related art, there is a solution of setting multiple sets of matching circuits and power amplifier tubes, such as Figure 4 As shown, each set of matching circuits and power amplifier tubes corresponds to a different frequency band to broaden the communication frequency band. However, this solution also requires a switching module to switch to the corresponding matching circuits and power amplifier tubes when communicating in different frequency bands, which introduces switching losses and reduces the power amplifier efficiency. In addition, multiple sets of matching circuits and power amplifier tubes will cause the overall volume to increase significantly and the implementation cost to increase exponentially.

[0031] In order to achieve broadband amplifier matching, the following Figures 1-3 The utility model is described as a broadband power amplifier matching circuit, comprising:

[0032] Power amplifier module 100;

[0033] An input matching module 200 is connected to the input end of the power amplifier module 100. The input matching module 200 includes a first switch unit 210 and at least two input adjustment members 220. The input adjustment members 220 are connected to the first switch unit 210. The first switch unit 210 is used to adjust the number of the input adjustment members 220 connected to the input end of the power amplifier module 100.

[0034] An output matching module 300 is connected to the output end of the power amplifier module 100. The output matching module 300 includes a second switch unit 310 and at least two output adjustment members 320. The output adjustment members 320 are connected to the second switch unit 310. The second switch unit 310 is used to adjust the number of the output adjustment members 320 connected to the output end of the power amplifier module 100.

[0035] The control module 400 is connected to the controlled end of the first switch unit 210 and the controlled end of the second switch unit 310 respectively.

[0036] The input matching module 200 is connected with the input end of the power amplifier module 100, the first switch unit 210 in the input matching module 200 adjusts the number of input adjusting pieces 220 connected with the input end of the power amplifier module 100 under the control of the control module 400, and since the number of the connected input adjusting pieces 220 changes, the input matching parameter also changes. Similarly, the output matching module 300 is connected with the output end of the power amplifier module 100, the second switch unit 310 in the output matching module 300 adjusts the number of output adjusting pieces 320 connected with the output end of the power amplifier module 100 under the control of the control module 400, and similarly, the output matching parameter also changes.

[0037] In this way, by adjusting the number of the connected input adjusting pieces 220 and the number of the connected output adjusting pieces 320, the matching parameters of the input and the output can be flexibly adjusted, for different signal frequency bands, by adjusting the corresponding adaptive input and output matching parameters, the power amplifier matching for a wider frequency band signal can be provided, the effect of wide frequency power amplifier matching is achieved, the universality is improved, and the matching parameters are flexibly adjusted, so that the output gain is more flat, and the influence of gain nonlinearity is reduced.

[0038] In addition, compared with the scheme of arranging multiple sets of matching circuits and power amplifier tubes, the wide frequency power amplifier matching circuit has the advantages that multiple power amplifier modules 100 do not need to be arranged and switching is not needed, the power amplifier efficiency is guaranteed, and the wide frequency power amplifier matching circuit has the advantages of small size and low implementation cost.

[0039] In some embodiments of the utility model, the power amplifier module 100 can include the implementation mode of power amplifier tubes, power amplifier circuits and other devices or circuits.

[0040] Reference Figure 1 And Figure 2 In some embodiments of the wide frequency power amplifier matching circuit, the first switch unit 210 includes a first switch tube corresponding to each input adjusting piece 220, the first switch tube is connected with the corresponding input adjusting piece 220 to control the on-off of the input adjusting piece 220 and the input end of the power amplifier module 100, and the control module 400 is connected with the controlled end of the first switch tube.

[0041] Under the control of the control module 400, the on-off of the first switch tube can be controlled, so that the on-off of the corresponding input adjusting piece 220 and the input end of the power amplifier module 100 can be controlled. In this way, each input adjusting piece 220 is connected with the first switch tube, the number of the input adjusting pieces 220 connected with the input end of the power amplifier module 100 can be flexibly adjusted to the maximum extent, and the adjustment is more accurate.

[0042] In some embodiments of the utility model, two or more input adjusting elements 220 can be connected by one first switch tube, so that one first switch tube controls the on-off between two or more input adjusting elements 220 and the input end of the power amplifier module 100.

[0043] Reference Figure 1 In some embodiments of the utility model, the second switch unit 310 comprises a second switch tube corresponding to each output adjusting element 320, the second switch tube is connected to the corresponding output adjusting element 320 to control the on-off between the output adjusting element 320 and the output end of the power amplifier module 100, and the control module 400 is connected to the controlled end of the second switch tube.

[0044] Under the control of the control module 400, the on-off of the corresponding output adjusting element 320 and the output end of the power amplifier module 100 can be controlled by controlling the on-off of the second switch tube. In this way, each output adjusting element 320 is linked with a second switch tube, the number of output adjusting elements 320 connected to the output end of the power amplifier module 100 can be flexibly adjusted to the maximum extent, and the output adjusting elements 320 can be adjusted more accurately.

[0045] In some embodiments of the utility model, two or more output adjusting elements 320 can be connected by one second switch tube, so that one second switch tube controls the on-off between two or more output adjusting elements 320 and the output end of the power amplifier module 100.

[0046] In some embodiments of the utility model, the first switch tube and the second switch tube can be PIN tubes, and the structure of the PIN tube has the advantages of simple control and small size. In some embodiments, the first switch tube and the second switch tube can also be transistors with switching function such as triodes and field effect tubes.

[0047] Reference Figure 1 And Figure 2 In some embodiments of the utility model, the input matching module 200 further comprises an input adjusting inductance unit 230, the input adjusting element 220 is an input adjusting capacitor, the input adjusting inductance unit 230 is connected to the input end of the power amplifier module 100, and the input adjusting capacitor is connected to the input adjusting inductance unit 230.

[0048] The output matching module 300 further comprises an output adjusting inductance unit 330, the output adjusting element 320 is an output adjusting capacitor, the output adjusting inductance unit 330 is connected to the output end of the power amplifier module 100, and the output adjusting capacitor is connected to the output adjusting inductance unit 330.

[0049] The input adjusting inductor unit 230 and the input adjusting capacitor form an input LC circuit, and due to the impedance characteristics of the LC circuit being related to the frequency of a signal, the connection number of the input adjusting capacitor is adjusted by the on-off of the first switch tube, the capacitive reactance parameter of the input LC circuit is changed, and the impedance matching is achieved in the frequency band of the input signal, so that the power amplifier matching effect of the input side is achieved. Similarly, the output adjusting inductor unit 330 and the output adjusting capacitor form an output LC circuit, and the connection number of the output adjusting capacitor is adjusted by the on-off of the second switch, the capacitive reactance parameter of the output LC circuit is changed, and the impedance matching is achieved in the frequency band of the output signal and the subsequent circuit, so that the power amplifier matching effect of the output side is achieved.

[0050] With reference to Figure 1 And Figure 2 In some embodiments of the utility model, the first switch tube and the second switch tube are PIN tubes, the number of the first switch tube and the second switch tube is 8, and correspondingly, the number of the input adjusting capacitor and the output adjusting capacitor is also 8.

[0051] In some embodiments of the utility model, the input matching module 200 can also be an embodiment comprising an input adjusting capacitor unit, the input adjusting unit 220 is an input adjusting inductor, and the output matching module 300 can also be an embodiment comprising an output adjusting capacitor unit, and the output adjusting unit 320 is an output adjusting inductor.

[0052] With reference to Figure 1 And Figure 2 In some embodiments of the utility model, the input adjusting inductor unit 230 comprises a first inductor L1 and a second inductor L2, one end of the first inductor L1 is used for being connected with a signal input end, the other end of the first inductor L1 is connected with one end of the second inductor L2 and one end of each input adjusting capacitor C1-C8 respectively, the other end of the input adjusting capacitor C1-C8 is connected with one end of the corresponding first switch tube Pin1-Pin8, the other end of the first switch tube Pin1-Pin8 is grounded, and the other end of the second inductor L2 is connected with the input end of the power amplifier module 100.

[0053] The first inductor L1, the second inductor L2 and each input regulating capacitor form an input LC circuit, and the first switch Pin1-Pin8 controls whether the corresponding input regulating capacitor C1-C8 is connected to the input LC circuit, when the first switch is turned on, the corresponding input regulating capacitor can form a loop by being connected to the ground, which is equivalent to that the input regulating capacitor is connected to the input LC circuit; when the first switch is turned off, the corresponding input regulating capacitor cannot form a loop, which is equivalent to that the input regulating capacitor is disconnected from the input LC circuit. In this way, the number of the input regulating components 220 connected to the input end of the power amplifier module 100 is adjusted by controlling whether the input regulating capacitor is connected to the input LC circuit through the first switch, and the purpose of adjusting the number of the input regulating components 220 connected to the input end of the power amplifier module 100 is achieved, and the structure is simple and convenient to implement.

[0054] In some embodiments of the utility model, the input regulating inductor unit 230 can also include one, three or more inductors according to actual application requirements.

[0055] Reference Figure 1 In some embodiments of the utility model, the output regulating inductor unit 330 includes a third inductor L5 and a fourth inductor L6, one end of the third inductor L5 is connected to the output end of the power amplifier module 100, the other end of the third inductor L5 is connected to one end of the fourth inductor L6 and one end of each of the output regulating capacitors C9-C16 respectively, the other end of the output regulating capacitors C9-C16 is connected to one end of the corresponding second switch Pin9-Pin16, the other end of the second switch Pin9-Pin16 is grounded, and the other end of the fourth inductor L6 is used to be connected to a signal output end.

[0056] The third inductor L5, the fourth inductor L6 and each output regulating capacitor form an output LC circuit, and the second switch Pin9-Pin16 controls whether the corresponding output regulating capacitor C9-C16 is connected to the output LC circuit, when the second switch is turned on, the corresponding output regulating capacitor can form a loop by being connected to the ground, which is equivalent to that the output regulating capacitor is connected to the output LC circuit; when the second switch is turned off, the corresponding output regulating capacitor cannot form a loop, which is equivalent to that the output regulating capacitor is disconnected from the output LC circuit. In this way, the number of the output regulating components 320 connected to the output end of the power amplifier module 100 is adjusted by controlling whether the output regulating capacitor is connected to the output LC circuit through the second switch, and the purpose of adjusting the number of the output regulating components 320 connected to the output end of the power amplifier module 100 is achieved, and the structure is simple and convenient to implement.

[0057] Reference Figure 3In some embodiments of the utility model, the control module 400 includes a connection interface 410, a memory 420 and an isolation driving unit 430, the connection interface 410 is provided with an address code end pin, the address code end pin is connected with the memory 420, the output end of the memory 420 is connected with the input end of the isolation driving unit 430, and the output end of the isolation driving unit 430 is connected with the controlled end of the first switch unit 210 and the controlled end of the second switch unit 310.

[0058] The connection interface 410 is used for connecting with an external master control device, the master control device transmits an address code to the memory 420 through the connection interface 410, the memory 420 can store information of the number of input adjusting pieces 220 and the number of output adjusting pieces 320 corresponding to different signal frequency bands, under the action of the address code transmitted by the address code end pin, the memory 420 outputs the number of input adjusting pieces 220 instructions and the number of output adjusting pieces 320 instructions corresponding to the address code, so as to drive the first switch unit 210 and the second switch unit 310 by the isolation driving unit 430, and make the corresponding number of input adjusting pieces 220 and the corresponding number of output adjusting pieces 320 connect with the input end and the output end of the power amplifier module 100 respectively, which is convenient and fast for control.

[0059] On the basis of driving the first switch unit 210 and the second switch unit 310, the isolation driving unit 430 makes the control side and the power amplifier side isolated, so as to guarantee the stability of the power amplification processing of the signal, and also make the control of the first switch unit 210 and the second switch unit 310 more stable, avoid the mutual influence of the control side and the power amplifier side, and improve the reliability.

[0060] Reference Figure 3 In some embodiments of the utility model, the memory 420 and the isolation driving unit 430 can both have two, respectively corresponding to the first switch unit 210 and the second switch unit 310, which is convenient for more accurate control.

[0061] In some embodiments of the utility model, the isolation driving unit 430 can be an embodiment including an optoelectronic coupler or a driving isolation circuit and the like.

[0062] Reference Figure 1 In some embodiments of the utility model, the utility model further includes a first basic matching unit 500 and a second basic matching unit 600, the first basic matching unit 500 is connected with the input end of the power amplifier module 100, and the second basic matching unit 600 is connected with the output end of the power amplifier module 100.

[0063] The first basic matching unit 500 provides basic input power amplifier matching parameters, and the input matching module 200 adjusts on the basis, so that the input matching adjustment is more detailed and accurate, and the second basic matching unit 600 provides basic output power amplifier matching parameters, and the output matching module 300 adjusts on the basis, so that the output matching adjustment is also more detailed and accurate.

[0064] Reference Figure 1 In some embodiments of the wideband power amplifier matching circuit, the first basic matching unit 500 comprises a fifth inductor L3, a first capacitor and a second capacitor, one end of the fifth inductor L3 is connected with the input end of the power amplifier module 100, the other end of the fifth inductor L3 is connected with one end of the first capacitor and one end of the second capacitor respectively, and the other end of the first capacitor and the other end of the second capacitor are grounded.

[0065] The second basic matching unit 600 comprises a sixth inductor L4, a third capacitor and a fourth capacitor, one end of the sixth inductor L4 is connected with the output end of the power amplifier module 100, the other end of the sixth inductor L4 is connected with one end of the third capacitor and one end of the fourth capacitor respectively, and the other end of the third capacitor and the other end of the fourth capacitor are grounded.

[0066] The fifth inductor L3, the first capacitor and the second capacitor are connected to form an input basic LC circuit, and provide basic capacitive reactance parameters of input, and the sixth inductor L4, the third capacitor and the fourth capacitor are connected to form an output basic LC circuit, and provide basic capacitive reactance parameters of output.

[0067] Reference Figure 1 In some embodiments of the utility model, it further comprises an input direct current blocking capacitor and an output direct current blocking capacitor, the input matching module 200 is connected with the input end of the power amplifier module 100 through the input direct current blocking capacitor, and the output end of the power amplifier module 100 is connected with the output matching module 300 through the output direct current blocking capacitor.

[0068] The utility model provides a kind of power amplifier device, and the power amplifier device described below can be correspondingly referred to the wideband power amplifier matching circuit described above.

[0069] The utility model further provides a kind of power amplifier device, comprising the wideband power amplifier matching circuit described above, further comprising signal input end and signal output end, the signal input end is connected with the input end of the power amplifier module 100 by the input matching module 200, and the output end of the power amplifier module 100 is connected with the signal output end by the output matching module 300.

[0070] The input matching module 200 is connected with the input end of the power amplifier module 100, the first switch unit 210 in the input matching module 200 adjusts the number of input adjusting pieces 220 connected with the input end of the power amplifier module 100 under the control of the control module 400, and since the number of the connected input adjusting pieces 220 changes, the input matching parameter also changes. Similarly, the output matching module 300 is connected with the output end of the power amplifier module 100, the second switch unit 310 in the output matching module 300 adjusts the number of output adjusting pieces 320 connected with the output end of the power amplifier module 100 under the control of the control module 400, and similarly, the output matching parameter also changes. The signal input from the signal input end is subjected to input-side power amplifier matching through the input matching module 200, and then is subjected to power amplification processing through the power amplifier module 100, and then the output signal is subjected to output-side power amplifier matching through the output matching module 300, and finally is output from the signal output end.

[0071] In this way, by adjusting the number of the connected input adjusting pieces 220 and the number of the connected output adjusting pieces 320, the matching parameters of the input and the output can be flexibly adjusted, for different signal frequency bands, by adjusting the corresponding adaptive input and output matching parameters, power amplifier matching can be provided for signals of a wider frequency band, the effect of wide-frequency power amplifier matching is achieved, the universality is improved, and the matching parameters are flexibly adjusted, so that the output gain is more flat, and the influence of gain nonlinearity is reduced.

[0072] In the description of the utility model, it is to be understood that the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0073] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0074] All the actions of obtaining signals, information or data in this application are carried out in compliance with the corresponding data protection regulations policy of the place and with the authorization given by the corresponding device owner.

[0075] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A broadband power amplifier matching circuit, characterized in that: include: Power amplifier module (100); An input matching module (200) is connected to the input end of the power amplifier module (100), the input matching module (200) comprising a first switch unit (210) and at least two input adjustment members (220), the input adjustment members (220) being connected to the first switch unit (210), the first switch unit (210) being used to adjust the number of the input adjustment members (220) connected to the input end of the power amplifier module (100); An output matching module (300) is connected to the output end of the power amplifier module (100), the output matching module (300) comprises a second switch unit (310) and at least two output adjustment members (320), the output adjustment members (320) are connected to the second switch unit (310), and the second switch unit (310) is used to adjust the number of the output adjustment members (320) connected to the output end of the power amplifier module (100); The control module (400) is connected to the controlled end of the first switch unit (210) and the controlled end of the second switch unit (310), respectively.

2. The broadband power amplifier matching circuit according to claim 1, characterized in that: The first switch unit (210) comprises a first switch tube corresponding to the input adjustment component (220) on a one-to-one basis, the first switch tube being connected to the corresponding input adjustment component (220) to control the on / off of the input adjustment component (220) and the input end of the power amplifier module (100), and the control module (400) being connected to the controlled end of the first switch tube.

3. The broadband power amplifier matching circuit according to claim 2, characterized in that: The second switch unit (310) includes a second switch tube corresponding to the output adjustment component (320) on a one-to-one basis, the second switch tube being connected to the corresponding output adjustment component (320) to control the on / off of the output adjustment component (320) and the output end of the power amplifier module (100), and the control module (400) being connected to the controlled end of the second switch tube.

4. The broadband power amplifier matching circuit according to claim 3, characterized in that: The input matching module (200) further comprises an input adjustment inductor unit (230), the input adjustment member (220) is an input adjustment capacitor, the input adjustment inductor unit (230) is connected to the input end of the power amplifier module (100), and the input adjustment capacitor is connected to the input adjustment inductor unit (230); The output matching module (300) further comprises an output regulating inductor unit (330), the output regulating component (320) is an output regulating capacitor, the output regulating inductor unit (330) is connected to the output end of the power amplifier module (100), and the output regulating capacitor is connected to the output regulating inductor unit (330).

5. The broadband power amplifier matching circuit according to claim 4, characterized in that: The input regulating inductor unit (230) comprises a first inductor and a second inductor, one end of the first inductor is used to be connected to the signal input end, the other end of the first inductor is respectively connected to one end of the second inductor and one end of each input regulating capacitor, the other end of the input regulating capacitor is connected to one end of the corresponding first switching tube, the other end of the first switching tube is grounded, and the other end of the second inductor is connected to the input end of the power amplifier module (100).

6. The broadband power amplifier matching circuit according to claim 4, characterized in that: The output regulating inductor unit (330) comprises a third inductor and a fourth inductor, one end of the third inductor is connected to the output end of the power amplifier module (100), the other end of the third inductor is respectively connected to one end of the fourth inductor and one end of each output regulating capacitor, the other end of the output regulating capacitor is connected to one end of the corresponding second switching tube, the other end of the second switching tube is grounded, and the other end of the fourth inductor is used to be connected to the signal output end.

7. The broadband power amplifier matching circuit according to claim 1, characterized in that: The control module (400) comprises a connection interface (410), a memory (420) and an isolation drive unit (430); the connection interface (410) is provided with an address code terminal pin, the address code terminal pin is connected to the memory (420), the output end of the memory (420) is connected to the input end of the isolation drive unit (430), and the output end of the isolation drive unit (430) is connected to the controlled end of the first switch unit (210) and the controlled end of the second switch unit (310).

8. The broadband power amplifier matching circuit according to claim 1, characterized in that: It also includes a first basic matching unit (500) and a second basic matching unit (600), wherein the first basic matching unit (500) is connected to the input end of the power amplifier module (100), and the second basic matching unit (600) is connected to the output end of the power amplifier module (100).

9. The broadband power amplifier matching circuit according to claim 8, characterized in that: The first basic matching unit (500) comprises a fifth inductor, a first capacitor and a second capacitor, one end of the fifth inductor is connected to the input end of the power amplifier module (100), the other end of the fifth inductor is respectively connected to one end of the first capacitor and one end of the second capacitor, and the other end of the first capacitor and the other end of the second capacitor are grounded; The second basic matching unit (600) comprises a sixth inductor, a third capacitor and a fourth capacitor, one end of the sixth inductor is connected to the output end of the power amplifier module (100), the other end of the sixth inductor is respectively connected to one end of the third capacitor and one end of the fourth capacitor, and the other end of the third capacitor and the other end of the fourth capacitor are grounded.

10. A power amplifier device, characterized in that: The invention comprises a broadband power amplifier matching circuit according to any one of claims 1 to 9, and further comprises a signal input end and a signal output end, wherein the signal input end is connected to the input end of the power amplifier module (100) through the input matching module (200), and the output end of the power amplifier module (100) is connected to the signal output end through the output matching module (300).

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