Power amplifier, radio frequency module and base station

Abstract

The embodiments of the present disclosure relate to the technical field of radio frequency front-end power amplifiers. Provided are a power amplifier, a radio frequency module and a base station. The power amplifier comprises at least two driver-stage amplification components, at least three final-stage amplification components and a power distribution and isolation component, wherein the driver-stage amplification components and the final-stage amplification components are connected by means of the power distribution and isolation component; output ends of the final-stage amplification components are connected to an input end of an output matching unit; and input ends of the driver-stage amplification components are connected to an output end of a power distribution unit.

Description

Power amplifier, radio frequency module and base station

[0001] Cross-reference to related applications

[0002] The present application claims priority from the Chinese patent application No. 202410441763.3 filed on April 12, 2024, and entitled "Power amplifier, radio frequency module and base station", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of radio frequency front-end power amplifier, and particularly relates to a power amplifier, a radio frequency module and a base station. BACKGROUND

[0004] In the technical field of radio frequency front-end power amplifier, the power amplifier in the related art usually adopts a power amplification circuit of two-stage three-way Doherty architecture. FIG. 1 shows a schematic diagram of a power amplification circuit of Doherty architecture provided in the related art. As shown in FIG. 1, the power amplification circuit in the related art includes a power amplifier 1 and an output matching unit 2. The power amplifier 1 includes one push stage amplification component 11 and three final stage amplification components 12. The push stage amplification component 11 and the three final stage amplification components 12 are connected through a power distribution isolation component 13. The output ends of the three final stage amplification components 12 are connected with the output matching unit 2. The final stage amplification component 12 can include one final stage carrier stage amplification component and two final stage peak value amplification components, thereby forming a three-way Doherty. The push stage amplification component 11 usually adopts an AB class amplifier device.

[0005] The present inventors have noticed that, as a module with the largest power consumption in a transmitter system, the power amplifier should have as high a conversion efficiency as possible to improve energy utilization and reduce power consumption. Although the efficiency of the power amplifier is mainly determined by the final stage, it is significant to improve the efficiency of the final stage, but the efficiency improvement of the push stage power amplifier cannot be ignored. The power amplifier in the related art has the advantage of simple structure, but due to the requirement of radio frequency performance, the output power of the push stage amplification component 11 is large, and thus the output current of the push stage amplification component 11 is large. The conversion efficiency of the push stage is limited, and the overall efficiency of the power amplifier is low, which is not conducive to energy saving and consumption reduction of the device or transmitter system using the power amplifier. SUMMARY

[0006] The purpose of the embodiments of the present disclosure is to provide a power amplifier, a radio frequency module and a base station.

[0007] According to a first aspect of the embodiments of the present disclosure, a power amplifier is provided, which comprises at least two push stage amplification components, at least three final stage amplification components, and a power distribution isolation component, the push stage amplification components and the final stage amplification components are connected through the power distribution isolation component, an output end of the final stage amplification components is connected with an input end of an output matching unit, and an input end of the push stage amplification components is connected with an output end of a power distribution unit.

[0008] According to a second aspect of the embodiments of the present disclosure, a radio frequency module is provided, which comprises the power amplifier of the first aspect.

[0009] According to a third aspect of the embodiments of the present disclosure, a base station is provided, which comprises at least one radio frequency module, and the radio frequency module comprises the power amplifier of any one of claims 1 to 8. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present disclosure, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0011] FIG. 1 shows a Doherty architecture power amplification circuit schematic diagram provided in the related art;

[0012] FIG. 2 shows a power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0013] FIG. 3 shows another power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0014] FIG. 4 shows another power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0015] FIG. 5 shows another power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0016] FIG. 6 shows another power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0017] FIG. 7 shows another power amplification circuit schematic diagram provided by an embodiment of the present disclosure;

[0018] FIG. 8 shows a schematic diagram of a radio frequency module provided by an embodiment of the present disclosure.

[0019] FIG. 9 shows a schematic diagram of a base station provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0020] In order to make the person skilled in the art better understand the technical solutions in the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in the embodiments of the present disclosure in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all. Based on the embodiments in the present disclosure, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present disclosure.

[0021] Fig. 2 shows a schematic diagram of a power amplification circuit provided by an embodiment of the present disclosure. As shown in Fig. 2, the power amplifier 3 provided by the embodiment of the present disclosure includes at least two push stage amplification components 11, at least three final stage amplification components 12 and a power distribution isolation component 13. The at least two push stage amplification components 11 and the at least three final stage amplification components 12 are connected through the power distribution isolation component 13. The output end of the final stage amplification component 12 is connected with the input end of the output matching unit 2. The input end of the push stage amplification component 11 is connected with the output end of the power distribution unit 4.

[0022] In some embodiments, the push stage amplification component can include one push stage carrier wave amplification component and at least one push stage peak value amplification component. The final stage amplification component can include one final stage carrier wave amplification component and at least two final stage peak value amplification components.

[0023] In some possible implementations, the push stage amplification component can be an amplifier device or a sub-amplification circuit capable of replacing the function of the amplifier device. The final stage amplification component can be an amplifier device or a sub-amplification circuit capable of replacing the function of the amplifier device. The present disclosure does not limit this.

[0024] Specifically, the push stage carrier wave amplification component can include an AB class amplifier device or sub-amplification circuit. The final stage carrier wave amplification component can include an AB class amplifier device or sub-amplification circuit. The push stage peak value amplification component can include a C class amplifier device, a B class amplifier device or sub-amplification circuit. The final stage peak value amplification component can include a C class amplifier device, a B class amplifier device or sub-amplification circuit. It can be understood that the person skilled in the art can also select other alternative amplifier devices as the push stage carrier wave amplification component, the final stage carrier wave amplification component, the push stage peak value amplification component or the final stage peak value amplification component based on the need for performance improvement. The present disclosure does not limit this.

[0025] The technical scheme is adopted, the output power of the added amplification component is shared by the push stage (or the push stage and the final stage), a power amplifier device with smaller output power and / or higher amplification efficiency can be used under the same output power level, the saturation power requirement of the push stage amplification component is reduced, and the amplification efficiency of the push stage and the overall power amplifier can be improved due to the reduced output power and the reduced output current.

[0026] The one push stage carrier wave amplification component, the at least one push stage peak value amplification component, the one final stage carrier wave amplification component and the at least two final stage peak value amplification components can flexibly form one main amplification circuit and at least one auxiliary amplification circuit. The push stage amplification component and the final stage amplification component can be connected by independent power distribution isolation components between the main amplification circuit and the auxiliary amplification circuit, and the power distribution isolation components used by different amplification circuits can be the same or different according to the number of connected final stage amplification components.

[0027] In some embodiments, the power amplifier includes a main amplification circuit and at least one auxiliary amplification circuit, the power distribution isolation component includes a first power distribution isolation component and a second power distribution isolation component, the main amplification circuit includes a push stage carrier wave amplification component and a final stage carrier wave amplification component, and the push stage carrier wave amplification component and the final stage carrier wave amplification component are connected by the first power distribution isolation component. In some possible implementations, the first power distribution isolation component can be a power isolation device.

[0028] The power amplifier can further include one or more auxiliary amplification circuits. When the number of auxiliary amplification circuits is more than one, at least one auxiliary amplification circuit includes a push stage peak value amplification component and a plurality of final stage peak value amplification components, the push stage peak value amplification component and the plurality of final stage peak value amplification components are connected by a second power distribution isolation component, each of the remaining auxiliary amplification circuits includes a push stage peak value amplification component, one or more final stage peak value amplification components and a second power distribution isolation component, the push stage peak value amplification component and the final stage peak value amplification component are connected by the second power distribution isolation component, the second power distribution isolation component can be a power isolation device when the auxiliary amplification circuit includes one final stage peak value amplification component, and the second power distribution isolation component can be a power isolation distribution device when the auxiliary amplification circuit includes a plurality of final stage peak value amplification components.

[0029] Figure 3 shows another power amplifier circuit diagram provided by the embodiments of the present disclosure. As shown in Figure 3, the power amplifier 3 includes a main amplification circuit and an auxiliary amplification circuit, the power distribution isolation component 13 includes a first power distribution isolation component 131 and a second power distribution isolation component 132, the main amplification circuit includes a push stage carrier amplification component 111 and a final stage carrier amplification component 121, the push stage carrier amplification component 111 and the final stage carrier amplification component 121 are connected through the first power distribution isolation component 131, and the first power distribution isolation component 131 can be a power isolation device. The auxiliary amplification circuit includes a push stage peak amplification component 112 and two final stage peak amplification components 122, the push stage peak amplification component 112 and the two final stage peak amplification components 122 are connected through the second power distribution isolation component 132, and in some possible implementation manners, the second power distribution isolation component can be a power distribution isolation device.

[0030] In some possible implementation manners, the push stage carrier amplification component 111 and the final stage carrier amplification component 121 can adopt class AB amplifier devices or sub-amplification circuits, the push stage peak amplification component 112 and the two final stage peak amplification components 122 can adopt class C amplifier devices, class B amplifier devices or sub-amplification circuits, different amplification components can adopt the same type of devices or sub-amplification circuits or different types of devices or sub-amplification circuits, and the present application does not make any limitation in this regard. The increase of the push stage peak amplification component 112 causes the output power of the push stage carrier amplification component 111 to decrease and the output current to decrease, thereby improving the efficiency of the power amplifier 3. Since the class C or class B amplifier devices adopted by the auxiliary amplification circuit have relatively high efficiency, the efficiency of the power amplifier 3 can be further improved.

[0031] By using the technical solutions described above, the output power of the push stage is shared by the increased push stage peak amplification component, the power amplifier device with smaller output power and / or higher amplification efficiency can be used at the same output power level, the saturation power requirement of the push stage amplification component is reduced, and since the output power of the push stage is reduced and the output current is decreased, the amplification efficiency of the overall power amplifier is effectively improved. The efficiency improvement of the power amplifier can greatly promote the energy saving and consumption reduction of the device or system using the power amplifier.

[0032] In another embodiment, the power amplifier can include a main amplification circuit and at least one auxiliary amplification circuit, the power distribution isolation component includes a third power distribution isolation component and a fourth power distribution isolation component, the final stage peak amplification component includes a first final stage peak amplification component and a second final stage peak amplification component, the main amplification circuit includes a push stage carrier amplification component, a final stage carrier amplification component and at least one first final stage peak amplification component, the final stage carrier amplification component and the at least one first final stage peak amplification component are connected to the push stage carrier amplification component through the third power distribution isolation component in parallel, and the third power distribution isolation component can be a power distribution isolation device. Each auxiliary amplification circuit includes a push stage peak amplification component and at least one second final stage peak amplification component, and the push stage peak amplification component and the at least one second final stage peak amplification component are connected through the fourth power distribution isolation component. The push stage amplification component and the final stage amplification component can be connected between the main amplification circuit and the auxiliary amplification circuit by using independent power distribution isolation components, and the power distribution isolation components used by different amplification circuits can be the same or different according to the number of connected final stage amplification components. In the case where the number of second final stage peak amplification components corresponding to the auxiliary amplification circuit is one, the fourth power distribution isolation component is a power isolation device; or in the case where the number of second final stage peak amplification components corresponding to the auxiliary amplification circuit is multiple, the fourth power distribution isolation component is a power distribution isolation device.

[0033] Fig. 4 shows another power amplification circuit provided by the embodiment of the present disclosure, as shown in Fig. 4, the power amplifier 3 includes a main amplification circuit and an auxiliary amplification circuit, the power distribution isolation component includes a third power distribution isolation component 133 and a fourth power distribution isolation component 134, the final stage peak amplification component includes a first final stage peak amplification component 123 and a second final stage peak amplification component 124, the main amplification circuit includes a push stage carrier amplification component 111, a final stage carrier amplification component 121 and a first final stage peak amplification component 123, the final stage carrier amplification component 121 and the first final stage peak amplification component 123 are connected to the push stage carrier amplification component 111 through the third power distribution isolation component 133 in parallel, and the third power distribution isolation component 133 can be a power distribution isolation device. The auxiliary amplification circuit includes a push stage amplification component 112 and a second final stage peak amplification component 124, the push stage peak amplification component 112 and the second final stage peak amplification component 124 are connected through the fourth power distribution isolation component 134, and the fourth power distribution isolation component 134 can be a power isolation device.

[0034] The technical scheme is adopted, the output power of the pushing stage is shared by the added pushing stage amplification assembly, and a power amplifier device with smaller output power and / or higher amplification efficiency can be used under the same output power level, so that the saturation power requirement of the pushing stage amplification assembly is reduced; meanwhile, the output power is reduced, the output current is reduced, and the amplification efficiency of the overall power amplifier is effectively improved. The efficiency improvement of the power amplifier can greatly promote the energy saving and consumption reduction of the device or system using the power amplifier.

[0035] Fig. 5 shows another power amplification circuit provided by the embodiment of the present disclosure. As shown in Fig. 5, the power amplifier 3 includes a main amplification circuit and an auxiliary amplification circuit, the power distribution isolation assembly includes a third power distribution isolation assembly 133 and a fourth power distribution isolation assembly 134, the final stage peak amplification assembly includes a first final stage peak amplification assembly 123 and a second final stage peak amplification assembly 124, the main amplification circuit includes a pushing stage carrier amplification assembly 111, a final stage carrier amplification assembly 121, and a first final stage peak amplification assembly 123, the final stage carrier amplification assembly 121 and the first final stage peak amplification assembly 123 are connected with the pushing stage carrier amplification assembly 111 through the third power distribution isolation assembly 133 in parallel, and the third power distribution isolation assembly 133 is a power distribution isolation device. The auxiliary amplification circuit includes a pushing stage amplification assembly 112 and two second final stage peak amplification assemblies 124, the pushing stage peak amplification assembly 112 and the two second final stage peak amplification assemblies 124 are connected through the fourth power distribution isolation assembly 134, and the fourth power distribution isolation assembly 134 can be a power distribution isolation device.

[0036] The technical scheme is adopted, the output power of the pushing stage is shared by the added pushing stage amplification assembly, and a power amplifier device with smaller output power and / or higher amplification efficiency can be used under the same output power level, so that the saturation power requirement of the pushing stage amplification assembly is reduced; meanwhile, the output power is reduced, the output current is reduced, and the amplification efficiency of the overall power amplifier is effectively improved. The efficiency improvement of the power amplifier can greatly promote the energy saving and consumption reduction of the device or system using the power amplifier. The main amplification circuit and the auxiliary amplification circuit both use two amplification assemblies in parallel to push, which can avoid multiple power distribution of the output in the case of single amplification assembly pushing, and form four-way Doherty in the final stage pushing, so as to ensure high peak-to-average ratio signals and maintain high amplification efficiency, and meet the requirement of high power backoff and high amplification efficiency.

[0037] Fig. 6 shows another power amplifier circuit provided by the embodiment of the present disclosure, as shown in Fig. 6, the power amplifier 3 includes one main amplification circuit and two auxiliary amplification circuits, the power distribution isolation component includes a third power distribution isolation component 133 and two fourth power distribution isolation components 134, the final peak amplification component includes a first final peak amplification component 123 and a second final peak amplification component 124, the main amplification circuit includes a push stage carrier amplification component 111, a final carrier amplification component 121 and a first final peak amplification component 123, the final carrier amplification component 121 and the first final peak amplification component 123 are connected in parallel and then connected with the push stage carrier amplification component 111 through the third power distribution isolation component 133, wherein the third power distribution isolation component 133 is a power distribution isolation device. Each auxiliary amplification circuit includes a push stage amplification component 112 and a second final peak amplification component 124, the push stage peak amplification component 112 and the second final peak amplification component 124 are connected through the fourth power distribution isolation component 134, and in this embodiment, the fourth power distribution isolation component 134 can be a power isolation device.

[0038] In some possible implementations, the power amplification components of the auxiliary amplification circuits of Figs. 4 to 6 can adopt class-C amplification devices, the push stage carrier amplification component and the final carrier amplification component of the main amplification circuit can adopt class-AB amplification devices, and the first final peak amplification component and the second final peak amplification component can also adopt class-C amplification devices. One or more of the above-mentioned class-C amplification devices can also be alternatively implemented by class-B amplification devices or sub-amplification circuits, and the above-mentioned class-AB amplification devices can also be alternatively implemented by sub-amplification circuits, and the present disclosure does not limit this.

[0039] By using the above technical solutions, the output power of the push stage is shared by the increased push stage amplification components, and the output power of the final stage is shared by the increased final amplification components, so that the power amplification devices with smaller output power and / or higher amplification efficiency can be used under the same output power level, and the saturation power requirement of the push stage amplification component is reduced. At the same time, due to the reduction of the push stage output power and the reduction of the output current, the amplification efficiency of the overall power amplifier is effectively improved. The efficiency improvement of the power amplifier can greatly promote the energy saving and consumption reduction of the device or system using the power amplifier. After using multiple auxiliary amplification circuits, the fourth power distribution isolation component 134 can save the power distribution function and be implemented by using a power isolation device, which can further reduce the layout complexity while improving the power amplifier efficiency.

[0040] In some embodiments, the push stage peak amplification component and the final stage peak amplification component can be further expanded to flexibly change according to the actual application scenario. FIG. 7 shows another power amplifier circuit schematic diagram provided by an embodiment of the present disclosure. As shown in FIG. 7, the power amplifier 3 includes one push stage carrier amplification component 111, m push stage peak amplification components, one final stage carrier amplification component 121, and n final stage peak amplification components 122, where n > m > 2. The push stage amplification component and the final stage amplification component are connected through the power distribution isolation component 13.

[0041] In a possible implementation, the power amplifier 3 can include one main amplification circuit and m auxiliary amplification circuits. The main amplification circuit can include one push stage carrier amplification component 111 and one final stage carrier amplification component 121. The push stage carrier amplification component 111 and the final stage carrier amplification component 121 form the main amplification circuit through the power isolation component. In another possible implementation, the main amplification circuit can include one push stage carrier amplification component 111, one final stage carrier amplification component 121, and at least one final stage peak amplification component 122. The final stage carrier amplification component 121 and the at least one final stage peak amplification component 122 are connected in parallel and then connected to the push stage carrier amplification component 111 through the power distribution isolation component. Each auxiliary amplification circuit can include one push stage peak amplification component 112 and at least one final stage peak amplification component 122. The push stage peak amplification component 112 and the at least one final stage peak amplification component 122 are connected through the power distribution isolation component. The power distribution isolation component can include m+1 independent power distribution isolation devices / power isolation devices. The power distribution isolation devices / power isolation devices are used to connect the push stage amplification component and the final stage amplification component in each amplification circuit. In the case where the number of final stage amplification components corresponding to the amplification circuit is one, the power isolation device can be used to connect the push stage amplification component and the final stage amplification component. Alternatively, in the case where the number of final stage amplification components corresponding to the amplification circuit is one, the power distribution isolation device can be used to connect the push stage amplification component and the final stage amplification component.

[0042] By means of the technical scheme, the output power of the push stage amplification assembly is shared by the added push stage amplification assembly, and the output power of the final stage amplification assembly is shared by the added final stage amplification assembly, so that a power amplifier device with smaller output power and / or higher amplification efficiency can be used under the same output power level, and the saturation power requirement of the push stage amplification assembly is reduced; meanwhile, the output power of the push stage is reduced, the output current is reduced, and the amplification efficiency of the overall power amplifier is effectively improved. The efficiency improvement of the power amplifier can greatly promote the energy saving and consumption reduction of the device or system using the power amplifier. By flexibly setting the number of the push stage amplification assembly and the final stage amplification assembly, the multi-stage and multi-path power amplifier structure is diversified, and can adapt to different application scenarios, thereby further improving the adaptability of the application scenario while improving the power amplification efficiency of the power amplifier.

[0043] FIG. 8 shows a schematic diagram of a radio frequency module according to an embodiment of the present disclosure. As shown in FIG. 8, the radio frequency module 20 can include the power amplifier 3 according to any of the embodiments of the first aspect. FIG. 9 shows a schematic diagram of a base station according to an embodiment of the present disclosure. As shown in FIG. 9, the base station 30 can include at least one radio frequency module 20 according to the second aspect. The radio frequency module 20 can include the power amplifier 3 according to any of the embodiments of the first aspect.

[0044] By means of the technical scheme, the efficiency of the power amplifier is improved, and the energy saving and consumption reduction of the radio frequency module and the base station using the power amplifier are greatly promoted.

[0045] It should be understood that any of the power amplifiers and radio frequency modules provided by the embodiments of the present disclosure can be applied in the field of wireless communication, but are not limited thereto. For example, the radio frequency module or the radio frequency signal transceiver device can be located in a base station system or a radar system. The base station system can be an integrated base station, a distributed base station, a remote base station, or the like, and the embodiments of the present disclosure are not limited thereto.

[0046] It should also be noted that the terms “comprising”, “containing” or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or device. Without more limitations, the element defined by the phrase “comprising a” does not exclude the presence of additional identical elements in the process, method, article or device including the element.

[0047] The various embodiments in the specification are described in progressive manner, and the same or similar parts among the various embodiments can be mutually referred to, and each embodiment focuses on the difference from other embodiments. It can be understood that the above-described specific implementation is only an exemplary embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power amplifier, wherein: The power amplifier includes at least two driving stage amplifying components, at least three final stage amplifying components and a power distribution isolation component. The driving stage amplifying component and the final stage amplifying component are connected through the power distribution isolation component. The output end of the final stage amplifying component is connected to the input end of the output matching unit, and the input end of the driving stage amplifying component is connected to the output end of the power distribution unit.

2. The power amplifier according to claim 1, wherein: The driving stage amplifying component includes a driving stage carrier amplifying component and at least one driving stage peak amplifying component, and the final stage amplifying component includes a final stage carrier amplifying component and at least two final stage peak amplifying components.

3. The power amplifier according to claim 2, wherein: The power amplifier includes a main amplifying circuit and at least one auxiliary amplifying circuit, the power distribution isolation component includes a first power distribution isolation component and a second power distribution isolation component, the main amplifying circuit includes the driving stage carrier amplifying component and the final stage carrier amplifying component, the driving stage carrier amplifying component and the final stage carrier amplifying component are connected through the first power distribution isolation component, at least one auxiliary amplifying circuit includes one driving stage peak amplifying component and multiple final stage peak amplifying components, the driving stage peak amplifying component and the multiple final stage peak amplifying components are connected through the second power distribution isolation component.

4. The power amplifier according to claim 3, wherein: The first power distribution isolation component is a power isolation device, and the second power distribution isolation component is a power distribution isolation device.

5. The power amplifier according to claim 2, wherein: The power amplifier includes a main amplifying circuit and at least one auxiliary amplifying circuit, the power distribution isolation component includes a third power distribution isolation component and a fourth power distribution isolation component, the final-stage peak amplifying component includes a first final-stage peak amplifying component and a second final-stage peak amplifying component, the main amplifying circuit includes the driving-stage carrier amplifying component, the final-stage carrier amplifying component and at least one first final-stage peak amplifying component, the final-stage carrier amplifying component and the at least one first final-stage peak amplifying component are connected in parallel with the driving-stage carrier amplifying component through the third power distribution isolation component, each of the auxiliary amplifying circuits includes a driving-stage peak amplifying component and at least one second final-stage peak amplifying component, the driving-stage peak amplifying component and the at least one second final-stage peak amplifying component are connected through the fourth power distribution isolation component. The power amplifier according to claim 5 , wherein: The third power distribution isolation component is a power distribution isolation device; In the case where the number of the second final-stage peak amplifying components corresponding to the auxiliary amplifying circuit is one, the fourth power distribution isolation component is a power isolation device; or, In the case that the auxiliary amplifier circuit has a plurality of second final-stage peak amplifier components, the fourth power distribution isolation component is a power distribution isolation device.

7. The power amplifier according to any one of claims 1 to 6, wherein: The driving stage amplifying component is an amplifying device or a sub-amplifying circuit, and the final stage amplifying component is an amplifying device or a sub-amplifying circuit.

8. The power amplifier according to any one of claims 2 to 6, wherein: The driving-stage carrier amplifying component includes a class AB amplifier device or a sub-amplifying circuit, the final-stage carrier amplifying component includes a class AB amplifier device or a sub-amplifying circuit, the driving-stage peak amplifying component includes a class C amplifier device, a class B amplifier device or a sub-amplifying circuit, and the final-stage peak amplifying component includes a class C amplifier device, a class B amplifier device or a sub-amplifying circuit.

9. A radio frequency module, wherein: The power amplifier comprises the power amplifier according to any one of claims 1 to 8.

10. A base station, wherein: The method comprises at least one radio frequency module, wherein the radio frequency module comprises the power amplifier according to any one of claims 1 to 8.

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