Power amplifier integrated circuit and power amplifier device

Abstract

The utility model discloses a power amplifier integrated circuit and a power amplifier device. The power amplifier integrated circuit comprises a carrier power amplifier module, at least two peak power amplifier modules and a tube shell, the carrier power amplifier module and the peak power amplifier module are packaged in the tube shell; the tube shell is provided with a first port; the peak power amplifier module comprises a peak amplifier, a grid electrode of the peak amplifier is electrically connected with a first port, and the first port is used for being connected with a first direct-current power source. According to the technical scheme provided by the embodiment of the utility model, the number of power supplies can be reduced, the miniaturization of a circuit is facilitated, and meanwhile, the carrier power amplifier module and the plurality of peak power amplifier modules are packaged in the same tube shell, so that the debugging difficulty and complexity are remarkably reduced, and the layout of a peripheral circuit board is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of power amplification, in particular to a power amplifier integrated circuit and a power amplifier device. Background Art

[0002] As a method to improve fallback efficiency, Doherty architecture is widely used in the field of wireless communication base station power amplifiers. In particular, the rapid development of 5G in recent years has further increased the technical requirements for RF power amplifiers.

[0003] The traditional three-way Doherty architecture usually packages a carrier power amplifier and a peak power amplifier in one tube shell, and another peak power amplifier in another tube shell. The gates of the amplifiers in these two tube shells need to be powered by independent DC power supplies because of different voltage levels, which is not conducive to the miniaturization of the overall circuit. In addition, when setting each tube shell on the PCB board for external circuit design, it is necessary to comprehensively consider the connection relationship between each tube shell, so the external circuit design of the tube shell is complex and difficult to debug. How to reduce the complexity of the external circuit design of the tube shell and improve the degree of circuit integration has become an urgent problem to be solved. Utility Model Content

[0004] The utility model provides a power amplifier integrated circuit and a power amplifier device, so as to solve the technical problems that the traditional Doherty structure has more packaging tube shells and the external matching circuit design is complicated.

[0005] According to one aspect of the utility model, a power amplifier integrated circuit is provided, comprising a carrier power amplifier module, at least two peak power amplifier modules and a tube shell; the carrier power amplifier module and the peak power amplifier module are packaged in the tube shell;

[0006] The tube shell is provided with a first port; the peak power amplifier module includes a peak amplifier, and the gate of the peak amplifier in each of the peak power amplifier modules is electrically connected to the first port, and the first port is used to connect a first DC power supply.

[0007] Optionally, the carrier power amplifier module includes a carrier amplifier, a first input matching circuit and a first output matching circuit;

[0008] The input end of the carrier amplifier is electrically connected to the output end of the first input matching circuit, and the output end of the carrier amplifier is electrically connected to the input end of the first output matching circuit;

[0009] The tube shell is also provided with a second port, the second port is electrically connected to the gate of the carrier amplifier, and the second port is used to connect to a second DC power supply.

[0010] Optionally, a third port is further provided on the tube shell, the third port is electrically connected to the input end of the first input matching circuit, and the third port is used to input a radio frequency signal to the carrier amplifier.

[0011] Optionally, a fourth port is further provided on the tube shell, the fourth port is electrically connected to the output end of the first output matching circuit, the fourth port is used to output a radio frequency signal for the carrier amplifier, and the fourth port is also used to connect a third DC power supply.

[0012] Optionally, the peak power amplifier module further includes a second input matching circuit and a second output matching circuit;

[0013] The input end of the peak amplifier is electrically connected to the output end of the second input matching circuit, and the output end of the peak amplifier is electrically connected to the input end of the second output matching circuit;

[0014] The tube shell is also provided with a fifth port, the fifth port is electrically connected to the input end of the peak amplifier, and the fifth port is used to input a radio frequency signal to the peak amplifier.

[0015] Optionally, the power amplifier integrated circuit further includes a first input shunt module, and the first input shunt is packaged in the tube shell;

[0016] An input end of the first input branch module is electrically connected to the fifth port, and an output end of the first input branch module is electrically connected to an input end of the second input matching circuit.

[0017] Optionally, a sixth port is further provided on the tube shell, the sixth port is electrically connected to the output end of the peak amplifier, and the sixth port is used to output a radio frequency signal for the peak amplifier; the sixth port is used to connect a third DC power supply.

[0018] Optionally, the power amplifier integrated circuit further includes a first output combining module, and the first output combining module is packaged in the tube shell;

[0019] An input end of the first output combining module is electrically connected to an output end of the second output matching circuit, and an output end of the first output combining module is electrically connected to the sixth port.

[0020] According to another aspect of the present invention, a power amplifier device is provided, comprising the power amplifier integrated circuit described in the first aspect.

[0021] Optionally, the power amplifier device further includes a second input branch and / or a second output combiner.

[0022] The second input shunt output end is electrically connected to the third port and the fifth port, and the second input shunt input end is used to connect an external radio frequency signal;

[0023] The second output combining input end is electrically connected to the fourth port and the sixth port, and the second output combining output end is used to output the radio frequency signal processed by the carrier power amplifier module and the peak power amplifier module.

[0024] The technical solution of the embodiment of the utility model adopts the Doherty architecture, encapsulates at least two peak power amplifier modules and one carrier power amplifier module inside the tube shell, and connects the gates of the peak power amplifiers in the multiple peak power amplifier modules to the first port on the tube shell. When powering, the first DC power supply can be connected through the first port to power multiple peak power amplifiers in the tube shell at the same time, which reduces the number of power supplies, is conducive to miniaturization of the circuit, and significantly reduces packaging and development costs. The technical solution of this embodiment encapsulates at least two peak power amplifier modules and one carrier power amplifier module inside the tube shell. When the tube shell is set on a PCB board for external circuit design, compared with the traditional solution of setting multiple tube shells on a PCB board to design external circuits, the difficulty and complexity of debugging are significantly reduced, which is convenient for the layout of the peripheral circuit board.

[0025] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present utility model, nor are they intended to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 A schematic diagram of the structure of a power amplifier integrated circuit provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the structure of another power amplifier integrated circuit provided by an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of the structure of another power amplifier integrated circuit provided by an embodiment of the utility model;

[0030] Figure 4A schematic diagram of the structure of a power amplifier device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Figure 1 A schematic diagram of the structure of a power amplifier integrated circuit provided by the embodiment of the utility model, referring to Figure 1 The power amplifier integrated circuit includes a carrier power amplifier module 110, at least two peak power amplifier modules 120 and a tube shell 130; the carrier power amplifier module 110 and the peak power amplifier module 120 are packaged in the tube shell 130; a first port 101 is provided on the tube shell 130; the peak power amplifier module 120 includes a peak amplifier 121, and the gate of the peak amplifier 121 in each peak power amplifier module 120 is electrically connected to the first port 101, and the first port 101 is used to connect a first DC power supply.

[0034] Specifically, the power amplifier integrated circuit can be a Doherty architecture, including a carrier power amplifier module 110 and at least two peak power amplifier modules 120. The gate of the peak amplifier 121 in each peak power amplifier module is electrically connected to the first port 101 of the tube shell 130. The first port 101 can be a pin interface on the tube shell 130, and the first DC power supply connects the gates of multiple peak amplifiers 121 through the first port 101 to power the multiple peak amplifiers 121. The carrier power amplifier module 110 and the multiple peak power amplifier modules 120 are integrated and packaged in the tube shell 130, and the tube shell can adopt the existing 780-6-Vlead tube shell and reuse it. Compared with the prior art that the carrier amplifier and a peak amplifier are packaged in one tube shell, and the other peak power amplifier is packaged in another tube shell, and then set on the PCB, the tube shell 130 can be packaged as a whole on the PCB board when designing the external circuit, without the need to comprehensively consider multiple tube shells, thereby reducing the design complexity of the external circuit of the tube shell, reducing the number of packaged tube shells and the packaging cost, and facilitating the miniaturization of the overall circuit. It should be noted that Figure 1 In the example, two peak amplifiers are provided, and the number of the peak amplifiers is not specifically limited in this embodiment. Further, when there are multiple peak amplifiers, it is necessary to ensure that the gates of all the peak amplifiers are connected to the first port and powered by the first DC power supply.

[0035] The technical solution of this embodiment adopts the Doherty architecture, encapsulates at least two peak power amplifier modules and one carrier power amplifier module inside the tube shell, and connects the gates of the peak power amplifiers in the multiple peak power amplifier modules to the first port on the tube shell. The technical solution of this embodiment can connect the first DC power supply through the first port to power multiple peak power amplifiers in the tube shell at the same time when powering, which reduces the number of power supplies, is conducive to miniaturization of the circuit, and significantly reduces packaging and development costs. The technical solution of this embodiment encapsulates at least two peak power amplifier modules and one carrier power amplifier module inside the tube shell. When the tube shell is set on the PCB board for external circuit design, compared with the traditional solution of setting multiple tube shells on the PCB board to design the external circuit, it is not necessary to comprehensively consider the connection relationship between the multiple tube shells, which significantly reduces the difficulty and complexity of debugging and facilitates the layout of the peripheral circuit board.

[0036] Optionally, Figure 2 A schematic diagram of the structure of another power amplifier integrated circuit provided by the embodiment of the utility model. Figure 2The carrier power amplifier module 110 includes a carrier amplifier 111, a first input matching circuit 112 and a first output matching circuit 113; the input end of the carrier amplifier 111 is electrically connected to the output end of the first input matching circuit 112, and the output end of the carrier amplifier 111 is electrically connected to the input end of the first output matching circuit 113; a second port 102 is also provided on the tube shell 130, the second port 102 is electrically connected to the gate of the carrier amplifier 111, and the second port 102 is used to connect a second DC power supply.

[0037] Specifically, the first input matching circuit 112 is used to ensure impedance matching between the RF signal and the carrier amplifier 111, reduce reflection loss, thereby improving the transmission efficiency and quality of the signal, and ensure that the RF signal can effectively enter the carrier power amplifier and be amplified. The output end of the first input matching circuit 112 is electrically connected to the input end of the carrier amplifier 111, and the RF signal is transmitted to the carrier amplifier 111 through the first input matching circuit 112 to amplify the signal. The signal amplified by the carrier amplifier 111 is transmitted to the input end of the first output matching circuit 113 through the output end, and the first output matching circuit 113 outputs the amplified signal to the subsequent connected load. The first output matching circuit 113 is used to ensure impedance matching between the carrier amplifier 111 and the subsequent connected load, thereby maximizing power transfer efficiency, reducing power loss, and improving the overall performance of the system. The second port 102 can be a pin interface on the tube shell 130, and the second DC power supply is connected to the gate of the carrier amplifier 111 through the second port 102 to power the carrier amplifier 111. By such an arrangement, the gate of the carrier amplifier 111 and the gates of all the peak amplifiers 121 in the tube shell 130 can be powered by only two DC power sources, that is, the second DC power supply supplies power to the carrier amplifier 111 through the second port 102, and the first DC power supply supplies power to the peak amplifier 121 through the first port 101, thereby improving the overall integration of the power amplifier integrated circuit, facilitating the miniaturization of the overall circuit, and significantly reducing packaging costs and design and development costs.

[0038] Optionally, based on the above embodiment, Figure 2 The tube shell 130 is also provided with a third port 103 , which is electrically connected to the input end of the first input matching circuit 112 . The third port 103 is used to input a radio frequency signal to the carrier amplifier 111 .

[0039] Specifically, the third port 103 can be a pin interface on the tube shell 130. The external RF signal source transmits the RF signal to the first input matching circuit 112 through the third port 103. The RF signal is input matched by the first input matching circuit 112 and then transmitted to the input end of the carrier amplifier 111 for signal amplification processing.

[0040] Optionally, based on the above embodiment, Figure 2 The tube shell 130 is also provided with a fourth port 104 , which is electrically connected to the output end of the first output matching circuit 113 , and is used to output a radio frequency signal to the carrier amplifier 111 . The fourth port 104 is also used to connect to a third DC power supply.

[0041] Specifically, the fourth port 104 can be a pin interface on the tube shell 130, and the fourth port 104 is electrically connected to the output end of the first output matching circuit 113, and transmits the RF signal amplified by the carrier amplifier 111 to the subsequent connected load. At the same time, the fourth port 104 can also be connected to the third DC power supply to power the drain of the carrier amplifier 111.

[0042] Optionally, based on the above embodiment, Figure 2 The peak power amplifier module 120 further includes a second input matching circuit 122 and a second output matching circuit 123; the input end of the peak amplifier 121 is electrically connected to the output end of the second input matching circuit 122, and the output end of the peak amplifier 121 is electrically connected to the input end of the second output matching circuit 123; the tube shell 130 is also provided with a fifth port 105, the fifth port 105 is electrically connected to the input end of the peak amplifier 121, and the fifth port 105 is used to input a radio frequency signal to the peak amplifier 121.

[0043] Specifically, the second input matching circuit 122 is used to ensure impedance matching between the RF signal and the peak amplifier 121, reduce reflection loss, thereby improving the transmission efficiency and quality of the signal, and ensure that the RF signal can effectively enter the peak power amplifier and be amplified. The output end of the second input matching circuit 122 is electrically connected to the input end of the peak amplifier 121, and the RF signal is transmitted to the peak amplifier 121 through the second input matching circuit 122 to amplify the signal. The signal amplified by the peak amplifier 121 is transmitted to the input end of the second output matching circuit 123 through the output end, and the second output matching circuit 123 outputs the amplified signal to the subsequent connected load. The second output matching circuit 123 is used to ensure impedance matching between the peak amplifier 121 and the subsequent connected load, thereby maximizing power transfer efficiency, reducing power loss, and improving the overall performance of the system. The fifth port 105 can be a pin interface on the tube shell 130, and the external RF signal source transmits the RF signal to the second input matching circuit 122 through the fifth port 105, and after the RF signal is input matched by the second input matching circuit 122, it is transmitted to the input end of the peak power amplifier 122 for signal amplification.

[0044] Optionally, Figure 3A schematic diagram of the structure of another power amplifier integrated circuit provided by the embodiment of the utility model. Figure 3 The power amplifier integrated circuit also includes a first input shunt module 140, which is packaged in a tube shell; the input end of the first input shunt module 140 is electrically connected to the fifth port 105, and the output end of the first input shunt module 140 is electrically connected to the input end of the second input matching circuit 122.

[0045] Specifically, the first input branch module 140 can divide the RF signal from a single source into multiple branches and transmit them to the amplification channels of multiple peak amplifiers 121 for processing, thereby realizing parallel processing of signals and improving signal processing capability and efficiency. The first input branch 140 is encapsulated inside the tube shell, and the RF signal source transmits the RF signal to the input end of the first input branch module 140 through the fifth port 105. The first input branch module 140 transmits the branched RF signal to the peak amplifier 121 through the second input matching circuit 122 for signal amplification processing. It should be noted that Figure 3 In the embodiment, two peak amplifiers are exemplarily provided. The number of peak power amplifiers is not specifically limited in this embodiment. When there are multiple peak power amplifiers, it is necessary to ensure that the input ends of the multiple peak power amplifiers are connected to the output end of the first input branch module 140, so as to transmit the RF signal to the multiple peak power amplifiers. After the multiple peak amplifiers 121 are connected inside the tube shell 130 through the first input branch module 140, the carrier amplifier 111 and the multiple peak amplifiers 121 in the tube shell form a dual power amplifier tube. Therefore, after the tube shell is set on the PCB board, the difficulty of designing and debugging the peripheral circuit can be reduced, so as to facilitate the design and development of the peripheral circuit.

[0046] Optionally, based on the above embodiment, see Figure 2 The tube shell 130 is also provided with a sixth port 106 , which is electrically connected to the output end of the peak amplifier 121 , and is used to output a radio frequency signal to the peak amplifier 121 ; the sixth port 106 is used to connect to a third DC power supply.

[0047] Specifically, the sixth port 106 can be a pin interface on the tube shell 130. The sixth port 106 is electrically connected to the output end of the second output matching circuit 123 to transmit the RF signal amplified by the peak amplifier 121 to the subsequent connected load. At the same time, the sixth port 106 can also be connected to the third DC power supply to power the drains of the multiple peak amplifiers 121.

[0048] Optionally, the power amplifier integrated circuit also includes a first output combining module 150, which is packaged in the tube shell 130; the input end of the first output combining module 150 is electrically connected to the output end of the second output matching circuit 123, and the output end of the first output combining module 150 is electrically connected to the sixth port 106.

[0049] Specifically, the first output combining module 150 is encapsulated inside the tube shell 130, and the signal processed by the multiple peak amplifiers 121 is transmitted to the input end of the first output combining module 150 through the second output matching circuit 123. The first output combining module 150 transmits the combined processed signal to the subsequent load through the sixth port 106. The first output combining module 150 can combine the multiple signals processed by the peak amplifier 121 into a single output signal. The signals processed by the multiple peak amplifiers 121 need to be recombined for subsequent use or transmission. The first output combining module 150 ensures that these signals are synchronized when combined to avoid mutual interference, so that the final output signal has higher stability and reliability.

[0050] Figure 4 A schematic diagram of a power amplifier device provided by an embodiment of the utility model, referring to Figure 4 The power amplifier device includes the power amplifier integrated circuit provided by any embodiment of the utility model, a second input branch 410 and / or a second output combiner 420; the output end of the second input branch 410 is electrically connected to the third port 103 and the fifth port 105, and the input end of the second input branch 410 is used to connect an external RF signal; the input end of the second output combiner 420 is electrically connected to the fourth port 104 and the sixth port 106, and the output end of the second output combiner 410 is used to output the RF signal processed by the carrier power amplifier module and the peak power amplifier module.

[0051] Specifically, the output end of the second input branch 410 is electrically connected to the third port 103 and the fifth port 105, and the second input branch 410 can divide the RF signal of the external RF signal source into two paths. One of the RF signals is transmitted to the carrier amplifier 111 through the third port 103 for signal amplification processing; the other is transmitted to multiple peak amplifiers 121 through the fifth port 105 for signal amplification processing. The input end of the second output combiner 420 is electrically connected to the fourth port 104 and the sixth port 106. The RF signal processed by the carrier amplifier 111 is transmitted to the second output combiner 420 through the fourth port 104, and the RF signal amplified by multiple peak amplifiers 121 is transmitted to the second output combiner 420 through the sixth port 106. The second output combiner 420 can recombine the signals amplified by the carrier amplifier 111 and the multiple peak amplifiers 121 and transmit them to the subsequent circuit load for use.

[0052] The power amplifier device provided in the embodiment of the utility model can execute the power amplifier integrated circuit provided in any embodiment of the utility model, and has the corresponding functional modules and beneficial effects of executing the power amplifier integrated circuit.

[0053] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A power amplifier integrated circuit, characterized in that: It includes a carrier power amplifier module, at least two peak power amplifier modules and a tube shell; the carrier power amplifier module and the peak power amplifier module are packaged in the tube shell; The tube shell is provided with a first port; the peak power amplifier module includes a peak amplifier, and the gate of the peak amplifier in each of the peak power amplifier modules is electrically connected to the first port, and the first port is used to connect a first DC power supply.

2. The power amplifier integrated circuit according to claim 1, characterized in that: The carrier power amplifier module includes a carrier amplifier, a first input matching circuit and a first output matching circuit; The input end of the carrier amplifier is electrically connected to the output end of the first input matching circuit, and the output end of the carrier amplifier is electrically connected to the input end of the first output matching circuit; The tube shell is also provided with a second port, the second port is electrically connected to the gate of the carrier amplifier, and the second port is used to connect to a second DC power supply.

3. The power amplifier integrated circuit according to claim 2, characterized in that: The tube shell is also provided with a third port, the third port is electrically connected to the input end of the first input matching circuit, and the third port is used to input a radio frequency signal to the carrier amplifier.

4. The power amplifier integrated circuit according to claim 2, characterized in that: The tube shell is also provided with a fourth port, which is electrically connected to the output end of the first output matching circuit, and is used to output a radio frequency signal to the carrier amplifier. The fourth port is also used to connect a third DC power supply.

5. The power amplifier integrated circuit according to claim 1, characterized in that: The peak power amplifier module also includes a second input matching circuit and a second output matching circuit; The input end of the peak amplifier is electrically connected to the output end of the second input matching circuit, and the output end of the peak amplifier is electrically connected to the input end of the second output matching circuit; The tube shell is also provided with a fifth port, the fifth port is electrically connected to the input end of the peak amplifier, and the fifth port is used to input a radio frequency signal to the peak amplifier.

6. The power amplifier integrated circuit according to claim 5, characterized in that: The power amplifier integrated circuit further comprises a first input shunt module, wherein the first input shunt is packaged in the tube shell; An input end of the first input branch module is electrically connected to the fifth port, and an output end of the first input branch module is electrically connected to an input end of the second input matching circuit.

7. The power amplifier integrated circuit according to claim 5, characterized in that: The tube shell is also provided with a sixth port, which is electrically connected to the output end of the peak amplifier and is used to output a radio frequency signal to the peak amplifier; the sixth port is used to connect to a third DC power supply.

8. The power amplifier integrated circuit according to claim 7, characterized in that: The power amplifier integrated circuit further includes a first output combining module, and the first output combining module is packaged in the tube shell; An input end of the first output combining module is electrically connected to an output end of the second output matching circuit, and an output end of the first output combining module is electrically connected to the sixth port.

9. A power amplifier device, characterized in that: A power amplifier integrated circuit comprising the power amplifier integrated circuit according to any one of claims 1 to 8.

10. The power amplifier device according to claim 9, characterized in that: It also includes a second input branch and / or a second output combination, The second input branch output end is electrically connected to the third port and the fifth port, and the second input branch input end is used to connect to an external radio frequency signal; The second output combining input end is electrically connected to the fourth port and the sixth port, and the second output combining output end is used to output the radio frequency signal processed by the carrier power amplifier module and the peak power amplifier module.

Images