Power amplifier circuit assembly, communication device, and power supply voltage control method

Abstract

The present application discloses a power amplifier circuit assembly, a communication device, and a power supply voltage control method. The power amplifier circuit assembly comprises: a power supply; a first power amplifier, a power supply end of the first power amplifier being electrically connected to the power supply; a first power supply isolation apparatus, electrically connected to a first connection point, the first connection point being a connection point where the power supply end of the first power amplifier is electrically connected to the power supply; and a second power amplifier, a power supply end of the second power amplifier being electrically connected to the power supply by means of the first power supply isolation apparatus.

Description

Power amplifier circuit assembly, communication equipment and power supply voltage control method

[0001] Cross-references

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on December 15, 2023, with application number 202311745470.6 and invention name “Power amplifier circuit component, communication equipment and power supply voltage control method”. The entire contents of the application are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a power amplifier circuit component, communication equipment and a power supply voltage control method. Background Art

[0004] As people's requirements for Internet access speeds gradually increase, many uplink technologies have emerged to improve speeds, such as uplink carrier aggregation (ULCA), uplink multiple input-multiple output (UL MIMO), supplemental uplink (SUL), and evolved NodeB dual connectivity (ENDC).

[0005] During the implementation of the present application, the inventors discovered that the prior art has at least the following problems: Uplink technologies such as ULCA require multiple uplink transmission paths to operate simultaneously. The currently adopted solution is to use a separate power supply to power the power amplifiers of each simultaneously operating path. For example, uplink two-path inter-band CA requires two uplink transmission paths to operate simultaneously, i.e., two power amplifiers to operate simultaneously, requiring two power supplies. This solution not only increases costs and printed circuit board (PCB) area, but also, when only one path is operating, one power supply path is unused, resulting in low power utilization. Summary of the Invention

[0006] The present application aims to provide a power amplifier circuit component, a communication device and a power supply voltage control method, which at least solve one of the problems of saving costs and ensuring the performance of the power amplifier.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] In the first aspect, an embodiment of the present application proposes a power amplifier circuit component, which includes: a power supply 1; a first power amplifier 21, the power supply terminal 211 of the first power amplifier 21 is electrically connected to the power supply 1; a first power supply isolation device 310, the first end 3101 of the first power supply isolation device 310 is electrically connected to the first connection point, the second end 3102 of the first power supply isolation device 310 is electrically connected to the power supply terminal 221 of the second power amplifier 22, and the first connection point 41 is the connection point where the power supply terminal 211 of the first power amplifier 21 is electrically connected to the power supply 1; a second power amplifier 22, the power supply terminal 221 of the second power amplifier 22 is electrically connected to the power supply 1 through the first power supply isolation device 310.

[0009] In a second aspect, an embodiment of the present application proposes a communication device, comprising a plurality of uplink transmission links, wherein the plurality of uplink transmission links comprise the power amplification circuit component described above.

[0010] In a third aspect, an embodiment of the present application proposes a power supply voltage control method, which includes: when multiple power amplifiers of the communication device are operating simultaneously, obtaining a target operating voltage corresponding to each of the power amplifiers based on the operating power of the multiple power amplifiers, wherein the multiple power amplifiers are powered by the same power supply; and controlling the output voltage of the power supply according to the maximum value of the target operating voltages of the multiple power amplifiers.

[0011] In a fourth aspect, an embodiment of the present application proposes another power supply voltage control method, including: when multiple power amplifiers of the communication device are operating simultaneously, obtaining the target operating power of the multiple power amplifiers, wherein the multiple power amplifiers are powered by the same power supply; based on the pre-calibrated correspondence between the operating power and the supply voltage value of each power amplifier, obtaining the target supply voltage value corresponding to the target operating power of the multiple power amplifiers; and controlling the output voltage of the power supply to be the target supply voltage value.

[0012] In an embodiment of the present application, the power amplifier circuit assembly uses a single power supply to power multiple power amplifiers, reducing the use of power supply chips and corresponding devices, saving PCB area, and reducing costs. At the same time, by using power isolation devices to isolate the interference of radio frequency signals emitted by each power amplifier, crosstalk is prevented when multiple power amplifiers work at the same time, thereby ensuring the performance of the power amplifiers.

[0013] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0015] FIG1 is a schematic diagram of a power amplifier circuit assembly provided in an embodiment of the present application;

[0016] FIG2 is a schematic diagram of two power amplifiers operating simultaneously and crosstalking with each other according to an embodiment of the present application;

[0017] FIG3 is another schematic diagram of a power amplifier circuit assembly provided in an embodiment of the present application;

[0018] FIG4 is another schematic diagram of a power amplifier circuit assembly provided in an embodiment of the present application;

[0019] FIG5 is another schematic diagram of a power amplifier circuit assembly provided in an embodiment of the present application;

[0020] FIG6 is a flow chart of a method for controlling a power supply voltage according to an embodiment of the present application;

[0021] FIG7 is a flow chart of a single power supply selection method provided in an embodiment of the present application;

[0022] FIG8 is a schematic diagram showing ripple changes caused by simultaneous operation of two power amplifiers according to an embodiment of the present application;

[0023] FIG9 is a flow chart of another power supply voltage control method provided in an embodiment of the present application;

[0024] FIG10 is a flowchart of calling static parameters of a single power supply and two power supplies provided in an embodiment of the present application.

[0025] Figure numerals: 1: power supply; 21: first power amplifier; 211: power supply terminal of the first power amplifier; 22: second power amplifier; 221: power supply terminal of the second power amplifier; 23: third power amplifier; 231: power supply terminal of the third power amplifier; 310: first power supply isolation device; 3101: first terminal of the first power supply isolation device; 3102: second terminal of the first power supply isolation device; 320: second power supply isolation device; 3201: first terminal of the second power supply isolation device; 3202: second terminal of the second power supply isolation device; 301: first power supply filter circuit; 302: second power supply filter circuit; 32: first capacitor; 321: first terminal of the first capacitor; 322: second terminal of the first capacitor; 34: second capacitor; 341: first terminal of the second capacitor; 342: second terminal of the second capacitor; 33: ferrite bead; 41: first connection point; 42: second connection point; 43: third connection point. DETAILED DESCRIPTION

[0026] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of this application.

[0027] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. Furthermore, the term "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] The power amplifier circuit assembly, communication equipment, and power supply voltage control method according to the present invention will be described below with reference to FIG. 1 to FIG. 10 .

[0031] As shown in FIG1 , a power amplifier circuit assembly according to some embodiments of the present application includes: a power supply 1 , a first power amplifier 21 , a second power amplifier 22 and a first power isolation device 310 .

[0032] In the embodiment of the present application, the power supply 1 is electrically connected to the power supply terminal 211 of the first power amplifier 21 and the power supply terminal 221 of the second power amplifier 22. A first power isolation device 310 is provided, wherein a first end 3101 of the first power isolation device 310 is electrically connected to the first connection point, and a second end 3102 of the first power isolation device 310 is electrically connected to the power supply terminal 221 of the second power amplifier 22. The first connection point 41 is the connection point where the power supply terminal 211 of the first power amplifier 21 is electrically connected to the power supply 1. The power supply terminal 221 of the second power amplifier 22 is electrically connected to the power supply 1 through the first power isolation device 310.

[0033] It should be noted that FIG1 shows two power amplifiers, a first power amplifier 21 and a second power amplifier 22 , and a first power isolation device 310 . If the number of power amplifiers is greater than two, multiple power isolation devices may be connected.

[0034] In the power amplifier circuit assembly provided by the embodiments of the present application, a single power supply is electrically connected to the power supply terminals of multiple power amplifiers. This allows the use of a single power supply to power multiple power amplifiers, eliminating the need to power each power amplifier separately. This reduces the use of power supply chips and saves costs. Furthermore, the power supply provided by the embodiments of the present application can enhance the current carrying capacity of existing power supplies to ensure the normal operation of multiple power amplifiers.

[0035] In the embodiment of the present application, if no isolation measures are taken, the radio frequency signals leaked when the first power amplifier 21 and the second power amplifier 22 work at the same time will interfere with each other, affecting the effect of the power amplifier. As shown in Figure 2, although the power amplifier (PA) has an RF choke (RF choke) for isolating the radio frequency signal when it is working, there will still be some radio frequency signal leakage, such as the main frequency f0 and its harmonics 2f0, 3f0, etc. If these signals are not processed in time, they can be crosstalked to another power amplifier through the connected power supply. The two signals can intermodulate with each other and cause stray signals at the final output. Assuming that the operating frequencies of the two power amplifiers are f1 and f2 respectively, f1+f2 and f1-f2 or other higher-order intermodulation signals may be intermodulated. Therefore, the power amplifier circuit component provided in the embodiment of the present application includes a first power isolation device 310, and the first power isolation component 310 is connected between the first power amplifier 21 and the second power amplifier 22, so that it can be used to isolate the interference between the radio frequency signal of the first power amplifier 21 and the radio frequency signal of the second power amplifier 22. It is ensured that there are no stray signals at the output end of the power amplifier circuit component to ensure the performance of the power amplifier.

[0036] In an optional implementation, as shown in FIG3 , the first power isolation device 310 may include: a first power filter circuit 301 electrically connected to the power supply 1 and the power supply terminal 211 of the first power amplifier 21; and a second power filter circuit 302 electrically connected to the power supply 1 and the power supply terminal 221 of the second power amplifier 22. The first power filter circuit 301 and the second power filter circuit 302 are configured to filter out radio frequency signals leaked from the first power amplifier 21 and the second power amplifier 22. In this embodiment of the present application, one power filter circuit is connected to one power amplifier, with the two corresponding to each other.

[0037] In the above optional implementation, a power supply filter circuit can further be used to filter out RF signals leaked from the power amplifier connected thereto. The first power supply filter circuit 301 can filter out RF signals leaked from the first power amplifier 21. Similarly, the second power supply filter circuit 302 can filter out RF signals leaked from the second power amplifier 22. Optionally, a power supply filter circuit is also used to filter out RF signals leaked from other power amplifiers. The first power supply filter circuit 301 provided in the embodiment of the present application can filter out RF signals leaked from the second power amplifier 22. Similarly, the second power supply filter circuit 302 can filter out RF signals leaked from the first power amplifier 21.

[0038] In the above optional implementation, multiple power supply filter circuits can optionally be combined to simultaneously filter out RF signals leaked from multiple power amplifiers. In this optional implementation, multiple power supply filter circuits can be combined to filter out RF signals leaked from all power amplifiers in the circuit assembly. The first power supply filter circuit 301 and the second power supply filter circuit 302 can be combined to simultaneously filter out RF signals leaked from the first power amplifier 21 and the second power amplifier 22.

[0039] In an optional implementation, as shown in Figure 4, the first power supply filter circuit 301 may include: a plurality of first capacitors 32 connected in parallel, the first end 321 of the first capacitor 32 is electrically connected to the first connection point 41, and the second end 322 is grounded; the second power supply filter circuit 302 includes: a plurality of second capacitors 34 connected in parallel, the first end 341 of the second capacitor 34 is electrically connected to the power supply end 221 of the second power amplifier 22 and the power supply 1, and the second end 342 is grounded.

[0040] Although FIG4 shows an example of a power supply filter circuit including two capacitors, it is not limited thereto. In practical applications, the number of capacitors included in a power supply filter circuit can be determined based on the actual application situation, and is not specifically limited in the embodiments of the present application.

[0041] In an optional implementation, as shown in FIG4 , the first power isolation device 310 further includes: at least one magnetic bead 33, one end of the at least one magnetic bead 33 being electrically connected to the first connection point 41, and the other end being electrically connected to the second connection point 42, wherein the second connection point 42 is the connection point between the plurality of second capacitors 34 and the power supply terminal 221 of the second power amplifier 22. It should be noted that FIG4 only illustrates one combination of capacitors and magnetic beads included in a power filter circuit, wherein the plurality of capacitors are connected in parallel in the circuit, the first end of the capacitor is connected to the connection point where the power supply terminal of the power amplifier is electrically connected to the power supply, and the second end is grounded. However, in actual applications, the capacitors and magnetic beads may also be combined in other ways, which are not specifically limited in the embodiments of the present application.

[0042] In an optional implementation, as shown in Figure 5, the power amplifier circuit component provided in the embodiment of the present application also includes: a second power supply isolation device 320, the first end 3201 of the second power supply isolation device 320 is electrically connected to the third connection point 43, the second end 3202 of the second power supply isolation device 320 is electrically connected to the power supply terminal 231 of the third power amplifier 23, and the third connection point 43 is the connection point between the first power supply isolation device 310 and the power supply terminal 221 of the second power amplifier 22; a third power amplifier 23, the power supply terminal 231 of the third power amplifier 23 is electrically connected to the power supply 1 through the second power supply isolation device 320 and the first power supply isolation device 310; the second power supply isolation device 320 is used to isolate the interference between the RF signal of the first power amplifier 21, the RF signal of the second power amplifier 22, and the RF signal of the third power amplifier 23. In this optional implementation, the power amplifier circuit assembly may include one power supply, three power amplifiers, and two power isolation devices. The power supply terminal of the third power amplifier 23 is electrically connected to the power supply 1 via the second power isolation device 320 and the first power isolation device 310. The second power isolation device 320 is used to isolate interference between the radio frequency signals of the first power amplifier 21, the radio frequency signals of the second power amplifier 22, and the radio frequency signals of the third power amplifier 23. Although FIG5 illustrates the power amplifier circuit assembly as including three power amplifiers and two power isolation devices, this is not limiting. In actual applications, the number of power amplifiers and power isolation devices included in a power amplifier circuit assembly can be determined based on actual application conditions and is not specifically limited in the embodiments of the present application.

[0043] According to the power amplifier circuit assembly of the embodiment of the present application, a single power supply is used to power multiple power amplifiers, and a power isolation device is used to isolate the radio frequency signals leaked when the power amplifiers are working, thereby reducing costs, reducing the area of ​​the PCB and the use of corresponding devices, preventing signal crosstalk when multiple power amplifiers are working simultaneously, solving the problem of low power utilization in the prior art, and achieving the advantages of fully utilizing power resources and ensuring excellent performance of the power amplifiers.

[0044] The embodiment of the present application provides a communication device including multiple uplink transmission links, wherein the multiple uplink transmission links include the power amplifier circuit assembly described above. The communication device may be a terminal device, such as a mobile phone.

[0045] The present application also provides a method for controlling a power supply voltage. As shown in FIG6 , the present application provides a method for controlling a power supply voltage, which mainly includes the following steps:

[0046] S601: When multiple power amplifiers of the communication device operate simultaneously, obtain a target operating voltage corresponding to each power amplifier based on the operating power of the multiple power amplifiers.

[0047] Wherein, the multiple power amplifiers are powered by the same power supply.

[0048] Specifically, when multiple power amplifiers of a communication device operate simultaneously, that is, a single power supply supplies power to multiple power amplifiers simultaneously, the target operating voltage corresponding to each power amplifier can be first obtained according to the operating power of each power amplifier.

[0049] S602: Control the output voltage of the power supply according to a maximum value of the target operating voltages of the power amplifiers.

[0050] In an embodiment of the present application, the output voltage of the power supply can be controlled based on the maximum value of the target operating voltages of the power amplifiers, thereby dynamically controlling the output voltage. In an optional implementation, the target operating voltage of the power amplifier with the highest target operating voltage can be selected as the output voltage of the power supply.

[0051] For example, in the flowchart shown in Figure 7, dual-channel transmission can be performed based on the voltage values ​​mapped to the power levels of the two PAs. When a single power amplifier is operating, the corresponding power is associated with a voltage. The power detection circuit can obtain the power of each PA's channel in real time, thereby indirectly determining the operating voltage of each PA. In the case of multi-transmit ULCA, as shown in Figure 7, assuming that the target operating voltage for power amplifier PA1 is Va and the target operating voltage for power amplifier PA2 is Vb, Va and Vb are compared, and the larger target operating voltage is used as the power supply output voltage.

[0052] In practical applications, the current of two PAs operating simultaneously can be significantly higher than that of a single PA. Furthermore, the introduction of power isolation components also increases internal resistance. Referring to Figure 8, each section of the power supply circuit has internal resistance, and the power isolation components also have resistance. For a single PA operating, assuming that PA1 operates at voltage Va and current Ia, and PA2 operates at voltage Vb and current Ib, with Va > Vb, the simplest approach is to take the operating voltage of the PA with the highest voltage as the output voltage, selecting output voltage Va. The resulting PA voltage is: Va - Ia * (R1 + R2). When both PAs operate simultaneously, the current is (Ia + Ib), resulting in a final PA voltage of: Va - Ia * (R1 + R2) - Ib * R1. This results in greater ripple compared to single PA operation, and jitter caused by power supply instability may result in Va no longer meeting the PA's performance requirements. Therefore, an alternative implementation approach can improve the performance of each PA by increasing the voltage.

[0053] Optionally, in one implementation, controlling the output voltage of the power supply based on the maximum value among the target operating voltages of the multiple power amplifiers includes controlling the output voltage of the power supply to a target value, where the target value is the sum of the maximum value among the target operating voltages of the multiple power amplifiers and a preset offset value. For example, to ensure normal operation of the power amplifier, voltage compensation can be performed by adding an offset value to the original target operating voltage to meet the target operating voltage of the power amplifier. The preset offset value can be calculated based on the internal resistance of the wire and the internal resistance of the power isolation device, that is, the final output voltage is Va + offset or Vb + offset, thereby ensuring the stability of the power supply and the performance of the power amplifier.

[0054] FIG9 shows a flow chart of another power supply voltage control method provided by an embodiment of the present application. As shown in FIG9 , another power supply voltage control method provided by an embodiment of the present application may include the following steps:

[0055] S901: When multiple power amplifiers of the communication device operate simultaneously, obtain target operating powers of the multiple power amplifiers.

[0056] Wherein, the multiple power amplifiers are powered by the same power supply.

[0057] The power supply voltage control method provided in the embodiment of the present application is applied to a communication device including multiple uplink transmission links, and the multiple uplink transmission links include the above-mentioned power amplifier circuit components. When a single power supply simultaneously powers multiple power amplifiers, the target operating power of the multiple power amplifiers can be obtained.

[0058] S902: Based on a pre-calibrated correspondence between the operating power and the supply voltage value of each power amplifier, obtain target supply voltage values ​​corresponding to the target operating powers of the plurality of power amplifiers.

[0059] In a specific implementation, before obtaining the target supply voltage value corresponding to the target operating power of the multiple power amplifiers, the method also includes: calibrating the supply voltages of the multiple power amplifiers in different operating power combinations to obtain the correspondence between the different operating power combinations of the multiple power amplifiers and the supply voltage values.

[0060] In an embodiment of the present application, the supply voltages of multiple power amplifiers in different operating power combinations can be calibrated and tested in advance to determine the correspondence between the operating voltages and supply voltages of the power amplifiers, so as to facilitate query in actual applications.

[0061] Specifically, the different working power combinations include: a combination of a first working power greater than a first value and a second working power greater than the first value; a combination of a first working power greater than the first value and a second working power greater than the second value and less than or equal to the first value, the second value being less than the first value; a combination of a first working power greater than the first value and a second working power greater than a third value and less than or equal to the second value, the third value being less than the second value; a combination of a first working power greater than the second value and less than or equal to the first value and a second working power greater than the first value; a combination of a first working power greater than the second value and less than or equal to the first value and a second working power greater than the second value and less than or equal to the first value; a combination of a first working power greater than the second value and less than or equal to the first value and a second working power greater than the third value and less than or equal to the second value; a combination of a first working power greater than the third value and less than or equal to the second value and a second working power greater than the first value; a combination of a first working power greater than the third value and less than or equal to the second value and a second working power greater than the first value; a combination of a first working power greater than the third value and less than or equal to the second value and a second working power greater than the second value and less than or equal to the first value.

[0062] In one optional implementation, the parameters determined through calibration testing are the voltages required for simultaneous operation of two power amplifiers (PA1 and PA2). Compared to single-channel calibration, the number of parameters increases from two (PA1 and PA2) to three (PA1, PA2, and PA1+PA2). Calibration is performed on both PAs during operation, covering high, medium, and low power combinations of the two PAs. A voltage parameter table for each combination is generated, and each power point is covered through parameter fitting. Subsequent applications can directly access the parameter table, as shown in Table 1. Since the second value is less than the first value and the third value is less than the second value, the operating power greater than the first value in the aforementioned operating power combination can be referred to as the high power in Representative 1, the operating power greater than the second value but less than or equal to the first value can be referred to as the medium power in Representative 1, and the operating power greater than the third value but less than or equal to the second value can be referred to as the low power in Representative 1. The specific values ​​of the first, second, and third values ​​can be determined based on actual conditions, such as the type of power amplifier or its intended use.

[0063] Table 1 2-way PA operating voltage parameter combination table

[0064] The specific voltage output can be referred to in Figure 10. When multiple PAs are working, the power of the channels where different PAs are located is obtained through power detection. If the power of PA1 is high power, the power of PA2 is also high power. According to Table 1, voltage VCC1 is selected as the output voltage. If the power of PA1 is low power and the power of PA2 is high power, voltage VCC7 is selected as the output voltage of the power supply.

[0065] In one implementation, the power supply voltages of multiple PAs at different operating powers can be fitted based on multiple sets of calibrated parameters to obtain power supply voltage value curves of multiple PAs at different operating powers. During specific operation, the power supply voltage value corresponding to the operating power of each PA in actual conditions can be determined based on the fitted curve, thereby controlling the output voltage of the power supply.

[0066] S903: Control the output voltage of the power supply to be the target supply voltage value.

[0067] Specifically, the target supply voltage values ​​corresponding to the target operating powers of the power amplifiers are obtained in advance and used as the output voltage values ​​of the power supply. The power supply can supply power to the power amplifiers in the circuit according to the target supply voltage values ​​as the output voltage values.

[0068] The power supply voltage control method provided in the embodiment of the present application obtains the corresponding target operating voltage through the operating power of the power amplifier, and then controls the output voltage of the power supply according to the target operating voltage to achieve dynamic voltage control, which can ensure the normal operation of the power amplifier, avoid power waste by enhancing the current carrying capacity of the power supply, and save costs.

[0069] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0070] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A power amplifier circuit assembly, comprising: a power supply (1); A first power amplifier (21), wherein a power supply terminal (211) of the first power amplifier (21) is electrically connected to the power supply (1); A first power isolation device (310), wherein a first end (3101) of the first power isolation device (310) is electrically connected to a first connection point (41), a second end (3102) of the first power isolation device (310) is electrically connected to a power supply end (221) of a second power amplifier (22), and the first connection point (41) is a connection point at which a power supply end (211) of the first power amplifier (21) is electrically connected to the power supply (1); The second power amplifier (22), the power supply end (221) of the second power amplifier (22) is electrically connected to the power supply (1) via the first power supply isolation device (310).

2. The assembly according to claim 1, wherein The first power isolation device (310) comprises: A first power supply filter circuit (301) electrically connected to the power supply (1) and a power supply terminal (211) of the first power amplifier (21); A second power supply filter circuit (302) is electrically connected to the power supply (1) and a power supply terminal (221) of a second power amplifier (22); The first power supply filter circuit (301) and the second power supply filter circuit (302) are used to filter out radio frequency signals leaked from the first power amplifier (21) and the second power amplifier (22).

3. The assembly according to claim 2, wherein: The first power supply filter circuit (301) comprises: a plurality of first capacitors (32) connected in parallel, wherein a first end (321) of the first capacitor (32) is electrically connected to the first connection point (41), and a second end (322) is grounded; The second power supply filter circuit (302) comprises: a plurality of second capacitors (34) connected in parallel, wherein a first end (341) of the second capacitor (34) is electrically connected to a power supply end (221) of the second power amplifier (22), and a second end (342) is grounded.

4. The assembly according to claim 3, wherein: The first power isolation device (310) further includes: At least one magnetic bead (33), one end of the at least one magnetic bead (33) is electrically connected to the first connection point (41), and the other end is electrically connected to a second connection point (42), and the second connection point (42) is a connection point between a plurality of the second capacitors (34) and a power supply terminal (221) of the second power amplifier (22).

5. The assembly according to any one of claims 1 to 4, wherein: Also includes: a second power isolation device (320), wherein a first end (3201) of the second power isolation device (320) is electrically connected to a third connection point (43), a second end (3202) of the second power isolation device (320) is electrically connected to a power supply terminal (231) of a third power amplifier (23), and the third connection point (43) is a connection point between the first power isolation device (310) and the power supply terminal (221) of the second power amplifier (22); The third power amplifier (23), the power supply terminal (231) of the third power amplifier (23) being electrically connected to the power supply (1) via the second power supply isolation device (320) and the first power supply isolation device (310); The second power supply isolation device (320) is used to isolate interference between the radio frequency signal of the first power amplifier (21), the radio frequency signal of the second power amplifier (22), and the radio frequency signal of the third power amplifier (23).

6. A communication device, comprising a plurality of uplink transmission links, wherein the plurality of uplink transmission links comprises the power amplification circuit component according to any one of claims 1 to 5.

7. A power supply voltage control method, applied to the communication device according to claim 6, the method comprising: When multiple power amplifiers of the communication device are working simultaneously, obtaining a target operating voltage corresponding to each of the power amplifiers based on the operating power of the multiple power amplifiers, wherein the multiple power amplifiers are powered by the same power supply; The output voltage of the power supply is controlled according to a maximum value among a plurality of target operating voltages of the power amplifiers.

8. The method according to claim 7, wherein: The step of controlling the output voltage of the power supply according to the maximum value of the target operating voltages of the power amplifiers comprises: The output voltage of the power supply is controlled to be a target value, wherein the target value is the sum of a maximum value of target operating voltages of a plurality of the power amplifiers and a preset offset value.

9. A power supply voltage control method, applied to the communication device according to claim 6, the method comprising: When multiple power amplifiers of the communication device are operating simultaneously, obtaining target operating powers of the multiple power amplifiers, wherein the multiple power amplifiers are powered by the same power supply; Based on the pre-calibrated correspondence between the operating power and the supply voltage value of each power amplifier, obtaining a target supply voltage value corresponding to the target operating power of the plurality of power amplifiers; The output voltage of the power supply is controlled to be the target supply voltage value.

10. The method according to claim 9, wherein: Before acquiring the target supply voltage values ​​corresponding to the target operating powers of the plurality of power amplifiers, the method further includes: By calibrating the supply voltages of the multiple power amplifiers at different working power combinations, the corresponding relationship between the different working power combinations of the multiple power amplifiers and the supply voltage values ​​is obtained.

11. The method according to claim 10, wherein: The different working power combinations include: A combination of a first operating power greater than a first value and a second operating power greater than the first value; A combination of a first operating power greater than the first value and a second operating power greater than a second value and less than or equal to the first value, the second value being less than the first value; A combination of a first operating power greater than the first value and a second operating power greater than a third value and less than or equal to the second value, wherein the third value is less than the second value; A combination of a first operating power greater than the second value and less than or equal to the first value and a second operating power greater than the first value; A combination of a first operating power greater than the second value and less than or equal to the first value and a second operating power greater than the second value and less than or equal to the first value; A combination of a first operating power greater than the second value and less than or equal to the first value and a second operating power greater than a third value and less than or equal to the second value; A combination of a first operating power greater than the third value and less than or equal to the second value and a second operating power greater than the first value; A combination of a first operating power greater than the third value and less than or equal to the second value and a second operating power greater than the second value and less than or equal to the first value; A combination of a first operating power greater than the third value and less than or equal to the second value and a second operating power greater than the third value and less than or equal to the second value.

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