Radio frequency power supply and equipment

Abstract

The embodiment of the invention provides a radio frequency power supply and equipment, and the equipment is characterized in that a first output end of a switching power supply circuit is coupled with a first output end of the radio frequency power supply, and outputs a first target voltage signal; the output end of the first high-frequency voltage generation circuit is coupled with the first output end of the radio frequency power supply, and outputs a second target voltage signal; the first output end of the radio frequency power supply is used for supplying power to the first PA and outputting a first voltage signal obtained by superposition to the first PA; the second output end of the switching power supply circuit is coupled with the second output end of the radio frequency power supply, and outputs a third target voltage signal; the voltage output end of the second high-frequency voltage generation circuit is coupled with the second output end of the radio-frequency power supply and outputs a fourth target voltage signal; and the second output end of the radio frequency power supply is used for supplying power to the second PA and outputting a second voltage signal obtained by superposition to the second PA. According to the embodiment of the invention, power can be supplied to multiple PAs at the same time, and the requirements of the multiple PAs for a power supply system are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of radio frequency power supply, and particularly relates to a radio frequency power supply and equipment. BACKGROUND

[0002] As an important component of mobile and wireless communication systems, the design of radio frequency front-end (RFFE) systems becomes more and more complex, and radio frequency transmitters need to support multiple characteristics, such as multi-band, multi-system, multi-duplex, multi-antenna, etc. In order to support the above characteristics, the radio frequency transmitter system needs to use multiple radio frequency power amplifiers (RFPA), and the specifications of the transmission frequency band, bandwidth, noise, etc. of the radio frequency transmitter system to which each RFPA belongs are different, resulting in different requirements of various RFPA on their own power supply system. SUMMARY

[0003] Embodiments of the present application provide a radio frequency power supply and equipment, which can simultaneously supply power to multiple PAs and meet the requirements of multiple PAs on the power supply system.

[0004] In a first aspect, the embodiments of the present application provide a radio frequency power supply, comprising: a switching power supply circuit, a first high-frequency voltage generation circuit, and a second high-frequency voltage generation circuit; wherein a first output end of the switching power supply circuit is coupled with a first output end of the radio frequency power supply, and outputs a first target voltage signal to the first output end of the radio frequency power supply; an output end of the first high-frequency voltage generation circuit is coupled with the first output end of the radio frequency power supply, and outputs a second target voltage signal to the first output end of the radio frequency power supply; the first output end of the radio frequency power supply is used to supply power to a first PA, and outputs a first voltage signal obtained by superimposing the first target voltage signal and the second target voltage signal to the first PA; the first target voltage signal and the second target voltage signal are determined according to a first envelope signal corresponding to the first PA; a second output end of the switching power supply circuit is coupled with a second output end of the radio frequency power supply, and outputs a third target voltage signal to the second output end of the radio frequency power supply; a voltage output end of the second high-frequency voltage generation circuit is coupled with the second output end of the radio frequency power supply, and outputs a fourth target voltage signal to the second output end of the radio frequency power supply; the second output end of the radio frequency power supply is used to supply power to a second PA, and outputs a second voltage signal obtained by superimposing the third target voltage signal and the fourth target voltage signal to the second PA; the third target voltage signal and the fourth target voltage signal are determined according to a second envelope signal corresponding to the second PA. The radio frequency power supply provided by the embodiments of the present application adopts a new implementation architecture of the radio frequency power supply, and multiple high-frequency voltage generation circuits can be included in the same radio frequency power supply, so that different PAs can be combined, so that multiple PAs can be simultaneously supplied with power, and the power supply requirements of multiple PAs on the radio frequency power supply can be met.

[0005] In some possible implementation manners, the apparatus further includes a controller; the controller is coupled to the switching power supply circuit and the first high-frequency voltage generation circuit respectively, and is configured to control the switching power supply circuit to output the first target voltage signal according to a low-frequency signal of the first envelope signal, and control the first high-frequency voltage generation circuit to output the second target voltage signal according to the first envelope signal or a high-frequency signal of the first envelope signal;

[0006] And / or, the controller is coupled to the second high-frequency voltage generation circuit, and is configured to control the switching power supply circuit to output the third target voltage signal according to a low-frequency signal of the second envelope signal, and control the second high-frequency voltage generation circuit to output the fourth target voltage signal according to the second envelope signal or a high-frequency signal of the second envelope signal.

[0007] In some possible implementation manners, the first high-frequency voltage generation circuit is an LA circuit or a bias voltage generation circuit.

[0008] In some possible implementation manners, the bias voltage generation circuit is specifically a multi-voltage selection circuit or a high-frequency switching power supply circuit.

[0009] In some possible implementation manners, the first high-frequency voltage generation circuit is an LA circuit, and the first output end of the switching power supply circuit is coupled to a first output end of a radio frequency power supply, and the apparatus includes:

[0010] The first output end of the switching power supply circuit is coupled to the first output end of the radio frequency power supply through a first inductor; or,

[0011] The first output end of the switching power supply circuit is coupled to the first output end of the radio frequency power supply through a second inductor and a third inductor connected in series, and a coupling end of the second inductor and the third inductor is coupled to ground through a first capacitor.

[0012] In some possible implementation manners, the first high-frequency voltage generation circuit includes:

[0013] The output end of the linear amplifier is coupled to the output end of the first high-frequency voltage generation circuit through a second capacitor; the input end of the linear amplifier serves as the input end of the first high-frequency voltage generation circuit, and is configured to be coupled to the controller.

[0014] In some possible implementation manners, the first high-frequency voltage generation circuit further includes:

[0015] The output end of the first high-frequency voltage generation circuit is coupled to the input end of the linear amplifier; or,

[0016] The output end of the linear amplifier is coupled to the input end of the linear amplifier.

[0017] In some possible implementation manners, the first high-frequency voltage generation circuit is a high-frequency switching power supply circuit;

[0018] The first output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply, comprising:

[0019] The high level output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply.

[0020] The output end of the first high frequency voltage generating circuit is coupled with the first output end of the radio frequency power supply, comprising:

[0021] The high level output end of the first high frequency voltage generating circuit is coupled with the low level output end of the switching power supply.

[0022] In some possible implementation manners, the first high frequency voltage generating circuit is a multi-level selection circuit; the switching power supply circuit comprises: a first switching power supply sub-circuit and a second switching power supply sub-circuit; the high level output end of the first switching power supply sub-circuit is used as the first output end of the switching power supply circuit;

[0023] The radio frequency power supply further comprises:

[0024] The low level output end of the first switching power supply sub-circuit is coupled with the high level output end of the second switching power supply sub-circuit and the low level voltage input end of the multi-level selection circuit; the low level output end of the second switching power supply sub-circuit is grounded.

[0025] The first output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply, comprising:

[0026] The high level output end of the first switching power supply sub-circuit is coupled with the high level input end of the multi-level selection circuit.

[0027] In some possible implementation manners, the first high frequency voltage generating circuit comprises: a first multi-level selection sub-circuit and a second multi-level selection sub-circuit, and the output end of the first multi-level selection circuit is used as the output end of the first high frequency voltage generating circuit.

[0028] The switching power supply circuit comprises: a third switching power supply sub-circuit, a fourth switching power supply sub-circuit and a fifth switching power supply sub-circuit; the high level output end of the third switching power supply sub-circuit is used as the first output end of the switching power supply circuit.

[0029] The radio frequency power supply further comprises:

[0030] The low level output end of the third switching power supply sub-circuit is coupled with the high level output end of the fourth switching power supply sub-circuit and the low level input end of the first multi-level selection sub-circuit.

[0031] The low level output end of the fourth switch power supply sub-circuit is coupled with the high level output end of the second multi-level selection sub-circuit; the low level input end of the second multi-level selection sub-circuit is grounded; the high level output end of the fifth switch power supply sub-circuit is coupled with the high level input end of the second multi-level selection sub-circuit, and the low level output end is grounded;

[0032] The first output end of the switch power supply circuit is coupled with the first output end of the radio frequency power supply, and comprises:

[0033] The high level output end of the third switch power supply sub-circuit is coupled with the high level input end of the first multi-level selection sub-circuit.

[0034] In some possible implementation manners, the first high frequency voltage generation circuit is integrated with the corresponding PA to form a PA module.

[0035] In some possible implementation manners, when the first high frequency voltage generation circuit is implemented by the LA circuit, the PA corresponding to the first high frequency voltage generation circuit is an FDD-supporting PA; or,

[0036] When the first high frequency voltage generation circuit is implemented by the bias voltage generation circuit, the PA corresponding to the first high frequency voltage generation circuit is a TDD-supporting PA.

[0037] In a second aspect, the embodiments of the present application provide an electronic device, comprising the radio frequency power supply of any one of the first aspect. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 The energy consumption diagram of an application running for one hour in the electronic device provided by the embodiments of the present application is shown;

[0039] Figure 2 The gap change diagram between the battery power supply capacity of a mobile phone and the application power consumption provided by the embodiments of the present application is shown;

[0040] Figure 3 The high efficiency transmitter architecture diagram provided by the embodiments of the present application is shown;

[0041] Figure 4 The diagram combining the drain modulation with the Doherty technology provided by the embodiments of the present application is shown;

[0042] Figure 5 The diagram combining the drain modulation with the outphasing technology provided by the embodiments of the present application is shown;

[0043] Figure 6A The architecture diagram of the ETM provided by the embodiments of the present application is shown;

[0044] Figure 6B The voltage waveform diagram of the AET, DET and APT outputs provided by the embodiments of the present application is shown;

[0045] Figure 6C A schematic diagram of the instantaneous output voltages of APT, AET, and DET provided for embodiments of this application;

[0046] Figure 7 A schematic diagram of the structure of the RFFE provided in the embodiments of this application;

[0047] Figure 8A A schematic diagram of the spectrum of the baseband modulation signal and the envelope signal provided in the embodiments of this application;

[0048] Figure 8B A schematic diagram illustrating the bandwidth of the envelope signal and the bandwidth of the modulation signal provided in the embodiments of this application;

[0049] Figure 8C A schematic diagram illustrating the relationship between the energy distribution and frequency of the envelope signal provided in an embodiment of this application;

[0050] Figure 9A A schematic diagram of the structure of a radio frequency power supply provided in an embodiment of this application;

[0051] Figure 9B Another schematic diagram of the structure of the radio frequency power supply provided in the embodiments of this application;

[0052] Figure 9C This is a schematic diagram of a third structure of the radio frequency power supply provided in an embodiment of this application;

[0053] Figure 9D This is a schematic diagram of a fourth structure of the radio frequency power supply provided in the embodiments of this application;

[0054] Figure 10 A schematic diagram of a fifth structure of the radio frequency power supply provided in the embodiments of this application;

[0055] Figure 11 A schematic diagram of a sixth structure of a radio frequency power supply provided in an embodiment of this application;

[0056] Figure 12 A schematic diagram of a seventh structure of a radio frequency power supply provided in an embodiment of this application;

[0057] Figure 13 A schematic diagram of the eighth structure of the radio frequency power supply provided in the embodiments of this application;

[0058] Figure 13 for Figure 13 The equivalent circuit diagram of the RF power supply is shown.

[0059] Figure 13 A schematic diagram of the structure of the radio frequency power supply provided in the embodiments of this application;

[0060] Figure 13 The simulation schematic diagram of the output waveform of the radio frequency power supply in different structures provided by the embodiment of the present application is shown in the following table:

[0061] Figure 13 The output waveform of the radio frequency power supply when the controller controls the switching power supply circuit by using the APT control strategy is shown in the following table:

[0062] Figure 14 The output waveform of the radio frequency power supply when the controller controls the switching power supply circuit by using the APT control strategy and simultaneously controls the LA circuit is shown in the following table:

[0063] Figure 13 The ninth structure schematic diagram of the radio frequency power supply provided by the embodiment of the present application is shown in the following table:

[0064] Figure 15C The equivalent circuit schematic diagram of the radio frequency power supply shown in the following table: Figure 15D

[0065] The tenth structure schematic diagram of the radio frequency power supply provided by the embodiment of the present application is shown in the following table: Figure 15A

[0066] The eleventh structure schematic diagram of the radio frequency power supply provided by the embodiment of the present application is shown in the following table: Figure 15C

[0067] The output voltage schematic diagram of the first output end of the radio frequency power supply shown in the following table: Figure 15B Figure 15D The simulation circuit schematic diagram of the radio frequency power supply shown in the following table:

[0068] Figure 16A Figure 16A The output voltage schematic diagram of the simulation circuit shown in the following table:

[0069] Figure 16C The twelfth structure schematic diagram of the radio frequency power supply provided by the embodiment of the present application is shown in the following table:

[0070] Figure 17A The thirteenth structure schematic diagram of the radio frequency power supply provided by the embodiment of the present application is shown in the following table:

[0071] Figure 17B The output voltage schematic diagram of the first output end of the radio frequency power supply shown in the following table: Figure 17A

[0072] The simulation circuit schematic diagram of the radio frequency power supply shown in the following table: Figure 17B Figure 18 The output voltage schematic diagram of the simulation circuit shown in the following table:

[0073] Figure 13 Figure 18

[0074] Figure 18 ​​​​​A fourteenth structural schematic diagram of a radio frequency power supply provided by an embodiment of the present application is shown in FIG. 14.

[0075] Figure 18 A fifteenth structural schematic diagram of a radio frequency power supply provided by an embodiment of the present application is shown in FIG. 15.

[0076] Figure 18 A fifteenth structural schematic diagram of a radio frequency power supply provided by an embodiment of the present application is shown in FIG. 15. Figure 18 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0077] Figure 18 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16. Figure 18 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0078] Figure 19 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16. Figure 20A A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0079] Figure 20A A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0080] Figure 20B A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0081] Figure 20A A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0082] Figure 18 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16.

[0083] Figure 21 A schematic diagram of an output voltage of a first output end of the radio frequency power supply shown in FIG. 15 is shown in FIG. 16. DETAILED DESCRIPTION

[0084] The terms used in the implementation part of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

[0085] Research shows that wireless systems and digital ecosystems are increasing energy consumption, specifically, the more people use wireless electronic devices, the more energy they consume. For example, the main goal of 5G networks is to allow consumers to use more devices at a faster speed than ever before, and this goal will certainly increase the use of global energy, in other words, the use of 5G networks will increase the consumption of energy by several times. Future wireless communication systems such as 6G and the like need to support larger bandwidth, higher transmission rate, and support generative artificial intelligence (Generative AI) technology, which will inevitably lead to further increase in power consumption of wireless communication devices.

[0086] For the above reasons, the manufacturing and use of the electronic devices described above using wireless communication, such as 5G networks or 6G networks, etc., can become a major contributor to climate change:

[0087] 1. The way mobile phones, computers, and other everyday devices are manufactured puts pressure on the environment: from chips, to devices, to the final assembly of the whole machine, it takes a lot of electricity and other resources to make them;

[0088] 2. The increase in energy consumption of electronic devices is affecting the environment: there are currently about 6 billion mobile electronic devices in use, and this number is expected to increase dramatically as the global population grows and new devices enter the market. One estimate of the carbon emissions for the life cycle of a single device (not including associated accessories and network connections) is that, at a medium level of use over three years, a device generates a total of 45 kg of CO2. This emission is comparable to the emissions of an average European car driving 300 km. See, for example, Figure 20A The maximum carbon emissions, maximum water emissions, and maximum footprint, etc. of some applications running for one hour in electronic devices are shown, for example, using an electronic device for only one hour of video conferencing or streaming media emits 150-1000 grams of CO2 (an automobile burning one gallon of gasoline emits about 8,887 grams of carbon), and requires 2-12 liters of water.

[0089] 3. The increasing number of electronic devices in the market and in homes is another environmental threat: taking the example of Internet of Things (IoT) devices, while some IoT devices promise to reduce energy use, the energy required for the 50 billion new IoT devices expected to be produced and used in the future will far exceed the energy used by today's electronic devices.

[0090] In addition, as the use of features such as screen size in electronic devices increases, use cases such as video consumption, cameras, and navigation-based applications are affecting the battery life of electronic devices such as mobile phones. As shown in Figure 20B What is the most energy-efficient technology for the radio frequency part of an electronic device such as a mobile phone when the gap between the energy of the battery and the energy demand of the application is constantly increasing? We need to analyze from multiple dimensions such as architecture, device process, and system control to give the correct answer.

[0091] Mobile communication has become a part of daily life and is a ubiquitous system for most of the world's population. Mobile communication technology has also gradually transitioned from the traditional voice communication-centered era to the 4G era of mobile broadband, and now the industry is working hard to lead humanity into the 5G era, 6G era, etc.

[0092] With the increasing demand of users for mobile wireless communication technology, the requirement for communication rate is higher and higher, and users require to access to the wireless communication network anytime and anywhere. These requirements lead to the rapid development of wireless communication technology. Electronic devices supporting wireless communication technology need to support various communication modes and standards, from 4G long term evolution (LTE) to 5G new radio (NR), from early wifi to wifi 6 today; the communication bandwidth is wider and wider: from 1.4MHz LTE to 100MHz or even 200MHz bandwidth of 5G NR; in addition, in wideband wifi and millimeter wave communication systems, the bandwidth of the signal is wider. At the same time, with the increase of frequency band number and support for higher level wireless communication characteristics such as uplink carrier aggregation (CA) and uplink multiple input multiple output (MIMO), several uplink transmitters are required to work at the same time; at the same time, the current terminal transmitter is a transmitter system of multiple wireless communication systems such as wifi, cellular and satellite communication, which needs multiple power supply voltages; at the same time, in order to improve the coverage of the cellular system and make up for the loss between the output of the RFPA and the antenna, the output power of the RFPA becomes larger and larger.

[0093] The service life of electronic devices is closely related to the capacity of the battery and the system efficiency. Under the background that the capacity of the battery cannot continue to expand and the power consumption of other parts in the electronic device is increasing, it is very meaningful to improve the power consumption of the radio frequency part, especially the radio frequency PA system which occupies the largest part of the power consumption, to prolong the service life of the electronic device. Among various technologies for improving the efficiency of the PA system, the envelope tracking (ET) technology with frequency agility is particularly valued. The ETPA system has gradually become a standard configuration in electronic devices, especially in high-end mobile phones.

[0094] The transmitter technology commonly used in electronic devices includes Doherty, linear amplification with nonlinear components (LINC), ET, Class S, etc. Among them, the ET technology becomes the preferred architecture of the high-efficiency power amplifier system of the electronic device because it supports multi-frequency and multi-mode configuration.

[0095] Therefore, in some examples, the high-efficiency transmitter architecture used in the electronic device is, for example Figure 22AAs shown. A high-efficiency transmitter architecture is a combined architecture designed to operate the power amplifier as close to saturation as possible. This is achieved by adjusting the supply voltage (drain modulation, such as ET) or adjusting the load impedance (load modulation, such as Doherty, Outphasing). Only drain modulation (such as ET) combines low-frequency (envelope domain) and high-frequency (RF domain) modulation. Therefore, drain modulation (such as ET) can be combined with other high-efficiency transmitter architectures, i.e., drain modulation (such as ET) + Doherty, for example... Figure 22B As shown, drain modulation (e.g., ET) + outphasing, for example Figure 22A As shown.

[0096] To power the RFPA, such as Figure 22B As shown, the architecture of the envelope tracking modulator (ETM) includes: digital ETM (Digital_ET), analog envelope tracker (AET), and discrete envelope tracker (DET).

[0097] Pure digital ETM power supplies have the following disadvantages:

[0098] 1. High switching frequency requirement: 10X signal bandwidth, 100MHz, switching frequency requirement 1GHz;

[0099] 2. The abundant output stray signals of a switching power supply mean that the requirements for the filter circuit after the power supply are high;

[0100] Because pure digital ETMs require high switching frequencies from the switching devices, current implementations are quite difficult; therefore, the embodiments in this application mainly target... Figure 23A The AET and DET shown.

[0101] Figure 23A The diagram shows the waveforms of the supply voltage outputs from AET, DET, and APT. AET outputs a smooth waveform signal, DET outputs a square wave signal, and APT outputs a DC voltage signal. Figure 23A The instantaneous output voltage diagrams of the three power management technologies, APT, AET, and DET, show that their improvement effect on RFPA efficiency, from highest to lowest, is AET, DET, and APT.

[0102] Table 1 below shows the system features and application scope of AET and DET.

[0103] Figure 23A Figure 23B Figure 18 Figure 23B Figure 24 Figure 23B Figure 24 Figure 23B Figure 25 Figure 26 Figure 27A Figure 27A Figure 23A tight (<1 cm @ 100 MHz) Figure 27A Figure 27B Figure 27A Figure 18

[0104] Table 1

[0105] However, the design of the radio frequency front end (RFFE) subsystem of the mobile and wireless communication system in the electronic device becomes more and more complex, the radio frequency transmitter is a multi-RFPA system, and needs to support multiple characteristics, such as Figure 28 As shown, including:

[0106] 1) Multi-band: needs to support from Sub-1GHz to Sub-6Hz, to mmWave, and even to THz;

[0107] 2) Multi-system: needs to support 4G, 5G, WIFI and other mobile and wireless communication systems;

[0108] 3) Multi-duplex: needs to support multiple duplex modes, such as TDD duplex mode, FDD duplex mode, and even full duplex mode, etc.;

[0109] 4) Multi-antenna: needs to support MIMO, Beamforming and other multi-antenna systems;

[0110] Supporting the above characteristics requires the transmitter system to use multiple RFPA, and each PA has different specification requirements for the transmission frequency band, bandwidth, noise and other specifications of the supported system, which results in different requirements for their power supply system.

[0111] The ETM architecture described above cannot meet the power supply requirements of PAs with different characteristics, thereby resulting in poor performance of the radio frequency power supply.

[0112] Therefore, the embodiment of the present application also provides a high-performance radio frequency power supply capable of supplying power to PAs with different characteristics. The PA in the embodiment of the present application may be, for example, an RFPA.

[0113] Figure 29 is a schematic diagram of the spectrum of the baseband modulation signal and the envelope signal, Figure 30 is a schematic diagram of the bandwidth of the envelope signal and the bandwidth of the modulation signal, Figure 31 is a schematic diagram of the relationship between the energy distribution of the envelope signal and the frequency. Based on the above schematic diagram, it can be seen from the spectrum analysis of the envelope signal of the wireless and mobile communication modulation signal that most of the energy of the envelope signal is concentrated near the low frequency, which is the basis for the radio frequency power supply provided by the embodiment of the present application to achieve high performance.

[0114] Specifically, in the embodiments of the present application, the envelope signal is split into a low-frequency part and a high-frequency part, a voltage signal corresponding to the low-frequency part of the envelope signal is output by the switching power supply circuit, a voltage signal corresponding to the high-frequency part of the envelope signal is output by the high-frequency voltage generation circuit, and the two voltage signals are superimposed to obtain a voltage signal corresponding to the envelope signal, which is used to power the PA.

[0115] Moreover, in the radio frequency power supply, each high-frequency voltage generation circuit can correspond to one PA, and the switching power supply circuit can simultaneously output voltage signals for two or more PAs.

[0116] Figure 32 A structural schematic diagram of the radio frequency power supply provided by the embodiments of the present application is shown in FIG. 1. As shown in FIG. 1, the radio frequency power supply can include a controller, a switching power supply circuit, a first high-frequency voltage generation circuit, and a second high-frequency voltage generation circuit. Figure 32

[0117] The controller is coupled to the switching power supply circuit, the first high-frequency voltage generation circuit, and the second high-frequency voltage generation circuit, respectively.

[0118] The first output end of the switching power supply circuit is coupled to the first output end OUT1 of the radio frequency power supply, and outputs a first target voltage signal to the first output end OUT1 of the radio frequency power supply.

[0119] The output end of the first high-frequency voltage generation circuit is coupled to the first output end OUT1 of the radio frequency power supply, and outputs a second target voltage signal to the first output end OUT1 of the radio frequency power supply.

[0120] The first output end OUT1 of the radio frequency power supply is used to power the first PA, and outputs a first voltage signal obtained by superimposing the first target voltage signal and the second target voltage signal to the first PA. The first target voltage signal and the second target voltage signal are determined according to a first envelope signal corresponding to the first PA.

[0121] The second output end of the switching power supply circuit is coupled to the second output end OUT2 of the radio frequency power supply, and outputs a third target voltage signal to the second output end OUT2 of the radio frequency power supply.

[0122] The voltage output end of the second high-frequency voltage generation circuit is coupled to the second output end OUT2 of the radio frequency power supply, and outputs a fourth target voltage signal to the second output end OUT2 of the radio frequency power supply.

[0123] The second output end OUT2 of the radio frequency power supply is used to power the second PA, and outputs a second voltage signal obtained by superimposing the third target voltage signal and the fourth target voltage signal to the second PA. The third target voltage signal and the fourth target voltage signal are determined according to a second envelope signal corresponding to the second PA.

[0124] ​Optionally, the controller can be configured to determine the first target voltage signal and the second target voltage signal according to the first envelope signal, control the switching power supply circuit to output the first target voltage signal, and control the first high-frequency voltage generation circuit to output the second target voltage signal. Specifically, the controller can split the first envelope signal into a low-frequency signal and a high-frequency signal, determine the first target voltage signal required by the first output end of the switching power supply circuit according to the low-frequency signal, and determine the second target voltage signal required by the first high-frequency voltage generation circuit according to the high-frequency signal. It should be noted that in some embodiments, the controller can also only split the low-frequency signal from the first envelope signal, and at this time, the second target voltage signal required by the first high-frequency voltage generation circuit can be directly determined according to the first envelope signal. The controller can specifically output a control signal to the control end of the switching power supply circuit to control the first output end of the switching power supply circuit to output the first target voltage signal, and output a control signal to the control end of the first high-frequency voltage generation circuit to control the first high-frequency voltage generation circuit to output the second target voltage signal. The specific implementation of the control signal is not described herein.

[0125] Optionally, the controller can also be configured to determine the third target voltage signal and the fourth target voltage signal according to the second envelope signal, control the switching power supply circuit to output the third target voltage signal, and control the second high-frequency voltage generation circuit to output the fourth target voltage signal. Specifically, the controller can split the second envelope signal into a low-frequency signal and a high-frequency signal, determine the third target voltage signal required by the second output end of the switching power supply circuit according to the low-frequency signal, and determine the fourth target voltage signal required by the second high-frequency voltage generation circuit according to the high-frequency signal. It should be noted that in some embodiments, the controller can also only split the low-frequency signal from the second envelope signal, and at this time, the fourth target voltage signal required by the second high-frequency voltage generation circuit can be directly determined according to the second envelope signal. The controller can specifically output a control signal to the control end of the switching power supply circuit to control the second output end of the switching power supply circuit to output the third target voltage signal, and output a control signal to the control end of the second high-frequency voltage generation circuit to control the second high-frequency voltage generation circuit to output the fourth target voltage signal. The specific implementation of the control signal is not described herein.

[0126] It should be noted that the high frequency and the low frequency referred to in the embodiments of the present application are relative concepts, and there is no clear dividing line, which will be different according to different scenarios.

[0127] It can be understood that the envelope signal corresponding to each PA is related to the radio frequency signal required to be transmitted by the PA, and the generation method of the envelope signal (for example, the first envelope signal and the second envelope signal) corresponding to each PA is not described herein.

[0128] Optionally, the controller determines and controls the output voltage signal (e.g., the first target voltage signal, the second target voltage signal) outputted by the output terminal (e.g., the first output terminal, the second output terminal) of the switching power supply circuit according to the low frequency signal of the envelope signal (e.g., the first envelope signal, the second envelope signal) can be achieved by a preset control mechanism, for example, the preset control mechanism can be Average Power Tracking (APT), Symbol Power Tracking (SPT), or other control mechanisms of the PA supply voltage, for example, the control signal of the switching power supply circuit generated by the PWM modulator or the hysteresis comparator according to the low frequency signal, and the embodiments of the present application are not limited.

[0129] The controller splits the envelope signal into a low frequency signal and a high frequency signal can be achieved by related technologies, and the embodiments of the present application are not limited. In some embodiments, the low frequency signal can be a direct current component of the envelope signal, and specifically can be a minimum voltage value or an RMS value in a period of time such as a time slot or a symbol, and the high frequency signal can be an alternating current component of the envelope signal. In some embodiments, the direct current component can be a signal average value of the envelope signal, and the alternating current component can be obtained by removing the direct current component from the envelope signal.

[0130] Optionally, the switching power supply circuit can be a charge pump based on a switching capacitor, a single-inductor multiple-output (SIMO) converter, a buck circuit, a boost circuit, or a buck-boost circuit, etc., as long as it can output the required target voltage signal under the control of the controller. Optionally, the switching power supply circuit is a low frequency switching power supply circuit.

[0131] It should be noted that the high frequency switching power supply and the low frequency switching power supply referred to in the embodiments of the present application are relative concepts, and there is no clear dividing line. In some embodiments, the switching frequency of the high frequency switching power supply can be higher than 50 kHz, and the switching frequency of the low frequency switching power supply is less than the switching frequency of the high frequency switching power supply.

[0132] Optionally, the first high frequency voltage generating circuit can be implemented by an LA circuit or a bias voltage generating circuit, and the bias voltage generating circuit can be a high speed switching power supply circuit or a multi-voltage selection circuit, etc.

[0133] Optionally, the second high frequency voltage generating circuit can also be implemented by an LA circuit or a bias voltage generating circuit.

[0134] It should be noted that the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit can be implemented by the same circuit or different circuits, and the embodiments of the present application do not make any limitation. For example, the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit can be LA circuits respectively, such as shown in the RF power supply of Figure 32 ; or the first high-frequency voltage generating circuit can be an LA circuit, and the second high-frequency voltage generating circuit can be a bias voltage generating circuit, such as shown in the RF power supply of Figure 32 ; or the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit can be bias voltage generating circuits respectively, such as shown in the RF power supply of Figure 33 , at this time, the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit can be implemented by the same or different bias voltage generating circuits, and the present application will not be enumerated one by one. In the related art, the combination of the switching power supply circuit and the LA circuit in the embodiments of the present application can be referred to as an RF power supply in AET mode, and the combination of the switching power supply circuit and the bias voltage generating circuit in the embodiments of the present application can be referred to as an RF power supply in DET mode. It can be understood that when the RF power supply is implemented by the structure shown in Figure 34 , the RF power supply includes AET and DET two modes, which is a multi-mode implementation manner, thereby improving the adaptability of the RF power supply to different scenes.

[0135] In some embodiments, the above-mentioned controller can be implemented by a radio frequency integrated circuit (RFIC). In some embodiments, the functions of the controller in the above-mentioned embodiments can be split and implemented by multiple controllers, and the embodiments of the present application do not make any limitation.

[0136] In the above-mentioned embodiments, the switching power supply circuit includes two output terminals, which are coupled to the first output terminal OUT1 and the second output terminal OUT2 respectively. In other embodiments, if the voltage signals required by the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit are the same, the switching power supply circuit can only have one output terminal coupled to the first output terminal OUT1 and the second output terminal OUT2 respectively, and the connection relationship is shown in, for example, Figure 35 .

[0137] ​ In the above-mentioned embodiments, the RF power supply includes two high-frequency voltage generating circuits, i.e., the first high-frequency voltage generating circuit and the second high-frequency voltage generating circuit. In other embodiments, the RF power supply can include three or more high-frequency voltage generating circuits, such as shown in the RF power supply of ​ , the switching power supply circuit is provided with n output terminals, the RF power supply further includes n high-frequency voltage generating circuits, and the n output terminals can be coupled to n PAs to supply power to the n PAs respectively.

[0138] It should be noted that when the radio frequency power supply includes three or more high frequency voltage generation circuits, different output terminals of the switching power supply circuit can be coupled to one output terminal or multiple output terminals of the radio frequency power supply, and embodiments of the present application do not make any limitation, for example ​ As shown in FIG. 6, one output terminal of the switching power supply circuit is coupled to the output terminals OUT1 and OUT2 of the radio frequency power supply, and another output terminal of the switching power supply circuit is coupled to the output terminal OUT of the radio frequency power supply.

[0139] The radio frequency power supply provided by the embodiments of the present application adopts a new implementation architecture of the radio frequency power supply, and the same radio frequency power supply can include multiple LA circuits or multiple high frequency voltage generation circuits, so that the LA circuit which is sensitive to parasitic parameters can be combined with the FDD PA, and the high frequency voltage generation circuit can be combined with the TDD PA, thereby effectively reducing the influence of parasitic parameters on the performance of the power supply and improving the performance of the radio frequency power supply.

[0140] In addition, the radio frequency power supply provided by the embodiments of the present application separates the low frequency signal of the envelope signal corresponding to each PA, and outputs the low frequency part voltage signal required by multiple PAs through a switching power supply circuit, thereby forming a power resource pool, without the need to separately set a switching power supply circuit for each PA, thereby reducing the cost of the radio frequency power supply in the radio frequency system.

[0141] Moreover, the line-of-sight architecture of the radio frequency power supply formed by the switching power supply circuit and the multiple high frequency voltage generation circuits can also produce the following additional system benefits, for example:

[0142] The radio frequency power supply of the embodiments of the present application controls the voltage signals output by the switching power supply circuit and the high frequency voltage generation circuit according to the low frequency and high frequency characteristics of the first envelope signal, which is a kind of feedforward control mode, can avoid the lag effect introduced by the feedback control loop, and is beneficial to improve the performance and efficiency of the radio frequency power supply; Moreover, the feedforward control mode is adopted to control the switching power supply circuit and the high frequency voltage generation circuit, which can simplify the hardware design;

[0143] The switching power supply circuit and the LA circuit can adopt different chip technologies, which can take into account the performance of the radio frequency unit while reducing the implementation cost of the radio frequency power supply;

[0144] Compatible with existing platforms, for example, the above-mentioned switching power supply circuit can be controlled by APT or other methods (such as SPT, etc.);

[0145] The switching power supply for generating low frequency DC voltage can follow the existing APT Buck-Boost power supply or other more advanced switching power supply such as SPT power supply;

[0146] The high frequency voltage generation circuit and the switching power supply can maintain different technical evolution paths.

[0147] The circuit implementation structure between the controller, the switching power supply circuit, the first high-frequency voltage generating circuit and the first output terminal OUT1 of the radio frequency power supply is exemplarily illustrated by examples as follows. It can be understood that the circuit implementation structure between the controller, the switching power supply circuit, the second high-frequency voltage generating circuit and the second output terminal OUT1 of the radio frequency power supply can also be implemented by referring to the following circuit structure, which will not be listed one by one here.

[0148] In some embodiments, when the first high-frequency voltage generating circuit is implemented by the LA circuit, the circuit implementation structure between the switching power supply circuit, the first high-frequency voltage generating circuit and the first output terminal OUT1 of the radio frequency power supply is implemented, for example, as shown in the following figure. ​ In the figure, the first output terminal of the switching power supply circuit and the output terminal of the LA circuit are respectively coupled to the first output terminal OUT1 of the radio frequency unit.

[0149] As shown in the following figure, in some embodiments, the switching power supply circuit of the radio frequency power supply is implemented by a buck-boost circuit, which can specifically include: ​ The voltage supply end VIN is grounded through the serially connected PMOS tube S1 and NMOS tube S5, and is coupled to the drain of the NMOS tube S5 through the serially connected PMOS tube S2, PMOS tube S3 and NMOS tube S4; the drain of the PMOS tube S3 is coupled to the drain of the NMOS tube S5 through the capacitor C1; the drain of the PMOS tube S3 is coupled to the first end of the inductor L2 through the NMOS tube S6, and the second end of the inductor L2 is coupled to the first output terminal of the switching power supply circuit;

[0150] The voltage supply end VIN is grounded through the serially connected PMOS tube S7 and NMOS tube S11, and is coupled to the drain of the NMOS tube S11 through the serially connected PMOS tube S8, PMOS tube S9 and NMOS tube S10; the drain of the PMOS tube S9 is coupled to the drain of the NMOS tube S11 through the capacitor C2; the drain of the PMOS tube S9 is coupled to the first end of the inductor L2 through the NMOS tube S12;

[0151] The drain of the NMOS tube S4 is coupled to the drain of the NMOS tube S10, and is grounded through the serially connected inductor L1 and capacitor C3;

[0152] One end of the inductor L1 and the capacitor C3 coupled to each other serves as a control terminal of the switching power supply circuit, and is coupled to the output terminal of the controller to receive the control signal output by the controller, so as to control the switching power supply circuit to output the first target voltage signal.

[0153] In the figure, the inductor L2 mainly plays an isolation role in the switching power supply circuit, and can be omitted.

[0154] As shown in the following figure, in some embodiments, the switching power supply circuit of the radio frequency power supply is implemented by a buck-boost circuit, which can specifically include:

[0155] ​ ​As shown, in some embodiments, the LA circuit of the RF power supply can include:

[0156] The input end of the linear amplifier LA1 is coupled to the output end of the controller to receive the control signal of the output end of the controller, so that the output end of the linear amplifier LA1 outputs the second target voltage signal.

[0157] The output end of the linear amplifier LA1 is coupled to the first output end OUT1 of the RF power supply.

[0158] In some embodiments, the controller can send the high-frequency signal split from the first envelope signal corresponding to the PA1 to the input end of the linear amplifier LA1 as the control signal, or the controller can send the first envelope signal corresponding to the PA1 to the input end of the linear amplifier LA1 as the control signal; in other words, the control signal sent by the controller to the input end of the linear amplifier LA1 can be the first envelope signal or the high-frequency signal split from the first envelope signal.

[0159] In some embodiments, as shown, ​ The output end of the linear amplifier LA1 can be coupled to the first output end OUT1 of the RF power supply through the capacitor C4.

[0160] In some embodiments, as shown, ​ The output end of the linear amplifier LA1 is coupled to the input end of the linear amplifier LA1 to feed back the voltage signal output by the output end of the linear amplifier LA1 to the input end of the linear amplifier LA1 as the feedback signal of the linear amplifier LA1, so as to improve the accuracy of the output voltage of the LA circuit.

[0161] ​ The equivalent circuit diagram of the circuit is shown in ​ As shown, the switching power supply circuit can be equivalent to a current source, and the linear amplifier LA1 can be equivalent to a voltage source. The current on the load R_Load (corresponding to the first PA) can be represented by the equation: iPA=iL+

[0162] V_LA / R_Load.

[0163] In addition to being coupled through the inductor L2 (for example, as shown in ​ 、 15A and 15B), as shown in ​ and ​ The first output end of the switching power supply circuit can also be coupled to the first output end OUT1 of the RF power supply through two series-connected inductors L01 and L02. At this time, the connection point between the two inductors can be grounded through the capacitor C01 to achieve the effect of filtering through the capacitor.

[0164] As shown in ​and ​ As shown, one end of capacitor C4 coupled to the first output terminal OUT1 of the RF power supply can be coupled to the input terminal of linear amplifier LA1, so that the voltage signal output by the LA circuit to the first output terminal OUT1 of the RF power supply can be used as the feedback signal of linear amplifier LA1. In other embodiments, such as ​ and ​ As shown, the output terminal of linear amplifier LA1 can also be coupled to the input terminal of linear amplifier LA1, so that the voltage signal output by linear amplifier LA1 can be used as the feedback signal of linear amplifier LA1.

[0165] pass ​ The performance of the radio frequency power supply provided in the embodiments of this application will be described by way of example.

[0166] like ​ The simulation diagrams of the output voltage of different circuit structures are shown. Comparing the RF power supply with only the switching power supply circuit and the RF power supply with both the switching power supply circuit and the high-frequency voltage generation circuit, the RF power supply with only the switching power supply circuit produces a relatively higher amplitude of the supply voltage for the RF PA.

[0167] like ​ and ​ The measured output voltage structures of different circuit configurations are shown, among which... ​ The diagram shows the voltage output at the first output terminal OUT1 of the RF power supply, which includes only the switching power supply circuit, when the controller adopts the APT control strategy. ​ The diagram shows the voltage output at the first output terminal OUT1 of the RF power supply, which includes a switching power supply circuit and an LA circuit, when the controller adopts the APT control strategy. It can be seen that the voltage output at the first output terminal OUT1 of the RF power supply, which includes a switching power supply circuit and an LA circuit, provided in this embodiment is closer to the waveform of the envelope signal, thus exhibiting better power supply performance.

[0168] In some embodiments, when the first high-frequency voltage generation circuit is implemented through a deviation voltage generation circuit, the circuit implementation structure between the controller, the switching power supply circuit, the first high-frequency voltage generation circuit, and the first output terminal OUT1 of the RF power supply is as follows: ​ As shown.

[0169] Among them, the implementation structure of the switching power supply circuit and ​ The implementation structure of the switching power supply circuit shown is the same, so it will not be described in detail here.

[0170] like ​ As shown, the deviation voltage generation circuit can be implemented using a high-frequency switching power supply circuit. Specifically, the deviation voltage generation circuit may include:

[0171] The voltage supply terminal VIN is grounded through PMOS transistors S14, S15, S16, and S18 connected in series, and is also coupled to the drain of NMOS transistor S18 through PMOS transistor S17. The drain of PMOS transistor S15 is coupled to the drain of NMOS transistor S18 through capacitor C3.

[0172] The drain of NMOS transistor S16 serves as the control signal receiving terminal of the deviation voltage generation circuit, which is used to couple to the controller and receive the control signals sent by the controller.

[0173] The drain of PMOS transistor S15 is coupled to the output of the deviation voltage generation circuit through NMOS transistor S13.

[0174] In some embodiments, such as ​ As shown, the output of the deviation voltage generation circuit can be coupled to the first output terminal OUT1 of the RF power supply through inductor L3.

[0175] In some embodiments, such as ​ As shown, the deviation voltage generation circuit can also be replaced by other high-frequency switching power supply circuits. ​ (Only the equivalent diagram is shown) or a multi-level selection circuit.

[0176] like ​ As shown, a multi-level selection circuit may specifically include:

[0177] The output of the multilevel selection circuit is connected to PMOS transistors S19, S20 and S21 through inductor L4. A capacitor C4 is connected between PMOS transistors S19 and S20. PMOS transistor S20 is also connected to the voltage input of the multilevel selection circuit through capacitor C5.

[0178] PMOS transistor S21 is grounded through capacitor C7 and also connected to the voltage input terminal of the multi-level selection circuit through capacitor C6.

[0179] Understandable ​ The implementation structure of the multilevel selection circuit shown is only an example. The deviation voltage generation circuit of this application embodiment can also be implemented by other multilevel selection circuits.

[0180] ​ The equivalent circuit diagram of the circuit shown is as follows: ​ As shown, the switching power supply circuit can be equivalent to a current source, while the deviation voltage generation circuit can be equivalent to another small current source. The current on the load R_Load can be represented by the equation: iPA=iL+I_MV.

[0181] When the first high-frequency voltage generating circuit is implemented by the high-speed switching power supply circuit, the circuit connection relationship among the above-mentioned controller, the switching power supply circuit, the first high-frequency voltage generating circuit, and the first output terminal OUT1 of the radio frequency power supply is shown in FIG. 1, for example. ​

[0182] The low-level output terminal of the high-frequency switching power supply circuit is grounded, and the high-level output terminal is coupled to the low-level output terminal of the switching power supply circuit, so that the high-level output terminal of the high-frequency switching power supply circuit can pull up the voltage of the low-level output terminal of the switching power supply circuit, so that the voltage of the low-level output terminal of the switching power supply circuit is the voltage of the high-level output terminal of the high-frequency switching power supply circuit.

[0183] The high-level output terminal of the switching power supply circuit is coupled to the first output terminal OUT1 of the radio frequency power supply, so that the voltage of the first output terminal OUT1 of the radio frequency power supply is the superimposed voltage of the output voltage of the high-frequency switching power supply circuit and the output voltage of the switching power supply circuit.

[0184] Through the above-mentioned connection relationship, the voltage signal output by the first output terminal OUT1 of the radio frequency power supply is the voltage signal obtained by superimposing the second target voltage signal output by the high-frequency switching power supply circuit (i.e. the first high-frequency voltage generating circuit) and the first target voltage signal output by the switching power supply circuit.

[0185] It should be noted that, ​ In the circuit connection relationship shown in FIG. 1, it can be considered that the high-level output terminal of the high-frequency switching power supply circuit is coupled to the first output terminal OUT1 of the radio frequency power supply through the switching power supply circuit,

[0186] For example, as shown in FIG. 2, the circuit connection relationship is shown. ​ As shown in FIG. 2, the circuit connection relationship is shown. ​ The equivalent circuit structures of the switching power supply circuit and the high-frequency switching power supply circuit in the circuit shown in FIG. 2 can be implemented by the switching power supply circuit in the related art, for example, as shown in FIG. 3, which will not be described here. ​

[0187] ​ ​ and ​ The principle of the circuit connection relationship shown in FIG. 1 is shown in FIG. 4, where the control period is an example of a time slot. The direct current voltage signal in a time slot can be output by the switching power supply circuit, and the stepped voltage signal in each time slot can be output by the high-frequency switching power supply circuit. The stepped high-frequency voltage signal shown in ①②③④ is obtained by superimposing the voltages output by the two circuits, so that the superimposed signal of the voltage signals output by the two circuits corresponds to the first envelope signal of the first PA.

[0188] ​​​It should be noted that in other embodiments, the positions of the switching power supply circuit and the high-frequency switching power supply circuit can be interchanged, that is, the low-level output end of the switching power supply circuit is grounded, the high-level output end of the switching power supply circuit is coupled to the low-level output end of the high-frequency switching power supply circuit, and the low-level output end of the high-frequency switching power supply circuit is coupled to the first output end OUT1 of the radio frequency power supply.

[0189] In this implementation, in each control time slot, the switching power supply circuit can output a direct current signal based on the low-frequency part of the first envelope signal, and the high-frequency switching power supply circuit can output a stepped voltage signal composed of a high-frequency direct current signal based on the first envelope signal or the high-frequency part of the first envelope signal, so that the voltage signal obtained by superimposing the voltage signals processed by the two circuits can achieve the effect of tracking the first envelope signal.

[0190] The simulation circuit structure and simulation results of the circuit of the embodiment are shown in ​ and ​ The voltage signals output by the first high-frequency voltage generation circuit and the switching power supply circuit are shown in ​ , and the voltage signal obtained by superimposing the voltage signals output by the two circuits, that is, the first voltage signal output by the first output end OUT1 of the radio frequency power supply, is shown in ​ .

[0191] When the first high-frequency voltage generation circuit is implemented by the multi-voltage selection circuit, the circuit connection relationship between the controller, the switching power supply circuit, the first high-frequency voltage generation circuit, and the first output end OUT1 of the radio frequency power supply is shown in ​ .

[0192] As shown in ​ , the switching power supply circuit can include a first switching power supply sub-circuit and a second switching power supply sub-circuit, and the first high-frequency voltage generation circuit includes a multi-level selection circuit; wherein

[0193] The output end of the multi-level selection circuit can be coupled to the first output end OUT1 of the radio frequency power supply as the output end of the first high-frequency voltage generation circuit;

[0194] The high-level output end of the first switching power supply sub-circuit is coupled to the high-level input end of the multi-level selection circuit, and the low-level output end is coupled to the low-level input end of the multi-level selection circuit;

[0195] The high-level output end of the second switching power supply sub-circuit is coupled to the low-level output end of the first switching power supply sub-circuit, that is, coupled to the low-level input end of the multi-level selection circuit; and the low-level output end of the second switching power supply sub-circuit is grounded;

[0196] The control ends of the first switching power supply sub-circuit, the second switching power supply sub-circuit, and the multi-level selection circuit are respectively coupled to the controller.

[0197] In some embodiments, the second switching power supply sub-circuit described above can also be combined with the multi-voltage selection circuit as a first high-frequency voltage generation circuit, and the embodiments of this application do not impose any limitations.

[0198] In this embodiment, the high-level output terminal of the first switching power supply sub-circuit can be considered as the output terminal of the switching power supply circuit, and coupled to the first output terminal OUT1 of the RF power supply through a multi-level selection circuit.

[0199] The following are ​ The working principle of the circuit structure shown is illustrated by example.

[0200] ​ In the RF power supply shown, the input voltage received by the multi-level selection circuit (the voltage between the high and low level input terminals) is the output voltage of the first switching power supply sub-circuit. The high-level output terminal of the second switching power supply sub-circuit pulls up the low-level output terminal of the first switching power supply sub-circuit (i.e., the voltage at the low-level input terminal of the multi-level selection circuit). In other words, the low-level output terminal of the first switching power supply sub-circuit is equal to the high-level output terminal of the second switching power supply sub-circuit. Assuming that in one control cycle, the output voltage of the first switching power supply sub-circuit is V1 and the output voltage of the second switching power supply sub-circuit is V2, then the output voltage of the multi-level selection circuit is between V1 and V2.

[0201] like ​ The diagram shows the equivalent circuit schematic of the first switching power supply sub-circuit, the second switching power supply sub-circuit, and the multi-level selection circuit. For the specific implementation structure, please refer to [reference needed]. ​ That will not be elaborated here. ​ Taking a multi-level selection circuit as an example, which can output four different levels.

[0202] like ​ As shown, assume that at a certain moment the output voltage of the second switching power supply sub-circuit is V0, and the output voltage of the first switching power supply sub-circuit is 3V. ​ If the parameters of capacitors C11, C12, and C13 are the same, then the output voltage of the multi-level selection circuit can be: V0, V0+1V, V0+2V, V0+3V.

[0203] ​ Figure 23 is a schematic diagram illustrating the principle of the circuit connection relationship. Taking the control period as a time slot as an example, in one time slot, the DC voltage signal can be output through the first switching power supply sub-circuit and the second switching power supply sub-circuit, while the stepped high-frequency voltage signal shown in ①②③④ is output through the multi-level selection circuit. Thus, the superposition signal of the voltage signals output by the two circuits corresponds to the first envelope signal of the first PA.

[0204] It should be noted that in other embodiments, the positions of the switching power supply circuit and the first high-frequency voltage generating circuit can be interchanged, as long as the superposition of the output voltages of the two circuits can be achieved, which will not be listed one by one here.

[0205] In this implementation, the high-frequency part and the low-frequency part of the first envelope signal can be split by the controller, the low-frequency part is processed by the switching power supply circuit, and the high-frequency part is processed by the first high-frequency voltage generating circuit, so that the voltage values of the voltage signals processed by the two circuits are reduced.

[0206] ​ The simulation schematic diagram of the circuit structure is shown in, for example ​ At this time, the first voltage signal output by the first output end OUT1 of the radio frequency power supply is, for example ​ indicated by the middle red stepped line.

[0207] When the first high-frequency voltage generating circuit is implemented by a multi-voltage selection circuit, the circuit connection relationship between the above-mentioned switching power supply circuit, the first high-frequency voltage generating circuit and the first output end OUT1 of the radio frequency power supply is, for example ​ indicated.

[0208] ​ In the radio frequency power supply shown, the switching power supply circuit includes three switching power supply sub-circuits, and the first high-frequency voltage generating circuit includes two multi-level selection circuits. Specifically, the radio frequency power supply includes:

[0209] The high-level output end of the third switching power supply sub-circuit is coupled to the high-level input end of the first multi-level selection circuit, and the low-level output end is coupled to

[0210] The low-level input end of the first multi-level selection circuit; the output end of the first multi-level selection circuit is coupled to the first output end OUT1 of the radio frequency power supply;

[0211] The low-level output end of the third switching power supply sub-circuit is coupled to the high-level output end of the fourth switching power supply sub-circuit;

[0212] The low-level output end of the fourth switching power supply sub-circuit is coupled to the output end of the second multi-level selection circuit;

[0213] The high-level output end of the fifth switching power supply sub-circuit is coupled to the high-level input end of the second multi-level selection circuit, and the low-level output end is grounded;

[0214] The low-level input end of the second multi-level selection circuit is grounded;

[0215] The control ends of the three switching power supply sub-circuits and the two multi-level selection circuits are respectively coupled to the controller.

[0216] In this circuit, the second multi-level selection circuit can output multiple voltages based on the output voltage of the fifth switching power supply sub-circuit. The specific output voltage can be controlled by the controller. The voltage output by the second multi-level selection circuit can pull up the voltage of the low-level output terminal of the fourth switching power supply sub-circuit, thereby pulling up the voltage of the high-level output terminal of the fourth switching power supply sub-circuit. Specifically, the voltage of the high-level output terminal of the fourth switching power supply sub-circuit is the voltage obtained by superimposing the output voltage of the second multi-level selection circuit and the output voltage of the fourth switching power supply sub-circuit.

[0217] The working principles of the fourth switching power supply sub-circuit, the third switching power supply sub-circuit, and the first multi-level selection circuit can be found in [reference]. ​ The explanations in the text will not be repeated here.

[0218] Understandable ​ In the RF power supply shown, assuming the output voltage of the third switching power supply sub-circuit is V3, the output voltage of the fourth switching power supply sub-circuit is V4, and the output voltage of the fifth switching power supply sub-circuit is V5, the voltage signal output by the first output terminal OUT1 can vary in a stepwise manner between V4 and V3+V4+V5. The specific output voltage signal depends on the voltage values ​​that can be output by the two multi-level selection circuits and the control of the controller.

[0219] ​ It shows ​ The diagram shows the equivalent circuit structure of the RF power supply. For its specific implementation structure, please refer to... ​ The circuit structures of the switching power supply circuit, high-frequency switching power supply circuit, and multi-level selection circuit shown are not described in detail here.

[0220] ​ Figure 27 is a schematic diagram illustrating the circuit connection relationship. In this circuit, the DC voltage signal of each time slot can be output through the switching power supply circuit, while the stepped high-frequency voltage signal shown in ①②③④ is output through the first high-frequency voltage generation circuit. Thus, the superposition of the voltage signals output by the two circuits corresponds to the first envelope signal of the first PA.

[0221] The simulation schematic diagram of the circuit structure shown in Figure 27 is as follows: ​ As shown, at this time, the first voltage signal output by the first output terminal OUT1 of the RF power supply is, for example... ​ As shown by the pink stepped lines in the middle.

[0222] As can be seen from the above embodiments, in the RF power supply provided in this application embodiment, the switching power supply circuit can be shared by multiple high-frequency voltage generation circuits. Therefore, the switching power supply circuit can supply power to multiple PAs, thereby forming the concept of a power resource pool and reducing the cost of the multi-PA power supply system solution.

[0223] In some embodiments, for example ​ As shown, the switching power supply circuit and the plurality of high-frequency voltage generation circuits can be integrated as a radio frequency power supply for powering the plurality of PAs.

[0224] In other embodiments, as shown ​ The switching power supply circuit and the high-frequency voltage generation circuit can be split apart; the switching power supply circuit can be split apart alone and can be used as a conventional switching power supply or as a power supply for providing the DC part in the AET and the DET; and the high-frequency voltage generation circuit can be integrated with the corresponding PA to form a module.

[0225] For example, in some embodiments, considering that wideband requirements mostly occur in systems operating in TDD mode, as shown ​ The bias voltage generation circuit is mainly used in cooperation with the TDD PA to improve the efficiency of the TDD system, and thus can be integrated with the TDD PA to form a TDD PA chip

[0226] For example, in some embodiments, considering that FDD mode systems have relatively high noise requirements, as shown ​ The LA circuit is mainly used in cooperation with the FDD PA, and is integrated with the FDD PA to obtain an FDD PA chip.

[0227] For example, in some embodiments, as shown ​ The switching power supply circuit and the high-frequency voltage generation circuit can be split apart, and the switching power supply circuit is integrated into one chip while powering the TDD PA chip and the FDD PA chip.

[0228] For example, in some embodiments, as shown ​ The switching power supply circuit and the high-frequency voltage generation circuit can be split apart, and the switching power supply circuit is integrated into one chip while powering the TDD PA chip and the FDD PA chip, and can also be used as a conventional switching power supply to power the RF PA in cooperation with the LA circuit or the bias voltage generation circuit.

[0229] For example, in some embodiments, as shown ​ The switching power supply circuit and the high-frequency voltage generation circuit can be split apart, and the switching power supply circuit is integrated into one chip to power a plurality of TDD PA chips.

[0230] For example, in some embodiments, as shown ​ The switching power supply circuit and the high-frequency voltage generation circuit can be split apart, and the switching power supply circuit is integrated into one chip to power a plurality of FDD PA chips.

[0231] The above-mentioned radio frequency power supply provided by the embodiment of the present application can combine the LA circuit which is sensitive to the parasitic with the FDD PA, thereby effectively reducing the influence of the parasitic parameter on the performance of the power supply and improving the performance of the radio frequency power supply.

[0232] The radio frequency power supply of the embodiment of the present application controls the voltage signals output by the switching power supply circuit and the LA circuit according to the low-frequency and high-frequency characteristics of the first envelope signal by the controller, which is a feedforward control mode, can avoid the lag effect introduced by the feedback control loop, and is beneficial to improving the performance and efficiency of the radio frequency power supply; moreover, the feedforward control mode is adopted to control the switching power supply circuit and the LA circuit, which can simplify the hardware design;

[0233] The switching power supply circuit and the LA circuit can adopt different chip technologies, which can reduce the implementation cost of the radio frequency power supply while taking into account the performance of the radio frequency unit;

[0234] Compatible with existing platforms, for example, the above-mentioned switching power supply circuit can be controlled by APT or other modes (such as SPT, etc.);

[0235] The switching power supply circuit for generating low-frequency direct-current voltage can follow the existing APT Buck-Boost power supply or other more advanced switching power supplies such as SPT power supply;

[0236] The LA circuit and the switching power supply can maintain different technical evolution paths.

[0237] The above-mentioned radio frequency power supply provided by the embodiment of the present application can combine the bias voltage generation circuit which is sensitive to the parasitic with the FDD PA, thereby effectively reducing the influence of the parasitic parameter on the performance of the power supply and improving the performance of the radio frequency power supply.

[0238] The radio frequency power supply of the embodiment of the present application controls the voltage signals output by the switching power supply circuit and the bias voltage generation circuit according to the low-frequency and high-frequency characteristics of the first envelope signal by the controller, which is a feedforward control mode, can avoid the lag effect introduced by the feedback control loop, and is beneficial to improving the performance and efficiency of the radio frequency power supply; moreover, the feedforward control mode is adopted to control the switching power supply circuit and the bias voltage generation circuit, which can simplify the hardware design;

[0239] The switching power supply circuit and the bias voltage generation circuit can adopt different chip technologies, which can reduce the implementation cost of the radio frequency power supply while taking into account the performance of the radio frequency unit;

[0240] Compatible with existing platforms, for example, the above-mentioned switching power supply circuit can be controlled by APT or other modes (such as SPT, etc.);

[0241] The switching power supply circuit for generating low-frequency direct-current voltage can follow the existing APT Buck-Boost power supply or other more advanced switching power supplies such as SPT power supply;

[0242] The bias voltage generation circuit and the switching power supply can maintain different technical evolution paths.

[0243] The electronic device provided by the embodiment of the present application comprises the radio frequency power supply shown in the above embodiment.

[0244] The chip provided by the embodiment of the present application comprises any one of the chips provided by the above embodiments.

[0245] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and when the computer program is run on a computer, the computer program enables the computer to execute the method provided by the embodiment of the present application.

[0246] The embodiment of the present application further provides a computer program product, which comprises a computer program, and when the computer program is run on a computer, the computer program enables the computer to execute the method provided by the embodiment of the present application.

[0247] The coupling in the embodiment of the present application can be direct connection, indirect connection through devices (for example, capacitors, resistors or inductors) or circuits, or indirect coupling connection, and the embodiment of the present application does not make any limitation. The indirect coupling connection refers to the interaction between two devices through electromagnetic field or electromagnetic wave transmission, for example, the interaction between the transformer and the inductive coupler in the circuit is indirect coupling.

[0248] In the embodiment of the present application, "at least one" refers to one or more, and "multiple" refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent the cases of A alone, A and B together, and B alone. Wherein A and B can be singular or plural. The character " / " generally represents an "or" relationship between the front and rear associated objects. "At least one of the following" and similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b and c can represent: a, b, c, a and b, a and c, b and c, or a and b and c, wherein a, b and c can be single or multiple.

[0249] Those skilled in the art can realize that the units and algorithm steps described in the embodiments disclosed in the present application can be realized by electronic hardware, computer software and combination of electronic hardware and computer software. Whether the functions are realized by hardware or software depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0250] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0251] In several embodiments provided in the present application, any function, if realized in the form of a software function unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part of the technical solutions that make contributions to the prior art or the part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The foregoing storage medium includes a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0252] The above is only a specific implementation of the present application, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A radio frequency power supply characterized by, The application relates to a radio frequency power supply circuit, which comprises the following parts: a switching power supply circuit, a first high-frequency voltage generating circuit and a second high-frequency voltage generating circuit; a first output end of the switching power supply circuit is coupled with a first output end of the radio frequency power supply, and a first target voltage signal is output to the first output end of the radio frequency power supply; an output end of the first high-frequency voltage generating circuit is coupled with the first output end of the radio frequency power supply, and a second target voltage signal is output to the first output end of the radio frequency power supply; the first output end of the radio frequency power supply is used for supplying power to a first PA, and a first voltage signal obtained by superimposing the first target voltage signal and the second target voltage signal is output to the first PA; the first target voltage signal and the second target voltage signal are determined according to a first envelope signal corresponding to the first PA; a second output end of the switching power supply circuit is coupled with a second output end of the radio frequency power supply, and a third target voltage signal is output to the second output end of the radio frequency power supply; a voltage output end of the second high-frequency voltage generating circuit is coupled with the second output end of the radio frequency power supply, and a fourth target voltage signal is output to the second output end of the radio frequency power supply; the second output end of the radio frequency power supply is used for supplying power to a second PA, and a second voltage signal obtained by superimposing the third target voltage signal and the fourth target voltage signal is output to the second PA; the third target voltage signal and the fourth target voltage signal are determined according to a second envelope signal corresponding to the second PA.

2. The radio frequency power supply of claim 1, wherein, The application further comprises: a controller; the controller is coupled with the switching power supply circuit and the first high-frequency voltage generating circuit respectively, and is used for controlling the switching power supply circuit to output the first target voltage signal according to a low-frequency signal of the first envelope signal, and controlling the first high-frequency voltage generating circuit to output the second target voltage signal according to the first envelope signal or a high-frequency signal of the first envelope signal; and / or, the controller is coupled with the second high-frequency voltage generating circuit, and is used for controlling the switching power supply circuit to output the third target voltage signal according to a low-frequency signal of the second envelope signal, and controlling the second high-frequency voltage generating circuit to output the fourth target voltage signal according to the second envelope signal or a high-frequency signal of the second envelope signal.

3. The radio frequency power source of claim 1 or 2, wherein, The first high-frequency voltage generating circuit is an LA circuit or a bias voltage generating circuit.

4. The radio frequency power supply of claim 3, wherein, The bias voltage generating circuit is specifically a multi-voltage selection circuit or a high-frequency switching power supply circuit.

5. The radio frequency power supply of claim 3, wherein, When the first high-frequency voltage generating circuit is an LA circuit, the first output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply, and comprises the following parts: the first output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply through a first inductor; or the first output end of the switching power supply circuit is coupled with the first output end of the radio frequency power supply through a second inductor and a third inductor connected in series, and the coupling ends of the second inductor and the third inductor are connected to the ground through a first capacitor.

6. The radio frequency power supply of claim 5, wherein, The first high-frequency voltage generating circuit comprises: An output terminal of the linear amplifier is coupled to an output terminal of the first high-frequency voltage generating circuit through a second capacitor; an input terminal of the linear amplifier is used as an input terminal of the first high-frequency voltage generating circuit, and is coupled to the controller.

7. The radio frequency power supply of claim 6, wherein, The first high-frequency voltage generating circuit further comprises: An output terminal of the first high-frequency voltage generating circuit is coupled to an input terminal of the linear amplifier; or, An output terminal of the linear amplifier is coupled to an input terminal of the linear amplifier.

8. The radio frequency power supply of claim 4, wherein, The first high-frequency voltage generating circuit is a high-frequency switching power supply circuit; A first output terminal of the switching power supply circuit is coupled to a first output terminal of the radio frequency power supply, and comprises: A high-level output terminal of the switching power supply circuit is coupled to the first output terminal of the radio frequency power supply; An output terminal of the first high-frequency voltage generating circuit is coupled to the first output terminal of the radio frequency power supply, and comprises: A high-level output terminal of the first high-frequency voltage generating circuit is coupled to a low-level output terminal of the switching power supply.

9. The radio frequency power supply of claim 4, wherein, The first high-frequency voltage generating circuit is a multi-level selection circuit; the switching power supply circuit comprises a first switching power supply sub-circuit and a second switching power supply sub-circuit; a high-level output terminal of the first switching power supply sub-circuit is used as a first output terminal of the switching power supply circuit; The radio frequency power supply further comprises: A low-level output terminal of the first switching power supply sub-circuit is coupled to a high-level output terminal of the second switching power supply sub-circuit and a low-level voltage input terminal of the multi-level selection circuit; a low-level output terminal of the second switching power supply sub-circuit is grounded; A first output terminal of the switching power supply circuit is coupled to a first output terminal of the radio frequency power supply, and comprises: A high-level output terminal of the first switching power supply sub-circuit is coupled to a high-level input terminal of the multi-level selection circuit.

10. The radio frequency power supply of claim 4, wherein, The first high-frequency voltage generating circuit comprises a first multi-level selection sub-circuit and a second multi-level selection sub-circuit; an output terminal of the first multi-level selection circuit is used as an output terminal of the first high-frequency voltage generating circuit; The switching power supply circuit comprises a third switching power supply sub-circuit, a fourth switching power supply sub-circuit and a fifth switching power supply sub-circuit; a high-level output terminal of the third switching power supply sub-circuit is used as a first output terminal of the switching power supply circuit; The radio frequency power supply further comprises: A low-level output terminal of the third switching power supply sub-circuit is coupled to a high-level output terminal of the fourth switching power supply sub-circuit and a low-level input terminal of the first multi-level selection sub-circuit; A low-level output terminal of the fourth switching power supply sub-circuit is coupled to a high-level output terminal of the second multi-level selection sub-circuit; a low-level input terminal of the second multi-level selection sub-circuit is grounded; a high-level output terminal of the fifth switching power supply sub-circuit is coupled to a high-level input terminal of the second multi-level selection sub-circuit, and a low-level output terminal is grounded; A first output terminal of the switching power supply circuit is coupled to a first output terminal of the radio frequency power supply, and comprises: A high-level output terminal of the third switching power supply sub-circuit is coupled to a high-level input terminal of the first multi-level selection sub-circuit.

11. The radio frequency power source of any of claims 1 to 10, wherein, The first high-frequency voltage generating circuit is integrated with a corresponding PA to form a PA module.

12. The radio frequency power supply of claim 11, wherein, When the first high-frequency voltage generating circuit is implemented by the LA circuit, the PA corresponding to the first high-frequency voltage generating circuit is a PA supporting FDD; or When the first high-frequency voltage generating circuit is implemented by the bias voltage generating circuit, the PA corresponding to the first high-frequency voltage generating circuit is a PA supporting TDD.

13. An electronic device, comprising: A radio frequency power supply comprising the PA of any one of claims 1 to 12.

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