CN114826295B - Radio frequency circuit and electronic equipment - Google Patents

Abstract

The application discloses a radio frequency circuit and electronic equipment, which realize the common-board power supply of an SA only scheme and an NSA scheme, greatly reduce the manpower development cost and the material cost and save the cost; in addition, for the NSA scheme, a second power supply module and a switch are adopted to replace two second power supply modules in the related technology, so that the cost is reduced better.

Description

Radio frequency circuit and electronic equipment

Technical Field

The present application relates to but is not limited to electronic technology, and in particular to a radio frequency circuit and electronic equipment.

Background technique

With the development of communication technology, the fifth generation mobile communication network (5G, 5th generation mobile networks) has gradually become popular. The current 5G networking methods are divided into two modes: standalone networking (SA, Standalone) and non-standalone networking (NSA, Non-Standalone). Among them, SA only requires 5G to connect to the base station alone; for NSA, 5G needs to rely on the core network of the fourth generation mobile communication network (4G, 4th generation mobile networks) for signaling connection to ensure that 4G and 5G can work at the same time.

In the related art, the power supply circuits of SA and NSA are different, that is, SA and NSA each have their own power supply device, which not only wastes a lot of manpower and material resources, but also is not conducive to cost saving.

Summary of the invention

The present application provides a radio frequency circuit and electronic equipment, which can realize SA networking and NSA networking on the same board, saving costs.

The embodiment of the present application provides a radio frequency circuit, including: an ultra-high frequency power amplifier UHB PA, a transmitting module, and a multi-mode multi-frequency power amplifier MMPA;

For the radio frequency circuit in the independent networking SA networking mode, it also includes: a first power supply module, a first short-circuit element, and a second short-circuit element; wherein,

The output end of is connected to the MMPA, is connected to the MMPA through the first short-circuit element, and is connected to the UHB PA through the second short-circuit element;

The first power supply module is used to supply power to the low frequency power amplifier LBPA and the intermediate frequency power amplifier MBPA in the MMPA, supply power to the high frequency power amplifier HBPA in the MMPA through the first short-circuit element, and supply power to the UHB PA through the second short-circuit element;

For the radio frequency circuit in the non-standalone networking NSA networking mode, it also includes: the first power supply module, the second power supply module, and the switch module; wherein,

The output end of the first power module is connected to the MMPA, or connected to the MMPA and connected to the MMPA through the switch module; the output end of the second power module is respectively connected to the UHB PA and the transmitting module and connected to the MMPA through the switch module, or respectively connected to the UHB PA and the transmitting module;

The switch module is used to switch according to the working state of the radio frequency circuit, and the working state is a first working state or a second working state;

The first power supply module is used to supply power to the LB PA and the MB PA in the MMPA in the first working state; supply power to the LB PA and the MB PA in the MMPA and supply power to the HB PA in the MMPA through the switch module in the second working state;

The second power supply module is used to supply power to the UHB PA, to the MB PA in the transmitting module, and to the HB PA in the MMPA through the switch module in the first working state; and to supply power to the UHB PA and to the MB PA in the transmitting module in the second working state.

The RF circuit provided in the embodiment of the present application realizes the common board power supply of the SA networking solution and the NSA networking solution, greatly reducing the manpower development cost and material cost, and saving costs; moreover, for the NSA solution, a second power supply module and a switch are used to replace the two second power supply modules in the related technology, which further reduces the cost.

An embodiment of the present application also provides an electronic device, comprising any of the above-mentioned radio frequency circuits.

Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

FIG. 1( a ) is a schematic diagram of a simple architecture of an embodiment of NSA networking in the related art;

FIG. 1( b ) is a schematic diagram of a simple architecture of an embodiment of SA networking in the related art;

FIG2 is a schematic diagram of the composition structure of the radio frequency circuit in an embodiment of the present application;

FIG3 is a schematic diagram of the power supply principle of the radio frequency circuit in the SA only networking according to an embodiment of the present application;

FIG4( a ) is a schematic diagram of the power supply principle of the radio frequency circuit in the first working state under NSA networking in an embodiment of the present application;

FIG4( b ) is a schematic diagram of the power supply principle of the RF circuit in the second working state under NSA networking in an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application more clear, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.

In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

It is understood that the terms "first" and "second" used in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

When used herein, the singular forms "a", "an", and "said/the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include/comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and/or" used in this specification includes any and all combinations of the relevant listed items.

The 5G NSA standard recently released by 3GPP adopts the dual connection (ENDC) mode of LTE and 5G New Radio (NR), with 4G as the anchor point of the control plane, 4G base station (eNB) as the master station, 5G base station (gNB) as the slave station, and the 4G core network is used. The simple architecture diagram of the NSA networking embodiment is shown in Figure 1(a), where the control plane (C-plane) is responsible for processing control signals, that is, managing call connections, and the user plane (U-plane) is responsible for processing voice signals, that is, managing call content. In NSA mode, only by connecting to the 4G network through the C-plane can you connect to the 5G network, that is, before the 4G network is connected, the 5G network cannot be connected alone. Among them, ENDC is the abbreviation of EUTRA NR Dual-Connectivity, E represents E-UTRA, which belongs to the air interface of 3GPP LTE and is the eighth version of 3GPP; N represents N Radio 5G; D represents LTE and 5G dual connection. ENDC can be understood as the mutual compatibility of 4G and 5G dual connections. Figure 1(b) shows a simple architecture diagram of an embodiment of SA networking. This pure 5G networking structure consists of 5G base stations + 5G core network + 5G terminals. Unlike NSA, SA directly connects to the 5G network through the C-plane.

As can be seen from Figure 1(a) and Figure 1(b), NSA does not have a 5G core network, while SA has a 5G core network. In NSA networking, 5G and 4G interoperate at the access network level, and the interconnection is complex; in SA networking, the 5G network is independent of the 4G network, and 5G and 4G only interoperate at the core network level, and the interconnection is simple. In order to support ENDC, it is necessary to use additional multi-mode multi-band power amplifier (MMPA, MultimodeMultiband Power Amplifier Module) devices.

For the pure SA (SA only) solution, it includes MMPA, ultra-high frequency power amplifier (UHB PA) and the first transmitting module (TxM1). In the SA only power supply solution, the power management chip (PMIC) provides voltage to all power amplifiers (PA), such as the low frequency power amplifier (LB PA), medium frequency power amplifier (MB PA) and high frequency power amplifier (HB PA) in the MMPA and the UHB PA, and the battery powers the Global System for Mobile Communications (GSM) LB PA and GSM HB PA in TxM1.

For the NSA solution, it includes MMPA, UHB PA, the second transmitting module (TxM2) and two average power tracking (APT) power supplies (such as APT Buck1 and APT Buck2). The APT power supply mode is a technology that automatically adjusts the operating voltage of the power amplifier in a step-by-step manner according to the output power of the power amplifier. MMPA can support the ENDC combination of LB+HB to achieve the dual-transmission function. In the NSA power supply solution, APT Buck1 powers the HB PA in the MMPA, APT Buck2 powers the UHB PA and the MB PA in TxM2, the PMIC powers the LB PA and MB PA in the MMPA, and the battery powers the GSM LB PA and GSM HB PA in TxM2.

In the related art, the SA only networking solution and the NSA networking solution adopt independent board power supply solutions, that is, SA and NSA are designed with separate boards, and SA and NSA each have their own power supply devices. In this way, there is not only a great waste of manpower and material resources, but also it is not conducive to cost saving. To this end, the embodiment of the present application provides a power supply device that can realize SA and NSA sharing a board and save costs.

FIG2 is a schematic diagram of the composition structure of the radio frequency circuit in the embodiment of the present application. As shown in FIG2 , the radio frequency circuit at least includes: UHB PA 11, a transmitting module 12, and an MMPA 13;

When the RF circuit is in the SA only networking mode, it may further include: a first power supply module 10, a first short-circuit element 40, and a second short-circuit element 50; wherein,

The output end of the first power module 10 is connected to the MMPA 13, connected to the MMPA 13 through the first short-circuit element 40, and connected to the UHB PA 11 through the second short-circuit element 50;

A first power supply module 10 is used to supply power to the LB PA and the MB PA in the MMPA 13, supply power to the HB PA in the MMPA 13 through a first short-circuit element 40, and supply power to the UHB PA 11 through a second short-circuit element 50;

When the radio frequency circuit is in the NSA networking mode, it may further include: a first power module 10, a second power module 20, and a switch module 30; wherein,

The output end of the first power module 10 is connected to the MMPA 13, or connected to the MMPA 13 and connected to the MMPA 13 through the switch module 30; the output end of the second power module 20 is respectively connected to the UHB PA 11 and the transmitting module 12 and connected to the MMPA 13 through the switch module 30, or respectively connected to the UHB PA 11 and the transmitting module 12;

A switch module 30, used for switching according to the working state of the radio frequency circuit, wherein the working state is a first working state or a second working state;

The first power supply module 10 is used to supply power to the LB PA and the MB PA in the MMPA 13 when the switch module 30 is in the first working state; supply power to the LB PA and the MB PA in the MMPA 13 and supply power to the HB PA in the MMPA 13 through the switch module 30 when the switch module 30 is in the second working state;

The second power supply module 20 is used to supply power to the UHB PA 11, to the MB PA in the transmitting module 12, and to the HB PA in the MMPA 13 through the switch module 30 when the switch module 30 is in the first working state; and to supply power to the UHB PA 11 and to the MB PA in the transmitting module 12 when the switch module 30 is in the second working state.

The RF circuit provided in the embodiment of the present application realizes the common board power supply of the SA only solution and the NSA solution, greatly reducing the manpower development cost and material cost, and saving costs; moreover, for the NSA solution, a second power supply module and a switch are used to replace the two second power supply modules in the related technology, which further reduces the cost.

The radio frequency circuit provided in the embodiment of the present application may further include a battery for supplying power to the GSM LBPA and the GSM HB PA in the transmitting module 12 .

In an exemplary embodiment, the first power module 10 may include, but is not limited to, a PMIC.

In an exemplary embodiment, the second power supply module 20 may be a dedicated power supply chip for PA, including but not limited to an APT power supply, an envelope tracking (ET) power supply, etc., to achieve a better power saving purpose.

In an exemplary embodiment, the switch module 30 may be a switch device such as an electronic switch or a field effect transistor that can realize circuit on-off control, for example, a single-pole double-throw switch SPDT.

In one embodiment, the switch module 30 and the second power module 20 are independent physical entities. In another embodiment, the switch module 30 can be integrated into the second power module 20, thus saving the cost of the switch module 30 and the debugging cost of the SPDT switch.

In an exemplary embodiment, the first port 111 of the SPDT switch is connected to the output end of the output voltage VCC of the second power module 20, and the second port 112 of the SPDT switch is connected to the output end of the output voltage VPA of the first power module 10. The output end of the output voltage VPA of the first power module 10 is connected to one end of the first short-circuit element 40, and the other end of the first short-circuit element 40 is connected to the common end 113 of the SPDT switch. The output end of the output voltage VPA of the first power module 10 is connected to one end of the second short-circuit element 50, and the other end of the second short-circuit element 50 is connected to the output end of the output voltage VCC of the second power module 20. In one embodiment, when the RF circuit is in the first working state, the common end 113 of the SPDT switch is connected to its first port 111, and when the RF circuit is in the second working state, the common end 113 of the SPDT switch is connected to its second port 112.

In an exemplary embodiment, the first short-circuit element 40 and the second short-circuit element 50 may include, but are not limited to, a 0 ohm (Ω) resistor, or a wire.

In actual applications, the transmitting module 12 can be installed with either TxM1 in the SA only solution in the related technology or TxM2 in the NSA solution in the related technology. It only requires that TxM1 and TxM2 be designed as pin to pin, that is, the functions and pins of the TxM1 device and the TxM2 device are fully compatible, and they can be directly replaced without changing the circuit.

The following is a detailed description of the working principle of the RF circuit provided in the embodiment of the present application, taking the UHB PA 11 including the n77 PA, the first power module 10 being the PMIC, the second power module 20 being the APT power supply, the switch module 30 being the SPDT, and the first short-circuit element 40 and the second short-circuit element 50 being the 0Ω resistor as an example. This is only an example and is not intended to limit the scope of protection of the present application.

FIG3 is a schematic diagram of the power supply principle of the RF circuit in the SA only networking in the embodiment of the present application. As shown in FIG3, in the present embodiment, the second power module 20 and the switch module 30 are removed, that is, the APT power supply and the SPDT switch are not installed, the first short-circuit element 40 and the second short-circuit element 50 are connected to a 0Ω resistor, and the TxM1 device is installed at the transmitting module 12 (TxM1 12 only includes GSM LB PA and GSM HB PA). As shown by the thick solid line in FIG3, the power interface provided by the PMIC of the platform provides a voltage VPA, which supplies power to the LB PA, MB PA and HB PA in the MMPA 13, and the n77 PA in the UHB PA 11, and the voltage VPH_PWR provided by the battery supplies power to the GSM LB PA and GSM HB PA in the TxM1 12.

FIG4(a) is a schematic diagram of the power supply principle of the RF circuit in the first working state under NSA networking in the embodiment of the present application. As shown in FIG4(a), in the present embodiment, the two 0Ω resistors at the reserved first short-circuit element 40 and the second short-circuit element 50 are removed, that is, the two 0Ω resistors are not installed, the second power module 20 and the switch module 30 are connected to the APT power chip and the SPDT switch, and the transmitting module 12 is installed with the TxM2 device (TxM1 12 includes MB PA, GSM LB PA and GSM HB PA). In the embodiment shown in FIG4(a), the SPDT switch is connected to the first port 111, and the RF circuit is in the first working state. As shown by the thick solid line in FIG4(a), the voltage VCC output by the APT power supply supplies power to the HB PA in the MMPA 13, the n77 PA in the UHB PA 11, and the MB PA in the TxM2. The power interface provided by the platform's PMIC 10 provides a voltage VPA, which supplies power to the LB PA and MB PA in the MMPA 13. The voltage VPA provided by the battery supplies power to the GSM LB PA and the GSM HB PA in the TxM1 12. In the embodiment shown in FIG4(a), the ENDC combinations that can be implemented include: LB+HB, LB+UHB, and MB+MB.

FIG4(b) is a schematic diagram of the power supply principle of the RF circuit in the second working state under NSA networking in the embodiment of the present application. As shown in FIG4(b), in the present embodiment, the two 0Ω resistors at the reserved first short-circuit element 40 and the second short-circuit element 50 are removed, that is, the two 0Ω resistors are not installed, the second power module 20 and the switch module 30 are connected to the APT power chip and the SPDT switch, and the transmitting module 12 is installed with the TxM2 device (TxM2 12 includes MB PA, GSM LB PA and GSM HB PA). In the embodiment shown in FIG4(b), the SPDT switch is connected to the first port 111, and the RF circuit is in the second working state. As shown by the thick solid line in FIG4(b), the voltage VCC output by the APT power supply supplies power to the n77PA in the UHB PA 11 and the MB PA in the TxM2 12, the power interface provided by the platform's PMIC 10 provides a voltage VPA, which supplies power to the HB PA, LB PA, and MB PA in the MMPA 13, and the voltage VPH_PWR provided by the battery supplies power to the GSM LB PA and the GSM HB PA in the TxM2 12. In the embodiment shown in FIG4(b), the ENDC combinations that can be implemented include MB+HB.

The embodiment of the present application also provides an electronic device, including the radio frequency circuit described in any of the above items. Exemplarily, the electronic device may include, but is not limited to: a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a personal digital assistant (PDA), a network attached storage (NAS Network Attached Storage), a personal computer (PC), a television, a teller machine or a self-service machine, etc., and the embodiment of the present application does not specifically limit it.

Although the embodiments disclosed in this application are as above, the contents described are only embodiments adopted to facilitate understanding of this application and are not intended to limit this application. Any technician in the field to which this application belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be based on the scope defined in the attached claims.

Claims (10)

1. A radio frequency circuit, characterized in that it comprises: an ultra-high frequency power amplifier UHB PA, a transmitting module, and a multi-mode multi-frequency power amplifier MMPA; For the radio frequency circuit in the independent networking SA networking mode, it also includes: a first power supply module, a first short-circuit element, and a second short-circuit element; wherein, The output end of the first power module is connected to the MMPA, connected to the MMPA through the first short-circuit element, and connected to the UHB PA through the second short-circuit element; The first power supply module is used to supply power to the low frequency power amplifier LB PA and the intermediate frequency power amplifier MBPA in the MMPA, supply power to the high frequency power amplifier HB PA in the MMPA through the first short-circuit element, and supply power to the UHB PA through the second short-circuit element; For the radio frequency circuit in the non-standalone networking NSA networking mode, it also includes: the first power supply module, the second power supply module, and the switch module; wherein, The output end of the first power module is connected to the MMPA, or connected to the MMPA and connected to the MMPA through the switch module; the output end of the second power module is respectively connected to the UHB PA and the transmitting module and connected to the MMPA through the switch module, or respectively connected to the UHB PA and the transmitting module; The switch module is used to switch according to the working state of the radio frequency circuit, and the working state is a first working state or a second working state; The first power supply module is used to supply power to the LB PA and the MBPA in the MMPA in the first working state; supply power to the LB PA and the MB PA in the MMPA and supply power to the HB PA in the MMPA through the switch module in the second working state; The second power supply module is used to supply power to the UHB PA, to the MB PA in the transmitting module, and to the HB PA in the MMPA through the switch module in the first working state; and to supply power to the UHB PA and to the MB PA in the transmitting module in the second working state. 2. The radio frequency circuit according to claim 1, further comprising a battery for supplying power to the Global System for Mobile Communications GSM LB PA and the GSM HB PA in the transmitting module. 3. The radio frequency circuit according to claim 1 or 2, wherein the first power module is a power management chip PMIC. 4. The radio frequency circuit according to claim 1 or 2, wherein the second power supply module is an average power tracking APT power supply or an envelope tracking ET power supply. 5. The radio frequency circuit according to claim 1, wherein the switch module and the second power supply module are independent physical entities; or The switch module is integrated in the second power module. 6. The radio frequency circuit according to claim 1 or 5, wherein the switch module is an electronic switch or a field effect transistor. 7. The radio frequency circuit according to claim 1 or 2, wherein the switch module is a single-pole double-throw switch SPDT; The first port of the SPDT switch is connected to the output end of the output voltage VCC of the second power module, and the second port of the SPDT switch is connected to the output end of the output voltage VPA of the first power module; An output end of the first power module output voltage VPA is connected to one end of the first short-circuit element, and the other end of the first short-circuit element is connected to the common end of the SPDT switch; An output end of the first power module output voltage VPA is connected to one end of the second short-circuit element, and the other end of the second short-circuit element is connected to an output end of the second power module output voltage VCC. 8. The radio frequency circuit according to claim 7, wherein in the first working state, the common end of the SPDT switch is connected to the first port thereof; In the second working state, the common end of the SPDT switch is connected to the second port thereof. 9 . The radio frequency circuit according to claim 1 , wherein the first short-circuit element and the second short-circuit element are 0-ohm resistors or conductive wires. 10. An electronic device, characterized by comprising the radio frequency circuit according to any one of claims 1 to 9.