CN114826295B

CN114826295B - Radio frequency circuit and electronic equipment

Info

Publication number: CN114826295B
Application number: CN202210432183.9A
Authority: CN
Inventors: 张亭; 仝林
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2024-05-10
Anticipated expiration: 2042-04-22
Also published as: CN114826295A; WO2023202121A1

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 not limited to, electronic technology, and in particular, to a radio frequency circuit and an electronic device.

Background

With the development of communication technology, the fifth generation mobile communication network (5G,5th generation mobile networks) has gradually begun to spread. The current 5G networking mode is divided into two modes, independent networking (SA, standalone) and Non-independent networking (NSA, non-Standalone). The SA only needs to be connected with the base station by a 5G single device; for NSA, the 5G needs to rely on the fourth generation mobile communication network (4G,4th generation mobile networks) core network for signaling connection to ensure that the 4G and the 5G can operate simultaneously.

In the related art, the power supply circuits of the SA and NSA are different, that is, the SA and NSA each have their own power supply device. Thus, not only is there a great waste of manpower and material resources, but also the cost is not favorably saved.

Disclosure of Invention

The application provides a radio frequency circuit and electronic equipment, which can realize the sharing of SA networking and NSA networking, and save the cost.

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

For the radio frequency circuit in the independent networking SA networking mode, the radio frequency circuit further comprises: the first power module, the first short-circuit element and the second short-circuit element; wherein,

Is connected to said MMPA via said first shorting element and to said UHB PA via said second shorting element;

the first power supply module is used for supplying power to a low-frequency power amplifier LB PA and an intermediate-frequency power amplifier MB PA in the MMPA, supplying power to a high-frequency power amplifier HB PA in the MMPA through the first short-circuit element, and supplying power to the UHB PA through the second short-circuit element;

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

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

The switch module is 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 is used for supplying power to the LB PA and the MB PA in the MMPA in the first working state; in the second operating state, powering the LB PA and the MB PA in the MMPA and powering the HB PA in the MMPA through the switch module;

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

The radio frequency circuit provided by the embodiment of the application realizes the common-board power supply of the SA networking scheme and the NSA networking scheme, greatly reduces the manpower development cost and the material cost, and saves 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.

The embodiment of the application also provides electronic equipment, which comprises the radio frequency circuit.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.

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

FIG. 1 (b) is a simplified architecture diagram of one embodiment of SA networking in the related art;

FIG. 2 is a schematic diagram of the structure of a RF circuit according to an embodiment of the present application;

fig. 3 is a schematic diagram of a power supply principle of a radio frequency circuit under SA only networking in an embodiment of the present application;

Fig. 4 (a) is a schematic diagram of a power supply principle of a radio frequency circuit in a first working state under NSA networking in an embodiment of the present application;

Fig. 4 (b) is a schematic diagram of a power supply principle of the radio frequency circuit in the second working state under NSA networking in the embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It is to be understood that the terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features being indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

The newly released 5G NSA standard of 3GPP adopts a mode of dual connection (ENDC) of LTE and 5G new air interface (NR), 4G is used as an anchor point of a control plane, 4G base station (eNB) is used as a master station, 5G base station (gNB) is used as a slave station, and a 4G core network is used, a simple architecture diagram of an embodiment of NSA networking is shown in fig. 1 (a), where a control plane (C-plane) is responsible for processing control signals, that is, managing call connection, and a user plane (U-plane) is responsible for processing voice signals, that is, managing call content. In NSA mode, the 5G network can be reconnected only by connecting the 4G network via the C-plane, i.e. the 5G network cannot be connected separately before the 4G network is connected. Wherein ENDC is an abbreviation of EUTRA NR Dual-Connectivity, E represents E-UTRA, belongs to an air interface of 3GPP LTE, is an eighth version of 3 GPP; n represents N Radio 5G; d represents LTE and 5G dual connectivity. ENDC can be understood as the mutual compatibility of 4G and 5G dual connectivity. Fig. 1 (b) shows a simple architecture diagram of an embodiment of SA networking, where the pure 5G networking structure consists of 5G base stations +5G core network +5G terminals. Unlike NSA, the SA is directly connected to the 5G network via the C-plane.

As can be seen from fig. 1 (a) and 1 (b), NSA has no 5G core network and SA has a 5G core network. Under NSA networking, 5G and 4G are communicated at the level of access network, and the interconnection is complex; under SA networking, the 5G network is independent of the 4G network, and the 5G and the 4G are only communicated at the level of a core network, so that the interconnection is simple. In order to support ENDC, the use of multimode, multi-frequency power amplifier (MMPA, multimode Multiband Power Amplifier Module) devices needs to be additionally added.

For a pure SA (SA only) scheme, an MMPA, an ultra high frequency power amplifier (UHB PA), and a first transmit module (TxM a) are included. In the SA only Power scheme, a Power management chip (PMIC, power MANAGEMENT IC) supplies voltage to all Power Amplifiers (PA), such as low frequency Power amplifier (LB PA), intermediate frequency Power amplifier (MB PA) and high frequency Power amplifier (HB PA) and UHB PA in MMPA, and a battery supplies Power to global system for mobile communications (GSM, global System for Mobile Communications) LB PA and GSM HB PA in TxM.

For NSA schemes, including MMPA, UHB PA, second transmit module (TxM 2), and two average power tracking (APT, average Power Tracking) power supplies (e.g., APT Buck1 and APT Buck 2), the APT supply mode is a technique of automatically adjusting the operating voltage of the power amplifier in steps according to the output power of the power amplifier. MMPA can support ENDC combination of LB+HB, and realize double-shot function. In the NSA power scheme, APT Buck1 powers HB PA in MMPA, APT Buck2 powers MB PA in UHB PA and TxM, PMIC powers LB PA and MB PA in MMPA, and battery powers GSM LB PA and GSM HB PA in TxM.

In the related art, the SA only networking scheme and the NSA networking scheme adopt independent split board power supply schemes, that is, the SA and the NSA are of split board design, and each of the SA and the NSA has its own power supply device. Thus, not only is there a great waste of manpower and material resources, but also the cost is not favorably saved. Therefore, the embodiment of the application provides the power supply device which can realize the common board of SA and NSA and save the cost.

Fig. 2 is a schematic diagram of a composition structure of a radio frequency circuit according to an embodiment of the present application, as shown in fig. 2, at least including: UHB PA 11, transmitting module 12, MMPA 13;

When the radio frequency circuit is in the SA only networking mode, the method may further include: a first power module 10, a first short-circuit element 40, a second short-circuit element 50; wherein,

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

A first power supply module 10 for supplying power to LB PA and MB PA in the MMPA 13, to HB PA in the MMPA 13 through the first shorting element 40, and to UHB PA 11 through the second shorting element 50;

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

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

The switch module 30 is configured to switch according to an operation state of the radio frequency circuit, where the operation state is a first operation state or a second operation state;

The first power module 10 is configured to supply power to the LB PA and the MB PA in the MMPA 13 when the switch module 30 is in the first operating state; in the second operating state of the switching module 30, power is supplied to the LB PA and MB PA in the MMPA 13 and power is supplied to the HB PA in the MMPA 13 through the switching module 30;

A second power module 20 for supplying power to the UHB PA 11, to the MB PA in the transmit 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 operating state; in the second operating state of the switching module 30, power is supplied to the UHB PA 11 and power is supplied to the MB PA in the transmitting module 12.

The radio frequency circuit provided by the embodiment of the application realizes the common-board power supply of the SA only scheme and the NSA scheme, greatly reduces the manpower development cost and the material cost, and saves 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.

The radio frequency circuit provided by the embodiment of the application can also comprise a battery for supplying power to the GSM LB PA and the GSM HB PA in the transmitting module 12.

In one illustrative example, the first power module 10 may include, but is not limited to, a PMIC.

In one illustrative example, the second power module 20 may power a dedicated power supply chip of the PA, including but not limited to, for example, an APT power supply, an envelope tracking (ET, envelope Tracking) power supply, etc., for better power saving purposes.

In an illustrative example, the switch module 30 may be an electronic switch, a field effect transistor, or the like capable of implementing on-off control of a circuit, such as a single pole double throw switch SPDT.

In one embodiment, the switch module 30 is a separate physical entity from the second power module 20. In another embodiment, the switch module 30 may be integrated into the second power module 20, thus saving both the cost of a switch module 30 and the cost of debugging the SPDT switch.

In one illustrative example, the first port 111 of the SPDT switch is connected to the output of the second power module 20 that outputs the voltage VCC, and the second port 112 of the SPDT switch is connected to the output of the first power module 10 that outputs the voltage VPA. The output terminal 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 terminal 113 of the SPDT switch. The output terminal of the first power module 10 outputting the voltage VPA is connected to one end of the second shorting element 50, and the other end of the second shorting element 50 is connected to the output terminal of the second power module 20 outputting the voltage VCC. In one embodiment, the common port 113 of the SPDT switch is in communication with the first port 111 when the rf circuit is in a first operating state, and the common port 113 of the SPDT switch is in communication with the second port 112 when the rf circuit is in a second operating state.

In one illustrative example, the first shorting element 40 and the second shorting element 50 may include, but are not limited to, a resistor such as 0 ohm (Ω), or a wire, etc.

In practical applications, the transmitting module 12 can be installed with TxM a in the SA only scheme in the related art or TxM a in the NSA scheme in the related art, and only the TxM and TxM are required to be designed to be fully compatible with the pin to pin, i.e. the TxM device and the TxM device, and the functions and pins of the devices can be directly replaced without changing the circuit.

The working principle of the radio frequency circuit provided by the embodiment of the present application will be described in detail below by taking the example that the UHB PA 11 includes n77 PA, the first power module 10 is a PMIC, the second power module 20 is an APT power, the switch module 30 is an SPDT, and the first shorting element 40 and the second shorting element 50 are 0 Ω resistors. This is by way of illustration only and is not intended to limit the scope of the application.

Fig. 3 is a schematic diagram of a power supply principle of the radio frequency circuit under SA only networking in the embodiment of the present application, as shown in fig. 3, in this 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 emission module 12 is connected to TxM devices (TxM includes only GSM LB PA and GSM HB PA). As shown by the thick solid line in fig. 3, the power interface provided by the PMIC of the platform provides a voltage VPA that powers LB PA, MB PA and HB PA in MMPA 13, and n77 PA in UHB PA 11, and the battery provided voltage vph_pwr powers GSM LB PA and GSM HB PA in TxM1 12.

Fig. 4 (a) is a schematic diagram of a power supply principle of a radio frequency circuit in a first working state under NSA networking in the embodiment of the present application, as shown in fig. 4 (a), in this embodiment, two 0 Ω resistors at the reserved first shorting element 40 and the reserved second shorting element 50 are removed, that is, two 0 Ω resistors are not installed, an APT power chip and an SPDT switch are connected to the second power module 20 and the switch module 30, and TxM devices (including MB PA, GSM LB PA and GSM HB PA in TxM 12) are installed to the transmitting module 12. In the embodiment shown in fig. 4 (a), the SPDT switch is connected to the first port 111, and the rf circuit is in the first operation state. As shown by the thick solid line in fig. 4 (a), the voltage VCC output by the APT power supply supplies HB PA in MMPA 13, n77 PA in UHB PA 11, and MB PA in TxM a, and the power interface provided by the PMIC 10 of the platform supplies voltage VPA that supplies LB PA and MB PA in MMPA 13, and the voltage vph_pwr supplied by the battery supplies GSM LB PA and GSM HB PA in TxM1 12. In the embodiment shown in fig. 4 (a), the ENDC combination that can be implemented includes: LB+HB, LB+UHB, MB+MB.

Fig. 4 (b) is a schematic diagram of a power supply principle of the radio frequency circuit in the second working state under NSA networking in the embodiment of the present application, as shown in fig. 4 (b), in this embodiment, two 0 Ω resistors at the reserved first shorting element 40 and the second shorting element 50 are removed, that is, two 0 Ω resistors are not installed, the second power module 20 and the switch module 30 are connected to an APT power chip and an SPDT switch, and the transmitting module 12 is installed with TxM devices (TxM includes MB PA, GSM LB PA and GSM HB PA). In the embodiment shown in fig. 4 (b), the SPDT switch is connected to the first port 111, and the rf circuit is in the second operation state. As shown by the thick solid line in fig. 4 (b), the voltage VCC of the APT power supply output supplies n77PA in UHB PA 11 and MB PA in TxM2, the power interface provided by PMIC 10 of the platform provides voltage VPA that supplies HB PA, LB PA and MB PA in MMPA 13, and the voltage vph_pwr provided by the battery supplies GSM LB PA and GSM HB PA in TxM2 12. In the embodiment shown in fig. 4 (b), the ENDC combination that can be implemented includes mb+hb.

The embodiment of the application also provides electronic equipment, which comprises the radio frequency circuit. By way of example, the electronic device may include, but is not limited to: a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted electronic device, a wearable device, an Ultra mobile Personal computer (UMPC, ultra-Mobile Personal Computer), a netbook or Personal digital assistant (PDA, personal DIGITAL ASSISTANT), a network attached memory (NAS Network Attached Storage), a Personal computer (PC, personal Computer), a television, a teller machine, a self-service machine, or the like, and embodiments of the present application are not particularly limited.

Although the embodiments of the present application are described above, the embodiments are only used for facilitating understanding of the present application, and are not intended to limit the present application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is to be determined by the appended claims.

Claims

1. A radio frequency circuit, comprising: the ultra-high frequency power amplifier UHB PA, the transmitting module and the multimode multi-frequency power amplifier MMPA;

The output end of the first power supply module is connected with the MMPA, the MMPA through the first short circuit element and the UHB PA through the second short circuit element;

2. The radio frequency circuit of claim 1, further comprising a battery for powering global system for mobile communications GSM LB PA and GSM HB PA in the transmit module.

3. The radio frequency circuit of claim 1 or 2, wherein the first power module is a power management chip PMIC.

4. The radio frequency circuit of 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 of claim 1, wherein the switch module and the second power module are separate physical entities; or alternatively

The switch module is integrated in the second power module.

6. The radio frequency circuit of claim 1 or 5, wherein the switching module is an electronic switch, a field effect transistor.

7. The radio frequency circuit of 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 with the output end of the output voltage VCC of the second power supply module, and the second port of the SPDT switch is connected with the output end of the output voltage VPA of the first power supply module;

The output end of the output voltage VPA of the first power supply module is connected with one end of the first short circuit element, and the other end of the first short circuit element is connected with the public end of the SPDT switch;

the output end of the first power module output voltage VPA is connected with one end of the second short circuit element, and the other end of the second short circuit element is connected with the output end of the second power module output voltage VCC.

8. The radio frequency circuit of claim 7, wherein in the first operating state, the common terminal of the SPDT switch is in communication with the first port thereof;

and in the second working state, the public end of the SPDT switch is communicated with the second port of the SPDT switch.

9. The radio frequency circuit of claim 1 or 2, wherein the first shorting element and the second shorting element are 0 ohm resistors, or wires.

10. An electronic device comprising a radio frequency circuit as claimed in any one of claims 1 to 9.