US-20260128760-A1 - RADIO FREQUENCY CIRCUIT AND ELECTRONIC DEVICE

Abstract

This application discloses a radio frequency circuit and an electronic device. The radio frequency circuit includes a radio frequency integrated component and a controller. The radio frequency integrated component includes a first radio frequency port, a second radio frequency port, a third radio frequency port, two antenna ports, two single-pole multi-throw switches, and two filtering components. The controller is configured to control the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or control the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located.

Inventors

• Qiang Huo
• Tao Sun
• HAIGUANG ZHAO

Assignees

• HONOR DEVICE CO., LTD.

Dates

Publication Date

20260507

Application Date

20251222

Priority Date

20230710

Claims (20)

1. 1 . A radio frequency circuit, comprising: a radio frequency integrated component and a controller, wherein the radio frequency integrated component comprises a first antenna port, a second antenna port, a first single-pole multi-throw switch, a second single-pole multi-throw switch, a first filtering component, a second filtering component, a first radio frequency port, a second radio frequency port, and a third radio frequency port; the first antenna port is configured to connect to an antenna, and the first antenna port is connected to a common terminal of the first single-pole multi-throw switch; a first active terminal of the first single-pole multi-throw switch is connected to the first radio frequency port by using the first filtering component, and a second active terminal of the first single-pole multi-throw switch is connected to the second radio frequency port; the second radio frequency port is connected to the second antenna port, and the second antenna port is connected to a common terminal of the second single-pole multi-throw switch; a first active terminal of the second single-pole multi-throw switch is connected to the third radio frequency port by using the second filtering component; and the controller is configured to: control the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or control the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located.
2. 2 . The radio frequency circuit according to claim 1 , wherein the radio frequency integrated component comprises a first register, an input terminal of the first register is connected to the controller, and an output terminal of the first register is connected to a control terminal of the first single-pole multi-throw switch; and the controller is specifically configured to: send first configuration information and third configuration information to the first register, wherein the first configuration information is used to control the first active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch, and the third configuration information is used to control the second active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch.
3. 3 . The radio frequency circuit according to claim 1 , wherein the radio frequency integrated component comprises a second register, an input terminal of the second register is connected to the controller, and an output terminal of the second register is connected to a control terminal of the second single-pole multi-throw switch; and the controller is specifically configured to: send second configuration information to the second register, wherein the second configuration information is used to control the first active terminal of the second single-pole multi-throw switch to be connected to the common terminal of the second single-pole multi-throw switch.
4. 4 . The radio frequency circuit according to claim 1 , wherein the controller is configured to: control the first single-pole multi-throw switch to select the transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located, when communicating in a first band; or control the first single-pole multi-throw switch to select the transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select the transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located, when communicating in a second band.
5. 5 . The radio frequency circuit according to claim 4 , wherein a frequency of the first band is higher than a frequency of the second band.
6. 6 . The radio frequency circuit according to claim 1 , wherein the first filtering component or the second filtering component comprises at least one of a duplexer or a filter.
7. 7 . A method for selecting a transmission link, applied to a radio frequency circuit, wherein the radio frequency circuit comprises a radio frequency integrated component and a controller, wherein the radio frequency integrated component comprises a first antenna port, a second antenna port, a first single-pole multi-throw switch, a second single-pole multi-throw switch, a first filtering component, a second filtering component, a first radio frequency port, a second radio frequency port, and a third radio frequency port; the first antenna port is configured to connect to an antenna, and the first antenna port is connected to a common terminal of the first single-pole multi-throw switch; a first active terminal of the first single-pole multi-throw switch is connected to the first radio frequency port by using the first filtering component, and a second active terminal of the first single-pole multi-throw switch is connected to the second radio frequency port; the second radio frequency port is connected to the second antenna port, and the second antenna port is connected to a common terminal of the second single-pole multi-throw switch; a first active terminal of the second single-pole multi-throw switch is connected to the third radio frequency port by using the second filtering component; and the controller is configured to: control the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or control the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located; wherein the method comprises: controlling the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or controlling the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and controlling the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located.
8. 8 . The method according to claim 7 , wherein the radio frequency integrated component comprises a first register, an input terminal of the first register is connected to the controller, and an output terminal of the first register is connected to a control terminal of the first single-pole multi-throw switch; and the controller is specifically configured to: send first configuration information and third configuration information to the first register, wherein the first configuration information is used to control the first active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch, and the third configuration information is used to control the second active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch.
9. 9 . The method according to claim 7 , wherein the radio frequency integrated component comprises a second register, an input terminal of the second register is connected to the controller, and an output terminal of the second register is connected to a control terminal of the second single-pole multi-throw switch; and the controller is specifically configured to: send second configuration information to the second register, wherein the second configuration information is used to control the first active terminal of the second single-pole multi-throw switch to be connected to the common terminal of the second single-pole multi-throw switch.
10. 10 . The method according to claim 7 , wherein the radio frequency integrated component comprises a first register, an input terminal of the first register is connected to the controller, and an output terminal of the first register is connected to a control terminal of the first single-pole multi-throw switch; the controlling the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located comprises: sending first configuration information to the first register, wherein the first configuration information is used to control the first active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch.
11. 11 . The method according to claim 7 , wherein the radio frequency integrated component comprises a first register and a second register, an input terminal of the first register is connected to the controller, and an output terminal of the first register is connected to a control terminal of the first single-pole multi-throw switch, an input terminal of the second register is connected to the controller, and an output terminal of the second register is connected to a control terminal of the second single-pole multi-throw switch; the controlling the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and controlling the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located comprises: sending third configuration information to the first register, wherein the third configuration information is used to control the second active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch; and sending second configuration information to the second register, wherein the second configuration information is used to control the first active terminal of the second single-pole multi-throw switch to be connected to the common terminal of the second single-pole multi-throw switch.
12. 12 . The method according to claim 7 , wherein the controlling the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located comprises: controlling the first single-pole multi-throw switch to select the transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located, when communicating in a first band; or the controlling the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and controlling the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located comprises: controlling the first single-pole multi-throw switch to select the transmission link in which the second radio frequency port and the first antenna port are located, and controlling the second single-pole multi-throw switch to select the transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located, when communicating in a second band.
13. 13 . The method according to claim 12 , wherein a frequency of the first band is higher than a frequency of the second band.
14. 14 . The method according to claim 7 , wherein the first filtering component or the second filtering component comprises at least one of a duplexer or a filter.
15. 15 . An electronic device, comprising: an antenna and a radio frequency circuit, wherein the radio frequency circuit is connected to the antenna; wherein the radio frequency circuit comprises a radio frequency integrated component and a controller, wherein the radio frequency integrated component comprises a first antenna port, a second antenna port, a first single-pole multi-throw switch, a second single-pole multi-throw switch, a first filtering component, a second filtering component, a first radio frequency port, a second radio frequency port, and a third radio frequency port; the first antenna port is configured to connect to an antenna, and the first antenna port is connected to a common terminal of the first single-pole multi-throw switch; a first active terminal of the first single-pole multi-throw switch is connected to the first radio frequency port by using the first filtering component, and a second active terminal of the first single-pole multi-throw switch is connected to the second radio frequency port; the second radio frequency port is connected to the second antenna port, and the second antenna port is connected to a common terminal of the second single-pole multi-throw switch; a first active terminal of the second single-pole multi-throw switch is connected to the third radio frequency port by using the second filtering component; and the controller is configured to: control the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or control the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located.
16. 16 . The electronic device according to claim 15 , wherein the radio frequency integrated component comprises a first register, an input terminal of the first register is connected to the controller, and an output terminal of the first register is connected to a control terminal of the first single-pole multi-throw switch; and the controller is specifically configured to: send first configuration information and third configuration information to the first register, wherein the first configuration information is used to control the first active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch, and the third configuration information is used to control the second active terminal of the first single-pole multi-throw switch to be connected to the common terminal of the first single-pole multi-throw switch.
17. 17 . The electronic device according to claim 15 , wherein the radio frequency integrated component comprises a second register, an input terminal of the second register is connected to the controller, and an output terminal of the second register is connected to a control terminal of the second single-pole multi-throw switch; and the controller is specifically configured to: send second configuration information to the second register, wherein the second configuration information is used to control the first active terminal of the second single-pole multi-throw switch to be connected to the common terminal of the second single-pole multi-throw switch.
18. 18 . The electronic device according to claim 15 , wherein the controller is configured to: control the first single-pole multi-throw switch to select the transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located, when communicating in a first band; or control the first single-pole multi-throw switch to select the transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select the transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located, when communicating in a second band.
19. 19 . The electronic device according to claim 15 , wherein the first filtering component or the second filtering component comprises at least one of a duplexer or a filter.
20. 20 . The electronic device according to claim 15 , further comprising a memory, wherein the memory is configured to store instructions, and when the controller in the radio frequency circuit executes the instructions, a method for selecting the transmission link is performed; wherein the method is applied to the radio frequency circuit and the method comprises: controlling the first single-pole multi-throw switch to select the transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or controlling the first single-pole multi-throw switch to select the transmission link in which the second radio frequency port and the first antenna port are located, and controlling the second single-pole multi-throw switch to select the transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2024/079435, filed on Feb. 29, 2024, which claims priority to Chinese Patent Application No. 202310845979.1, filed on Jul. 10, 2023, both of which are incorporated herein by reference in their entireties. TECHNICAL FIELD Embodiments of this application relate to the field of wireless communication, and in particular, to a radio frequency circuit and an electronic device. BACKGROUND An antenna is installed in an electronic device having a cellular mobile communication function. Specifically, the antenna may be connected to a post-stage circuit by using a radio frequency integrated component. Generally, the radio frequency integrated component includes two antenna ports, and each of the two antenna ports is connected to one antenna. That is, when the radio frequency integrated component is used, two antennas need to be installed in the electronic device. In some electronic devices (for example, a smartwatch) with limited internal space, where two antennas cannot be installed, a path selector (for example, a single-pole double-throw switch) may be added between the radio frequency integrated component and the antenna. A common terminal of the path selector is connected to the antenna, and two active terminals of the path selector are respectively connected to the two antenna ports of the radio frequency integrated component. However, insertion loss of the path selector is relatively high, which degrades communication performance of each transmission link between a communication module and the antenna of the electronic device, resulting in poor communication performance of the electronic device. SUMMARY This application provides a radio frequency circuit and an electronic device. The radio frequency circuit can adapt to a single antenna when a radio frequency integrated component having dual antenna ports is used in the electronic device, and ensure communication performance of the electronic device to the maximum extent. To achieve the foregoing objective, the following technical solutions are used in this application. According to a first aspect, this application provides a radio frequency circuit, where the radio frequency circuit includes a radio frequency integrated component and a controller. The radio frequency integrated component may include a first radio frequency port, a second radio frequency port, a third radio frequency port, a first antenna port, a second antenna port, a first filtering component, a second filtering component, a first single-pole multi-throw switch, and a second single-pole multi-throw switch. The first antenna port is configured to connect to an antenna, and the first antenna port is connected to a common terminal of the first single-pole multi-throw switch; a first active terminal of the first single-pole multi-throw switch is connected to the first radio frequency port by using the first filtering component, and a second active terminal of the first single-pole multi-throw switch is connected to the second radio frequency port; the second radio frequency port is further connected to the second antenna port, and the second antenna port is connected to a common terminal of the second single-pole multi-throw switch; and a first active terminal of the second single-pole multi-throw switch is connected to the third radio frequency port by using the second filtering component. The controller is configured to control the first single-pole multi-throw switch to select a transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located; or control the first single-pole multi-throw switch to select a transmission link in which the second radio frequency port and the first antenna port are located, and control the second single-pole multi-throw switch to select a transmission link in which the third radio frequency port, the second filtering component, and the second antenna port are located. In the radio frequency circuit provided in this application, one antenna port of the radio frequency integrated component having dual antenna ports is connected to an antenna, and the other antenna port is connected to the second radio frequency port, so that the radio frequency integrated component can adapt to a single antenna, and no antenna port is left unconnected. When the controller controls the first single-pole multi-throw switch to select the transmission link in which the first radio frequency port, the first filtering component, and the first antenna port are located, insertion loss of a transmission link between the first radio frequency port and an antenna does not increase, and therefore communication performance of the transmission link between the first radio frequency port and the antenna is not degraded. When the controller controls the first single-pole multi-throw switch to select the transmission link in